{"title":"Defender D4 Series Colson Casters","description":"\u003cp\u003eThe Colson Defender D4 Series features corrosion-resistant construction with sealed components, designed for food processing, pharmaceutical, and washdown environments.\u003c\/p\u003e","products":[{"product_id":"colson-casters-49mh42g-02","title":"4\" Stainless Steel Top Plate Caster with Performa Rubber (Flat\/Grey) Wheel - D4.04108.451 SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.451 SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid for a quiet, damp cart that needs a stable footprint and no bearing maintenance.\u003c\/p\u003e\n\u003cp\u003eThe Delrin plain bearing runs grease-free, resists the corrosion that water and cleaning chemicals cause, and stays quiet under the lighter loads it is meant for. It carries the grey flat-tread Performa rubber wheel, Colson's non-marking institutional rubber, which keeps the ride quiet and the floor unmarked while the flat profile puts more rubber down for steadier rolling. The stainless steel frame handles wet, chemical bays, and the rigid mount tracks straight at the back of the cart. Soft rubber keeps the load class modest, so this is the quiet, low-upkeep choice for clean, lightly loaded carts that benefit from a planted feel. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuiet, maintenance-free carts in damp clinical or food areas\u003c\/li\u003e\n\u003cli\u003eLighter-duty stainless rigs that should run grease-free\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners wanting a stable flat-tread footprint\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep the load in the Delrin and soft-rubber class and confirm the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the flat-grey Delrin swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mh42v-02\"\u003e49MH42V-02\u003c\/a\u003e up front for grease-free steering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Faster trips or tow lines? See the flat-grey precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mc42g-02\"\u003e49MC42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the round-tread Performa Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1h42g-02\"\u003e49M1H42G-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895187312859,"sku":"49MH42G-02","price":107.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.451_20SS.png?v=1653667927"},{"product_id":"colson-casters-49mc42gt-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Performa Rubber (Flat\/Conductive) Wheel - D4.04108.455 COND SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.455 COND SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid when a cart has to bleed off static electricity in an ESD-sensitive or flammable area.\u003c\/p\u003e\n\u003cp\u003eThe wheel is Colson Performa rubber in a conductive flat tread, loaded to carry static charge from the cart through the caster instead of letting it build up, which protects electronics on the deck and reduces spark risk around solvents or fine dust. The flat profile gives a stable footprint, and the soft rubber rolls quietly while staying easy on floors, though the conductive compound can leave a mark on a light finished surface. The stainless steel frame suits wash-down areas, and the pedestal precision ball bearing keeps it rolling smoothly. Soft rubber holds the load class modest, so this is a static-control caster first. Rigid means it tracks straight. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eESD-sensitive electronics carts that must drain static charge\u003c\/li\u003e\n\u003cli\u003eFlammable or solvent areas where spark risk needs reducing\u003c\/li\u003e\n\u003cli\u003eQuiet stable flat-tread corners that track straight under modest loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVerify the conductive resistance spec and that the full caster path to ground is conductive, plus the 5-5\/8-inch mount height, before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e matching conductive Defender D4 casters across all four corners so the whole cart stays grounded, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e No static concern, just a quiet non-marking wheel? See the grey flat-tread rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mc42g-02\"\u003e49MC42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the round-tread Performa precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1g42g-02\"\u003e49M1G42G-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895188000987,"sku":"49MC42GT-02","price":153.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.455_20COND_20SS.png?v=1653667931"},{"product_id":"colson-casters-49mc42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Performa Rubber (Flat\/Grey) Wheel - D4.04108.455 SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.455 SS\u003c\/h3\u003e\n\u003cp\u003ePut this 4-inch Defender D4 rigid on a quiet, finished-floor cart where a flat, stable footprint matters more than easy swiveling.\u003c\/p\u003e\n\u003cp\u003eThe wheel is Colson Performa soft rubber in a grey flat tread, the non-marking institutional rubber that runs quietly and cushions the ride, with a flat profile that puts more rubber on the floor for steadier rolling and better load spread than a round tread. The stainless steel frame handles corrosive, sprayed-down rooms, and the pedestal precision ball bearing keeps it rolling smoothly on faster, frequent trips and tow lines. Soft rubber keeps the load class modest, so this is a quiet, floor-friendly caster, not a heavy hauler. Rigid means it tracks straight at the back of the cart. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuiet finished-floor carts needing a stable flat-tread footprint\u003c\/li\u003e\n\u003cli\u003eStainless wash-down rigs that must stay non-marking and soft\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners on faster tow-line carts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep the load within the soft-rubber class and confirm the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e a matching Defender D4 swivel up front so the cart steers while this rigid tracks straight, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need to drain static in an ESD or flammable area? See the conductive flat-tread rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mc42gt-02\"\u003e49MC42GT-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the round-tread Performa precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1g42g-02\"\u003e49M1G42G-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895188263131,"sku":"49MC42G-02","price":119.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.455_20SS.png?v=1653667934"},{"product_id":"colson-casters-49mi42gt-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Performa Rubber (Flat\/Conductive) Wheel - D4.04108.459 COND SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04108.459 COND SS WB29\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid when a heavier cart has to drain static in an ESD-sensitive or flammable area and is moved slowly.\u003c\/p\u003e\n\u003cp\u003eThe roller bearing gives this the most load capacity of the three bearings offered, carrying weight toward the soft-rubber limit at a slow, controlled pace, while the conductive flat-tread Performa wheel carries static charge from the cart through the caster to ground rather than letting it build up. That protects electronics and reduces spark risk around solvents or fine dust. The flat profile gives a stable footprint, and the soft rubber rolls quietly and stays easy on floors, though the conductive compound can mark a light finished surface. The stainless steel frame suits wash-down service. Rigid means it tracks straight. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavier ESD-sensitive carts that must drain static at slow speed\u003c\/li\u003e\n\u003cli\u003eFlammable or solvent areas needing static control under load\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners with a stable conductive footprint\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVerify the conductive resistance spec and that the full caster path to ground is conductive, plus the 5-5\/8-inch mount height, before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e matching conductive Defender D4 casters on all four corners so the loaded cart stays grounded, including the conductive swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mi42vt-02\"\u003e49MI42VT-02\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e No static concern, just a quiet non-marking wheel? See the grey flat-tread roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mi42g-02\"\u003e49MI42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the precision-ball conductive rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mc42gt-02\"\u003e49MC42GT-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895188492507,"sku":"49MI42GT-02","price":146.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.459_20COND_20SS_20WB29.png?v=1653667936"},{"product_id":"colson-casters-49mi42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Performa Rubber (Flat\/Grey) Wheel - D4.04108.459 SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04108.459 SS WB29\u003c\/h3\u003e\n\u003cp\u003ePick this 4-inch Defender D4 rigid when a quiet, non-marking cart needs to carry near the top of the soft-rubber range, pushed slowly.\u003c\/p\u003e\n\u003cp\u003eThe roller bearing is the highest-capacity of the three bearings offered, so it lets the grey flat-tread Performa wheel work toward its load limit as long as travel stays slow and steady. Performa is Colson's quiet institutional rubber that protects finished floors and leaves no marks, and the flat profile puts more rubber on the ground for a stable, planted roll. The stainless steel frame handles corrosive, sprayed-down bays. Even with the roller bearing, soft rubber tops out below a hard poly wheel, so this is for noise-sensitive areas that want a bit more load, not for true heavy haulage. Rigid means it tracks straight. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuiet carts needing the top of the soft-rubber load range\u003c\/li\u003e\n\u003cli\u003eStainless wash-down rigs in noise-sensitive clinical areas\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners under slower, heavier pushing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the soft-rubber roller load class and the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the flat-grey roller swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mi42v-02\"\u003e49MI42V-02\u003c\/a\u003e up front so the cart steers under load.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need to drain static? See the conductive flat-tread roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mi42gt-02\"\u003e49MI42GT-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the grease-free flat-grey Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mh42g-02\"\u003e49MH42G-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895188590811,"sku":"49MI42G-02","price":113.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.459_20SS_20WB29.png?v=1653667939"},{"product_id":"colson-casters-49xh42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Maxim Nylon Glass Filled Wheel - D4.04108.531 SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.531 SS\u003c\/h3\u003e\n\u003cp\u003ePick this 4-inch Defender D4 rigid when a damp cart wants a strong chemical-resistant wheel on a bearing that needs no service.\u003c\/p\u003e\n\u003cp\u003eThe Delrin plain bearing runs grease-free and corrosion-proof, with nothing to wash out in a sprayed-down bay, and stays quiet under the lighter loads it is meant for, which keeps the working load below what the Maxim wheel alone could carry. That wheel is Maxim glass-filled nylon, Colson's glass-fiber-reinforced grade that resists chemicals and moisture and holds up under heavy point loads. The stainless steel frame suits wet, chemical areas, and the rigid mount tracks straight at the rear. Glass-filled nylon is hard with no cushioning and can scratch a soft floor, so this combines a tough wheel with low upkeep rather than a smooth ride. It serves from -20 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDamp chemical-area carts that should run grease-free\u003c\/li\u003e\n\u003cli\u003eSanitary, sprayed-down rigs needing a strong nylon wheel\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners on hard, durable flooring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMatch the load to the Delrin bearing class, confirm the floor suits a hard wheel, and check the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Maxim Delrin swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xh42v-02\"\u003e49XH42V-02\u003c\/a\u003e up front for grease-free steering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need faster roll or tow-line use? See the precision-ball Maxim rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xg42g-02\"\u003e49XG42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 treads and bearings.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895188754651,"sku":"49XH42G-02","price":123.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.531_20SS.png?v=1653667941"},{"product_id":"colson-casters-49g4h42g-02","title":"4\" Stainless Steel Top Plate Caster with White Nylon Wheel - D4.04108.531 WN SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.531 WN SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid when a damp, lighter-duty cart should have neither grease to wash out nor anything to corrode.\u003c\/p\u003e\n\u003cp\u003eThe Delrin plain bearing is fully maintenance-free, immune to the moisture and cleaning chemicals that wreck a greased bearing, and quiet under the lighter loads it is meant for. It carries the hard white nylon wheel, which resists chemicals and water, stays dimensionally stable when wet, and wipes down for sanitary use, all on a stainless steel frame for corrosion service. The rigid mount keeps the cart tracking straight at the rear. Nylon leaves no color mark but is a hard, unforgiving tread that can scuff a soft floor and gives no cushioning, and the wheel works from -20 to 180°F. This is the low-upkeep rigid for clean, wet, lightly loaded carts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLighter-duty wash-down carts that should run grease-free\u003c\/li\u003e\n\u003cli\u003eSanitary, damp areas where greased bearings fail\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners on chemical-service rigs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep the load in the Delrin class and check the floor suits a hard nylon tread before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the white-nylon Delrin swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4h42v-02\"\u003e49G4H42V-02\u003c\/a\u003e up front for grease-free steering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Faster or heavier duty? See the white-nylon precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4g42g-02\"\u003e49G4G42G-02\u003c\/a\u003e and roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4i42g-02\"\u003e49G4I42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the hi-temp Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g41h42g-02\"\u003e49G41H42G-02\u003c\/a\u003e for heat above 180°F, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895189246171,"sku":"49G4H42G-02","price":104.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.531_20WN_20SS.png?v=1653667947"},{"product_id":"colson-casters-49xg42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Maxim Nylon Glass Filled Wheel - D4.04108.535 SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.535 SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid when a cart carries heavy loads through a chemical or wash-down area and rolls at a fair clip.\u003c\/p\u003e\n\u003cp\u003eThe wheel is Maxim glass-filled nylon, Colson's glass-fiber-reinforced nylon grade built for high capacity, so it takes heavy loads for its size and shrugs off chemicals and moisture without absorbing water. The pedestal precision ball bearing keeps it rolling smoothly on faster, frequent trips and tow lines, and the stainless steel frame handles corrosive, sprayed-down bays. Glass-filled nylon is a hard wheel with no cushioning, so it passes floor shock straight through and can scratch a soft finished floor. This is a strength-and-capacity caster for hard surfaces, chosen for load and chemical resistance rather than a soft ride. Rigid means it tracks straight at the rear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy chemical-area carts on hard, durable flooring\u003c\/li\u003e\n\u003cli\u003eStainless wash-down rigs needing a high-capacity nylon wheel\u003c\/li\u003e\n\u003cli\u003eFaster tow-line back corners where load outranks cushioning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the load class, that the floor tolerates a hard nylon tread, and the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Maxim glass-filled nylon swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xg42v-02\"\u003e49XG42V-02\u003c\/a\u003e up front so the cart steers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Standard nylon capacity is enough? See the standard glass-filled nylon rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49r1g42g-02\"\u003e49R1G42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 treads and bearings.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895189704923,"sku":"49XG42G-02","price":139.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.535_20SS.png?v=1653667950"},{"product_id":"colson-casters-49g4g42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with White Nylon Wheel - D4.04108.535 WN SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.535 WN SS\u003c\/h3\u003e\n\u003cp\u003ePut this 4-inch Defender D4 rigid on the back of a chemical-area cart that gets washed often and needs a wheel that ignores moisture.\u003c\/p\u003e\n\u003cp\u003eThe white nylon wheel is hard, dense, and chemical resistant, it will not absorb water or swell the way some treads do, and it wipes clean for sanitary areas, all on a stainless steel frame that resists corrosion in wet bays. The pedestal precision ball bearing rolls smoothly and suits faster, frequent trips and tow lines. Nylon leaves no color mark, but it is a hard wheel with no give, so it transmits floor shock and its rigid tread can dent or scratch a soft finished floor. It works from -20 to 180°F, a lower ceiling than the hi-temp retort wheels in this family. Rigid means it tracks straight at the rear of the cart.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eChemical and sanitary carts that are washed down frequently\u003c\/li\u003e\n\u003cli\u003eStainless rigs in wet bays needing an easy-clean hard wheel\u003c\/li\u003e\n\u003cli\u003eFaster tow-line back corners on hard, durable flooring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm your floor can take a hard nylon tread and the 5-5\/8-inch mount height fits before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the white-nylon precision-ball swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4g42v-02\"\u003e49G4G42V-02\u003c\/a\u003e up front so the cart steers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need heat tolerance above 180°F? See the hi-temp retort rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g41g42g-02\"\u003e49G41G42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the white-nylon Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4h42g-02\"\u003e49G4H42G-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895189967067,"sku":"49G4G42G-02","price":116.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.535_20WN_20SS.png?v=1653667953"},{"product_id":"colson-casters-49xi42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Maxim Nylon Glass filled Wheel - D4.04108.539 SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04108.539 SS WB29\u003c\/h3\u003e\n\u003cp\u003eReach for this 4-inch Defender D4 rigid when a chemical-area cart is loaded to the limit and pushed slowly.\u003c\/p\u003e\n\u003cp\u003eThis is the highest-capacity build in the Maxim glass-filled nylon line: the roller bearing carries the most weight of the three bearings offered, suited to slow, sustained pushing, and the Maxim wheel matches it with glass-fiber reinforcement that takes heavy point loads while resisting chemicals and moisture. The stainless steel frame holds up in corrosive, sprayed-down bays, and the rigid mount keeps the load tracking straight at the rear. Glass-filled nylon is hard with no cushioning, so it transmits floor shock and can mark a soft surface, making this a pure strength-and-capacity caster for hard floors. It serves from -20 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum-load chemical-area carts pushed slowly down a line\u003c\/li\u003e\n\u003cli\u003eStainless transfer rigs at the top of the nylon capacity range\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners under the heaviest sustained loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the roller-bearing load class and that the floor accepts a hard nylon tread before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Maxim roller swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xi42v-02\"\u003e49XI42V-02\u003c\/a\u003e up front so the heavy cart steers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Lighter or faster duty? See the precision-ball Maxim rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xg42g-02\"\u003e49XG42G-02\u003c\/a\u003e and Delrin Maxim rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xh42g-02\"\u003e49XH42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 treads and bearings.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895190163675,"sku":"49XI42G-02","price":130.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.539_20SS_20WB29.png?v=1653667956"},{"product_id":"colson-casters-49g4i42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with White Nylon Wheel - D4.04108.539 WN SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04108.539 WN SS WB29\u003c\/h3\u003e\n\u003cp\u003ePick this 4-inch Defender D4 rigid when a wash-down cart carries real weight and is pushed slowly down the line.\u003c\/p\u003e\n\u003cp\u003eThe roller bearing handles the heaviest loads in this nylon group, as long as travel stays slow and steady, which fits a packed sanitary cart or a loaded transfer rack. It runs the hard white nylon wheel, chemical and moisture resistant, stable when wet, and easy to clean, on a stainless steel frame that holds up in corrosive, sprayed-down bays. The rigid mount keeps the load tracking straight at the rear of the cart. Nylon leaves no color mark, but the wheel is hard with no cushioning and can scratch a soft floor, and it works from -20 to 180°F rather than the hi-temp range. This is the heavy, low-speed nylon caster for clean, wet environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavily loaded sanitary carts pushed slowly down a line\u003c\/li\u003e\n\u003cli\u003eStainless transfer racks in corrosive, sprayed-down bays\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners under sustained heavy loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the roller-bearing load class and that the floor accepts a hard nylon tread before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the white-nylon roller swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4i42v-02\"\u003e49G4I42V-02\u003c\/a\u003e up front so the heavy cart steers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Lighter or faster duty? See the white-nylon precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4g42g-02\"\u003e49G4G42G-02\u003c\/a\u003e and Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4h42g-02\"\u003e49G4H42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the hi-temp roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g41i42g-02\"\u003e49G41I42G-02\u003c\/a\u003e for heat above 180°F, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895190294747,"sku":"49G4I42G-02","price":109.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.539_20WN_20SS_20WB29.png?v=1653667959"},{"product_id":"colson-casters-49m1h42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Performa Rubber (Round) Wheel - D4.04108.551 SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.551 SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid for a quiet, damp, lighter-duty cart that should need no maintenance at all.\u003c\/p\u003e\n\u003cp\u003eIt pairs the Delrin plain bearing, which is grease-free, corrosion-proof, and quiet under the lighter loads it is meant for, with Colson's Performa soft rubber wheel, the non-marking institutional tread that cushions the ride and protects finished floors. The combination is about as quiet and low-upkeep as a caster gets: nothing to grease out in a wash-down, nothing to corrode, and no floor marks. The stainless steel frame handles wet, chemical bays, and the rigid mount tracks straight at the rear of the cart. Soft rubber keeps the load class modest, so this suits clean, quiet, lightly loaded carts rather than heavy transport. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuiet, maintenance-free carts in damp clinical or food areas\u003c\/li\u003e\n\u003cli\u003eLighter-duty stainless rigs that should run grease-free\u003c\/li\u003e\n\u003cli\u003eStraight-tracking back corners where silence and floor care matter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep the load in the Delrin and soft-rubber class and confirm the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Performa Delrin swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1h42v-02\"\u003e49M1H42V-02\u003c\/a\u003e up front for grease-free steering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Faster trips or tow lines? See the Performa precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1g42g-02\"\u003e49M1G42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the Performa roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1i42g-02\"\u003e49M1I42G-02\u003c\/a\u003e for heavier slow loads, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895190393051,"sku":"49M1H42G-02","price":103.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.551_20SS.png?v=1653667961"},{"product_id":"colson-casters-49m1g42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Performa Rubber (Round) Wheel - D4.04108.555 SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.555 SS\u003c\/h3\u003e\n\u003cp\u003ePut this 4-inch Defender D4 rigid on the back of a quiet, finished-floor cart that still has to live in a wash-down area.\u003c\/p\u003e\n\u003cp\u003eThe wheel is Colson Performa soft rubber on a polyolefin core, the institutional standard for hospitals, labs, and food service because it runs quietly, cushions the ride, and leaves no marks on a finished floor. Its round tread profile rolls with low resistance and is easy on the surface. The stainless steel frame adds corrosion resistance for wet, sprayed-down rooms, and the pedestal precision ball bearing keeps it rolling smoothly at speed and on tow lines. Soft rubber carries less than a poly wheel, so this is a quiet, floor-friendly caster rather than a heavy hauler. Rigid means it tracks in a straight line. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuiet hospital, lab, and food-service carts on finished floors\u003c\/li\u003e\n\u003cli\u003eStainless wash-down rigs that must stay non-marking and soft\u003c\/li\u003e\n\u003cli\u003eStraight-tracking back corners on faster tow-line carts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep the load within the soft-rubber class and confirm the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Performa rubber precision-ball swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1g42v-02\"\u003e49M1G42V-02\u003c\/a\u003e up front so the cart steers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Want a grease-free bearing for damp duty? See the Performa Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1h42g-02\"\u003e49M1H42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the Performa roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1i42g-02\"\u003e49M1I42G-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895190458587,"sku":"49M1G42G-02","price":115.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.555_20SS.png?v=1653667964"},{"product_id":"colson-casters-49m1i42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Performa Rubber (Round) Wheel - D4.04108.559 SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04108.559 SS WB29\u003c\/h3\u003e\n\u003cp\u003ePick this 4-inch Defender D4 rigid when a quiet, floor-friendly cart needs to carry as much as soft rubber allows, pushed slowly.\u003c\/p\u003e\n\u003cp\u003eThe roller bearing is the highest-capacity of the three bearings offered here, so it lets the Performa rubber wheel carry toward the top of its range as long as travel stays slow and steady. Performa is Colson's quiet, non-marking institutional rubber that cushions the ride and protects finished floors, on a stainless steel frame for corrosive wash-down bays. Even with the roller bearing, soft rubber tops out below a hard poly wheel, so this is for noise-sensitive areas that still want a bit more load, not for true heavy haulage. The rigid mount tracks straight at the rear of the cart. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuiet carts that need the top of the soft-rubber load range\u003c\/li\u003e\n\u003cli\u003eStainless wash-down rigs in noise-sensitive clinical areas\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners under slower, heavier pushing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the soft-rubber roller load class and the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Performa roller swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1i42v-02\"\u003e49M1I42V-02\u003c\/a\u003e up front so the cart steers under load.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Lighter or faster duty? See the Performa precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1g42g-02\"\u003e49M1G42G-02\u003c\/a\u003e and Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1h42g-02\"\u003e49M1H42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 treads.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895190655195,"sku":"49M1I42G-02","price":108.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.559_20SS_20WB29.png?v=1653667967"},{"product_id":"colson-casters-49tg42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with High Impact Polymer Wheel - D4.04108.5PN SS","description":"\u003ch3\u003eAbout This Wheel - D4.04108.5PN SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid when a cart takes knocks and drops and a brittle hard wheel would crack.\u003c\/p\u003e\n\u003cp\u003eThe wheel is Colson's Commander HD high-impact polymer, a tough blue tread built to absorb shock and impact without chipping or shattering the way phenolic or glass-filled nylon can when a loaded cart slams a dock plate or curb. It also takes heat and chemicals in stride, holding from -45 to 250°F, and the stainless steel frame handles corrosive, sprayed-down bays. The pedestal precision ball bearing keeps it rolling smoothly on faster, frequent trips and tow lines. It is still a hard wheel with no cushioning, so it passes floor shock through and can mark a soft floor, but its strength is surviving rough, high-impact handling. Rigid means it tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRough-handling carts that hit dock plates, curbs, and thresholds\u003c\/li\u003e\n\u003cli\u003eHigh-heat or chemical bays where a brittle wheel would crack\u003c\/li\u003e\n\u003cli\u003eFaster tow-line back corners needing impact-tough strength\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the load class, that the floor tolerates a hard wheel, and the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e a matching Defender D4 swivel up front so the cart steers while this rigid tracks straight, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need a wheel for steady high-heat sterilization rather than impact? See the hi-temp retort rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g41g42g-02\"\u003e49G41G42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 treads and bearings.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895190917339,"sku":"49TG42G-02","price":517.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.5PN_20SS.png?v=1653667970"},{"product_id":"colson-casters-49rh42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with HD Nylon Glass Filled Wheel - D4.04108.831 DT SS","description":"\u003ch3\u003eAbout This Wheel - D4.04108.831 DT SS\u003c\/h3\u003e\n\u003cp\u003ePick this 4-inch Defender D4 rigid when a damp cart wants a strong, chemical-resistant wheel on a bearing that needs no maintenance.\u003c\/p\u003e\n\u003cp\u003eThe wheel is heavy-duty glass-filled nylon, stiffened with glass fiber to take heavy point loads and resist chemicals and moisture without absorbing water. The Delrin plain bearing runs grease-free and corrosion-proof, with nothing to wash out in a sprayed-down bay, though that bearing keeps the working load lighter than the wheel alone could carry. The stainless steel frame suits wet, chemical areas, and the rigid mount tracks straight at the rear of the cart. Glass-filled nylon is hard and unforgiving, giving no cushioning and able to scratch a soft floor, so this combines a tough wheel with low upkeep rather than a smooth ride. It serves from -20 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDamp chemical-area carts that should run grease-free\u003c\/li\u003e\n\u003cli\u003eSanitary, sprayed-down rigs needing a tough nylon wheel\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners on hard, durable flooring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMatch the load to the Delrin bearing class, confirm the floor suits a hard wheel, and check the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e a matching Defender D4 swivel up front so the cart steers while this rigid tracks straight, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need faster roll or tow-line use? See the precision-ball heavy-duty rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49rg42gh-02\"\u003e49RG42GH-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the standard-duty glass-filled nylon Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49r1h42g-02\"\u003e49R1H42G-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895191310555,"sku":"49RH42G-02","price":117.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.831_20DT_20SS.png?v=1653667972"},{"product_id":"colson-casters-49wh42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Endura Solid Elastomer Wheel - D4.04108.831 EN SS","description":"\u003ch3\u003eAbout This Wheel - D4.04108.831 EN SS\u003c\/h3\u003e\n\u003cp\u003ePick this 4-inch Defender D4 rigid when a damp cart wants a cushioned, non-marking wheel on a bearing that needs no service.\u003c\/p\u003e\n\u003cp\u003eThe Delrin plain bearing runs grease-free and corrosion-proof, with nothing to flush out in a sprayed-down bay and nothing to seize in moisture, and it stays quiet under the lighter loads it is meant for. It carries an Endura solid elastomer wheel, a tough tread that cushions the ride and rolls over debris and rough floors more easily than a hard plastic wheel, stays non-marking on finished surfaces, and never flat-spots because it is solid through and through. It also holds up across heat and chemicals, from -45 to 250°F, on a stainless steel frame for corrosive service. The rigid mount tracks straight at the rear of the cart, making this the low-upkeep, comfortable-ride choice for clean, lightly loaded carts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDamp carts wanting a cushioned non-marking wheel, run grease-free\u003c\/li\u003e\n\u003cli\u003eRough or debris-strewn floors where a hard wheel jars the load\u003c\/li\u003e\n\u003cli\u003eLighter-duty rear corners needing low maintenance and a soft ride\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMatch the load to the Delrin class, confirm the true wheel color, and check the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the precision-ball Endura rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49wg42g-02\"\u003e49WG42G-02\u003c\/a\u003e where faster tow-line roll matters more than grease-free running.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Want the quietest, softest ride? Look at the Performa rubber Defender D4 casters in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the impact-tough high-impact polymer rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49tg42g-02\"\u003e49TG42G-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895191769307,"sku":"49WH42G-02","price":157.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.831_20EN_20SS.png?v=1653667975"},{"product_id":"colson-casters-49r1h42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Hi-Temp Nylon Glass Filled Wheel - D4.04108.831 HTBLK SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.831 HTBLK SS\u003c\/h3\u003e\n\u003cp\u003ePick this 4-inch Defender D4 rigid when a damp cart wants a strong chemical-resistant wheel and a bearing that needs no service.\u003c\/p\u003e\n\u003cp\u003eThe Delrin plain bearing runs grease-free, resists the corrosion that water and cleaning chemicals cause, and stays quiet under the lighter loads it is meant for. It carries a glass-filled nylon wheel, nylon stiffened with glass fiber so it stands up to heavier point loads and shrugs off chemicals and moisture without swelling. The stainless steel frame suits wet, sprayed-down bays, and the rigid mount tracks straight at the rear of the cart. Glass-filled nylon is hard and unforgiving, giving no cushioning and able to scuff a soft floor, so it pairs strength with low maintenance rather than a smooth ride. It serves from -20 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDamp chemical-area carts that should run grease-free\u003c\/li\u003e\n\u003cli\u003eSanitary, sprayed-down rigs needing a strong nylon wheel\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners on hard, durable flooring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep the load in the Delrin class, confirm the floor suits a hard wheel, and check the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the glass-filled nylon Delrin setup works best with a matching Defender D4 swivel up front, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Faster trips or tow lines? See the glass-filled nylon precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49r1g42g-02\"\u003e49R1G42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the glass-filled nylon roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49r1i42g-02\"\u003e49R1I42G-02\u003c\/a\u003e for heavier slow loads, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895192162523,"sku":"49R1H42G-02","price":134.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.831_20HTBLK_20SS.png?v=1653667977"},{"product_id":"colson-casters-49g41h42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Hi-Temp Polypropylene Wheel - D4.04108.831 RW SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.831 RW SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid when a hot wash-down line needs a caster with nothing to grease or corrode.\u003c\/p\u003e\n\u003cp\u003eIt pairs a stainless steel frame with Colson's blue hi-temp polypropylene wheel, the same heat-and-chemical-tolerant tread that handles retort and sterilization cycles up to 250°F, and runs it on a Delrin plain bearing. That bearing is the maintenance-free choice: no grease to flush out in a wash-down, nothing to seize when sprayed, and quiet running at the lighter loads it is sized for. The rigid mount tracks in a straight line for the back of a cart. As a hard plastic wheel it gives no cushioning and can scuff a soft floor, so it suits heat, moisture, and chemicals rather than a smooth or quiet ride.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHot wash-down and sterilization lines needing a grease-free bearing\u003c\/li\u003e\n\u003cli\u003eStainless carts sprayed with water and cleaning chemicals daily\u003c\/li\u003e\n\u003cli\u003eLighter-duty straight-tracking corners in damp, high-heat areas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep the load within the Delrin bearing class and confirm the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the hi-temp precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g41g42g-02\"\u003e49G41G42G-02\u003c\/a\u003e where faster tow-line roll matters more than grease-free duty.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Heavier loads at slow speed? See the hi-temp roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g41i42g-02\"\u003e49G41I42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the white-nylon Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4h42g-02\"\u003e49G4H42G-02\u003c\/a\u003e for cooler chemical service, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895192326363,"sku":"49G41H42G-02","price":212.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.831_20RW_20SS.png?v=1653667980"},{"product_id":"colson-casters-49gh42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Polyolefin Wheel - D4.04108.831 SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.831 SS\u003c\/h3\u003e\n\u003cp\u003ePick this 4-inch Defender D4 rigid when a damp, lightly loaded cart should cost little to buy and nothing to maintain.\u003c\/p\u003e\n\u003cp\u003eThe Delrin plain bearing is the maintenance-free option: it has no grease to wash out, nothing to seize when sprayed down, and resists the corrosion that moisture and cleaning chemicals cause. It carries an economical polyolefin wheel, a hard plastic that ignores water and chemicals, stays stable when wet, and wipes clean for sanitary areas, all on a stainless steel frame for corrosive service. The rigid mount holds a straight line at the back of the cart. Polyolefin is a value tread, so it carries less than a poly-on-core wheel and, being hard, gives no cushioning and can scuff a soft floor. It works from -45 to 180°F. This is the low-cost, low-upkeep rigid for clean, wet, lighter-duty carts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBudget wash-down carts that should run grease-free\u003c\/li\u003e\n\u003cli\u003eSanitary, sprayed-down areas where greased bearings fail\u003c\/li\u003e\n\u003cli\u003eLightly loaded rear corners that need to track straight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep the load in the Delrin and polyolefin class and confirm the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the precision-ball polyolefin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49gg42g-02\"\u003e49GG42G-02\u003c\/a\u003e where faster tow-line roll matters more than grease-free running.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need more capacity or heat above 180°F? Look at the Defender D4 casters with nylon or hi-temp wheels in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e pair with a matching Defender D4 swivel up front, or browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895192621275,"sku":"49GH42G-02","price":120.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.831_20SS.png?v=1653667982"},{"product_id":"colson-casters-49rg42gh-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Heavy-Duty Nylon glass Filled Wheel - D4.04108.835 DT SS","description":"\u003ch3\u003eAbout This Wheel - D4.04108.835 DT SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid when a cart carries serious weight and needs a strong, chemical-resistant wheel that rolls at a fair clip.\u003c\/p\u003e\n\u003cp\u003eThe wheel is heavy-duty glass-filled nylon, nylon reinforced with glass fiber and built for the upper end of the load range, so it takes heavy point loads without deforming and resists chemicals and moisture without absorbing water. The pedestal precision ball bearing keeps it rolling smoothly on faster, frequent trips and tow lines, and the stainless steel frame handles corrosive, sprayed-down bays. Glass-filled nylon is a hard wheel with no cushioning, so it passes floor shock straight through and can scratch a soft finished floor. This is the strength-and-capacity caster for hard surfaces, chosen for load and chemical resistance rather than a quiet ride. It serves from -20 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy chemical-area carts needing top-of-range nylon capacity\u003c\/li\u003e\n\u003cli\u003eStainless wash-down rigs that carry serious weight on hard floors\u003c\/li\u003e\n\u003cli\u003eFaster tow-line back corners where strength outranks cushioning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the heavy-duty load class, that the floor tolerates a hard nylon tread, and the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e a matching Defender D4 swivel up front so the loaded cart steers while this rigid tracks straight, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Standard-duty load is enough? See the standard glass-filled nylon precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49r1g42g-02\"\u003e49R1G42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 bearings and treads.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895192883419,"sku":"49RG42GH-02","price":129.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.835_20DT_20SS.png?v=1653667985"},{"product_id":"colson-casters-49wg42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Solid Elastomer Wheel - D4.04108.835 EN SS","description":"\u003ch3\u003eAbout This Wheel - D4.04108.835 EN SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid when a wash-down cart needs a tougher wheel than soft rubber but still wants a cushioned, non-marking ride.\u003c\/p\u003e\n\u003cp\u003eThe wheel is Endura solid elastomer, a tough tread that cushions the ride and eases over debris and rough floors better than a hard plastic wheel, while staying non-marking on finished surfaces and never flat-spotting because it is solid through and through. It takes heat and chemicals in stride, holding from -45 to 250°F, and the stainless steel frame handles corrosive, sprayed-down bays. The pedestal precision ball bearing keeps it rolling smoothly on faster, frequent trips and tow lines. This sits between the quiet soft rubber and the hard plastic options in the line: more durable than rubber, easier on the ride and the floor than nylon or phenolic. Rigid means it tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWash-down carts wanting cushioning without giving up toughness\u003c\/li\u003e\n\u003cli\u003eRough or debris-strewn floors where a hard wheel jars the load\u003c\/li\u003e\n\u003cli\u003eFaster tow-line back corners needing a non-marking solid tread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the load class, the true wheel color, and the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e a matching Defender D4 swivel up front so the cart steers while this rigid tracks straight, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Want the quietest, softest ride instead? Look at the Performa rubber Defender D4 casters in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the impact-tough high-impact polymer rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49tg42g-02\"\u003e49TG42G-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895193112795,"sku":"49WG42G-02","price":169.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.835_20EN_20SS.png?v=1653667988"},{"product_id":"colson-casters-49r1g42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Hi-Temp Nylon Glass Filled Wheel - D4.04108.835 HTBLK SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.835 HTBLK SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid when a cart needs a strong, chemical-resistant hard wheel and rolls at a fair clip.\u003c\/p\u003e\n\u003cp\u003eThe wheel is glass-filled nylon, nylon reinforced with glass fiber for extra strength and stiffness, so it carries a high load for its size and resists chemicals and moisture without absorbing water. The pedestal precision ball bearing keeps it rolling smoothly on faster, frequent trips and tow lines, and the stainless steel frame handles corrosive, sprayed-down bays. Glass-filled nylon is a hard wheel with no cushioning, so it passes floor shock straight through and can scratch a soft finished floor. This is the caster for strength and chemical resistance on a hard surface, not for a quiet or soft ride. It serves from -20 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigher-load chemical-area carts on hard, durable flooring\u003c\/li\u003e\n\u003cli\u003eStainless wash-down rigs needing a strong glass-filled wheel\u003c\/li\u003e\n\u003cli\u003eFaster tow-line back corners where strength beats cushioning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the floor tolerates a hard nylon tread and check the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e a matching Defender D4 swivel up front so the cart steers while this rigid tracks straight, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Want a grease-free bearing for damp duty? See the glass-filled nylon Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49r1h42g-02\"\u003e49R1H42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the glass-filled nylon roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49r1i42g-02\"\u003e49R1I42G-02\u003c\/a\u003e for heavier slow loads, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895193342171,"sku":"49R1G42G-02","price":140.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.835_20HTBLK_20SS.png?v=1653667990"},{"product_id":"colson-casters-49g41g42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Hi-Temp Polypropylene (Retort) Wheel - D4.04108.835 RW SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.835 RW SS\u003c\/h3\u003e\n\u003cp\u003ePut this 4-inch Defender D4 rigid on the back corners of a sterilization or retort cart that runs through steam and high heat all day.\u003c\/p\u003e\n\u003cp\u003eThe frame is stainless steel, built for the wash-down and corrosive conditions that rust a plated caster, and the wheel is Colson's blue hi-temp polypropylene retort tread, made to ride through autoclave and food-processing retort cycles where heat and steam would melt or soften an elastomer. It holds from -45 to 250°F and resists the chemicals used in sterile processing. The pedestal precision ball bearing keeps it rolling smoothly at speed and on tow lines. Being a hard plastic wheel, it offers no cushioning and can mark a soft finished floor, so this is a heat-and-chemistry caster, not a quiet one. Rigid means it tracks straight rather than steering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRetort and autoclave carts cycling through steam and high heat\u003c\/li\u003e\n\u003cli\u003eStainless sterile-processing rigs that rust a plated caster\u003c\/li\u003e\n\u003cli\u003eStraight-tracking back corners on faster tow-line carts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePair this rigid with a matching swivel up front and confirm the 5-5\/8-inch mount height and bolt pattern before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the hi-temp Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g41h42g-02\"\u003e49G41H42G-02\u003c\/a\u003e on lighter, grease-free wash-down lines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Carrying heavy loads slowly? See the hi-temp roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g41i42g-02\"\u003e49G41I42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the white-nylon rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4g42g-02\"\u003e49G4G42G-02\u003c\/a\u003e for chemical service under 180°F, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895193506011,"sku":"49G41G42G-02","price":178.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.835_20RW_20SS.png?v=1653667993"},{"product_id":"colson-casters-49gg42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Polyolefin Wheel - D4.04108.835 SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.835 SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid when a wash-down cart needs a low-cost, corrosion-proof caster and the load is modest.\u003c\/p\u003e\n\u003cp\u003eThe frame is stainless steel, built for wet and chemical areas that rust a plated caster, and the wheel is polyolefin, an economical hard plastic that resists chemicals and moisture, will not absorb water or swell, and wipes clean for sanitary use. The pedestal precision ball bearing keeps it rolling smoothly on faster, frequent trips and tow lines. Polyolefin is a value tread rather than a load champion, so it carries less than a poly-on-core wheel, and being hard it gives no cushioning and can mark a soft finished floor. It serves from -45 to 180°F. This is the budget-minded rigid for clean, damp, lightly loaded carts that need to track straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCost-sensitive wash-down carts with modest loads\u003c\/li\u003e\n\u003cli\u003eStainless sanitary rigs that need an easy-clean hard wheel\u003c\/li\u003e\n\u003cli\u003eStraight-tracking back corners on faster, frequently moved carts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKeep the load within the polyolefin class, confirm the floor suits a hard wheel, and check the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e a matching Defender D4 swivel up front so the cart steers while this rigid tracks straight, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need more capacity or heat above 180°F? Look at the stainless Defender D4 casters with nylon or hi-temp wheels in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 stainless sizes, bearings, and treads.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895193800923,"sku":"49GG42G-02","price":139.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.835_20SS.png?v=1653667996"},{"product_id":"colson-casters-49ri42gh-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Glass Glass Filled Wheel - D4.04108.839 DT SS WB29","description":"\u003ch3\u003eAbout This Wheel - D4.04108.839 DT SS WB29\u003c\/h3\u003e\n\u003cp\u003eReach for this 4-inch Defender D4 rigid when a heavy chemical-area cart is loaded to the limit and moved slowly.\u003c\/p\u003e\n\u003cp\u003eThis is the highest-capacity build in the heavy-duty glass-filled nylon line: the roller bearing carries the most weight of the three bearings offered, suited to slow, sustained pushing, and the glass-fiber-reinforced nylon wheel matches it with the strength to take heavy point loads while resisting chemicals and moisture. The stainless steel frame holds up in corrosive, sprayed-down bays, and the rigid mount keeps the load tracking straight at the rear. Glass-filled nylon is hard with no cushioning, so it transmits floor shock and can mark a soft surface, making this a pure strength-and-capacity caster for hard floors. It serves from -20 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum-load chemical-area carts pushed slowly down a line\u003c\/li\u003e\n\u003cli\u003eStainless transfer rigs at the top of the nylon capacity range\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners under the heaviest sustained loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the roller-bearing load class and that the floor accepts a hard nylon tread before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e a matching Defender D4 swivel up front so the heavy cart steers, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Lighter or faster duty? See the precision-ball heavy-duty rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49rg42gh-02\"\u003e49RG42GH-02\u003c\/a\u003e and Delrin heavy-duty rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49rh42g-02\"\u003e49RH42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the standard-duty glass-filled nylon roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49r1i42g-02\"\u003e49R1I42G-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895194063067,"sku":"49RI42GH-02","price":122.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.839_20DT_20SS_20WB29.png?v=1653667999"},{"product_id":"colson-casters-49wi42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Solid Elastomer Wheel - D4.04108.839 EN SS WB29","description":"\u003ch3\u003eAbout This Wheel - D4.04108.839 EN SS WB29\u003c\/h3\u003e\n\u003cp\u003eReach for this 4-inch Defender D4 rigid when a heavier cart needs a cushioned, non-marking wheel and is pushed slowly.\u003c\/p\u003e\n\u003cp\u003eThe roller bearing carries the most weight of the three bearings offered, suited to slow, sustained pushing, and it pairs with an Endura solid elastomer wheel that cushions the ride and rolls over debris and rough floors more easily than a hard plastic tread. Endura stays non-marking on finished surfaces and never flat-spots because it is solid through and through, and it tolerates heat and chemicals from -45 to 250°F. The stainless steel frame handles corrosive, sprayed-down bays, and the rigid mount keeps the load tracking straight at the rear. This is the heaviest-capacity Endura build in the line, for carts that want load and a comfortable, floor-friendly ride together.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavier carts wanting cushioning and capacity without a hard wheel\u003c\/li\u003e\n\u003cli\u003eRough or debris-strewn floors under slower, sustained pushing\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners needing a non-marking solid tread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the roller-bearing load class, the true wheel color, and the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e a matching Defender D4 swivel up front so the heavy cart steers, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Lighter or faster duty? See the precision-ball Endura rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49wg42g-02\"\u003e49WG42G-02\u003c\/a\u003e and grease-free Delrin Endura rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49wh42g-02\"\u003e49WH42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the impact-tough high-impact polymer rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49tg42g-02\"\u003e49TG42G-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895194554587,"sku":"49WI42G-02","price":163.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.839_20EN_20SS_20WB29.png?v=1653668002"},{"product_id":"colson-casters-49r1i42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Hi-Temp Glass Filled Nylon Wheel - D4.04108.839 HTBLK SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04108.839 HTBLK SS WB29\u003c\/h3\u003e\n\u003cp\u003eReach for this 4-inch Defender D4 rigid when a heavy chemical-area cart is loaded near its limit and pushed slowly.\u003c\/p\u003e\n\u003cp\u003eThe roller bearing carries the most weight of the three bearings offered, suited to slow, sustained pushing, and the glass-filled nylon wheel matches it: the glass-fiber reinforcement gives the tread the strength to take heavy point loads while resisting chemicals and moisture. The stainless steel frame holds up in corrosive, sprayed-down bays, and the rigid mount keeps the load tracking straight at the rear. Glass-filled nylon is hard with no cushioning, so it transmits floor shock and can mark a soft surface, which makes this a strength-and-capacity caster for hard floors rather than a quiet one. It serves from -20 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavily loaded chemical-area carts pushed slowly down a line\u003c\/li\u003e\n\u003cli\u003eStainless transfer rigs needing a strong, high-capacity nylon wheel\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners under sustained heavy loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the roller-bearing load class and that the floor accepts a hard nylon tread before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e a matching Defender D4 swivel up front so the heavy cart steers, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Lighter or faster duty? See the glass-filled nylon precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49r1g42g-02\"\u003e49R1G42G-02\u003c\/a\u003e and Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49r1h42g-02\"\u003e49R1H42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 treads and bearings.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895195177179,"sku":"49R1I42G-02","price":114.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.839_20HTBLK_20SS_20WB29.png?v=1653668005"},{"product_id":"colson-casters-49g41i42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Hi-Temp (Retort) Wheel - D4.04108.839 RW SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04108.839 RW SS WB29\u003c\/h3\u003e\n\u003cp\u003eReach for this 4-inch Defender D4 rigid when a heat-service cart is loaded heavy and pushed slowly across the floor.\u003c\/p\u003e\n\u003cp\u003eThe roller bearing is the heavy-haul option here, carrying more weight than a ball or Delrin bearing as long as the cart moves at a deliberate pace, which suits a packed oven rack or retort trolley. It rides on Colson's blue hi-temp polypropylene retort wheel, a hard tread that comes through steam and high heat to 250°F and resists sterilization chemicals, on a stainless steel frame that stands up to the wet, corrosive bays this equipment lives in. The rigid mount holds a straight line at the rear of the cart. Because the wheel is hard plastic it gives no cushioning and can mark a soft finished floor, so weight and heat come first, not ride quality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavily loaded oven and retort trolleys moved at walking pace\u003c\/li\u003e\n\u003cli\u003eStainless high-heat carts in wet, corrosive processing bays\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners under sustained heavy pushing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the load stays within the roller-bearing class and the 5-5\/8-inch mount height fits before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the hi-temp precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g41g42g-02\"\u003e49G41G42G-02\u003c\/a\u003e on the lead corners for smoother fast travel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Lighter, grease-free wash-down duty? See the hi-temp Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g41h42g-02\"\u003e49G41H42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the white-nylon roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4i42g-02\"\u003e49G4I42G-02\u003c\/a\u003e for cooler service, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895195406555,"sku":"49G41I42G-02","price":170.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.839_20RW_20SS_20WB29.png?v=1653668010"},{"product_id":"colson-casters-49jh42g-02-bl","title":"4\" Stainless Steel Top Plate Rigid Caster with Eagle Polyurethane Wheel - D4.04108.921 EG SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.921 EG SS\u003c\/h3\u003e\n\u003cp\u003eBolt this 4-inch Defender D4 rigid to the back corners of a cart that gets washed down daily, where a zinc-plated caster would rust out at the rivets and stain the floor within a season.\u003c\/p\u003e\n\u003cp\u003eThe Defender D4 is built in stainless construction, so the rig itself stands up to water, cleaning chemicals, and the daily hose-down that destroys plated steel. As a rigid it tracks the cart straight while the front swivels steer. The wheel is Colson HI-TECH polyurethane on a polyolefin core, non-marking and corrosion-proof, on a maintenance-free Delrin bearing that will not seize in a wet environment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFood-processing and prep carts in daily wash-down, rear corners, tiled floor\u003c\/li\u003e\n\u003cli\u003eDairy and beverage line carts on the back corners, daily sanitation, sealed floor\u003c\/li\u003e\n\u003cli\u003eWet-area transport where plated casters corrode, multi-shift\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSkip the rigid if the corner needs to steer; a rigid tracks straight only, so pair it with the \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-d404109929egsswb29\"\u003eD4 swivel\u003c\/a\u003e on the steering corners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-d404109929egsswb29\"\u003e4-inch Defender D4 swivel\u003c\/a\u003e on the front corners for a four-corner wash-down cart.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need a steering corner? See the \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-d404109929egsswb29\"\u003eD4 swivel\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-d404109929egsswb29\"\u003eD4 poly swivel\u003c\/a\u003e, \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-d4-04109-hf9\"\u003eD4 composite swivel\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895195701467,"sku":"49JH42G-02 ( BL)","price":99.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.921_20EG_20SS.png?v=1653668013"},{"product_id":"colson-casters-49jh42g-02","title":"4' Stainless Steel Top Plate Rigid Caster with Polyurethane Hi-Tech Wheel - D4.04108.921 SS","description":"\u003ch3\u003eAbout This Caster - D4.04108.921 SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 rigid when a wash-down cart needs to protect the floor and still carry more than a rubber wheel can.\u003c\/p\u003e\n\u003cp\u003eThe wheel is Colson HI-TECH polyurethane on a polyolefin core, a non-marking tread that takes more load than soft rubber, resists abrasion, and will not flat-spot when the cart sits parked, all while staying easy on a finished floor. Compared with a hard plastic wheel it gives a little under load and rolls with less effort, yet it carries real weight. The stainless steel frame handles corrosive, sprayed-down areas, and the Delrin plain bearing keeps the whole thing maintenance-free, with no grease to wash out and nothing to corrode. It runs from -45 to 180°F. Rigid means it tracks straight at the back of the cart.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWash-down carts that must protect finished floors under real load\u003c\/li\u003e\n\u003cli\u003eStainless rigs needing a non-marking wheel that resists flat spots\u003c\/li\u003e\n\u003cli\u003eGrease-free rear corners where rubber would flatten under weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the load suits the HI-TECH poly and Delrin classes and check the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e a matching Defender D4 swivel up front so the cart steers while this rigid tracks straight, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Want a cheaper, harder wheel for lighter duty? See the polyolefin Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49gh42g-02\"\u003e49GH42G-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 stainless sizes, bearings, and treads.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895196061915,"sku":"49JH42G-02","price":105.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.921_20SS.png?v=1653668016"},{"product_id":"colson-casters-49jg42g-02-bl","title":"4\" Stainless Steel Top Plate Rigid Caster with Eagle Polyurethane Wheel - D4.04108.925 EG SS","description":"\u003ch3\u003eAbout This Caster - 49JG42G-02 (BL)\u003c\/h3\u003e\n\u003cp\u003eSet this 4-inch Defender D4 rigid on the fixed corners of a wash-down or food-processing cart that has to track straight and shrug off corrosion.\u003c\/p\u003e\n\u003cp\u003eThe whole rig is stainless steel, so it stands up to daily wash-down, caustic cleaners, and the humidity of a food or pharma plant that would rust a zinc-plated caster. The wheel is Colson's Eagle polyurethane on a polyolefin core, the tougher of the two poly compounds offered here, bonded so the tread does not peel and built to carry a steady load on a 2-inch-wide face without marking the floor. Being rigid, it does not swivel: it holds the line behind the steering corners on a straight pull. The pedestal precision ball bearing keeps it rolling from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFixed corners of stainless wash-down and food-processing carts\u003c\/li\u003e\n\u003cli\u003eEagle polyurethane for tougher, higher-capacity sanitary duty\u003c\/li\u003e\n\u003cli\u003eRigid tracking behind the steering corners on a straight pull\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor an easier push on a manually-moved cart, the \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49jg42g-02\"\u003eHi-Tech wheel 49JG42G-02\u003c\/a\u003e trades Eagle for the lower-rolling Hi-Tech poly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e matching Defender D4 stainless swivel casters on the steering corners so the cart steers up front and tracks at the rear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need an easier roll or a swivel? See the \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49jg42g-02\"\u003eHi-Tech rigid 49JG42G-02\u003c\/a\u003e and the Defender D4 swivels in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the rest of the Defender D4 stainless steel casters in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895196487899,"sku":"49JG42G-02 ( BL )","price":111.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.925_20EG_20SS.png?v=1653668019"},{"product_id":"colson-casters-49jg42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Polyutethane (Hi-Tech) Wheel - D4.04108.925 SS","description":"\u003ch3\u003eAbout This Caster - 49JG42G-02\u003c\/h3\u003e\n\u003cp\u003eSet this 4-inch Defender D4 rigid on the fixed corners of a hand-pushed stainless cart where an easy roll matters as much as corrosion resistance.\u003c\/p\u003e\n\u003cp\u003eThe rig is stainless steel for daily wash-down, caustic cleaners, and the damp of a food or pharma plant. The wheel is Colson's Hi-Tech polyurethane on a polyolefin core, the ergonomic compound tuned for low rolling resistance, so a worker pushing a loaded cart by hand feels less drag than the tougher Eagle wheel asks for, and it stays non-marking on a finished floor. Being rigid it does not swivel, holding the line behind the steering corners on a straight pull. The pedestal precision ball bearing keeps it rolling from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFixed corners of hand-pushed stainless wash-down carts\u003c\/li\u003e\n\u003cli\u003eHi-Tech polyurethane tuned for an easy, low-effort roll\u003c\/li\u003e\n\u003cli\u003eRigid tracking straight behind the steering corners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor a tougher, higher-capacity wheel on heavier sanitary duty, the \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49jg42g-02-bl\"\u003eEagle wheel 49JG42G-02 (BL)\u003c\/a\u003e trades the easy roll for the harder-wearing Eagle poly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e matching Defender D4 stainless swivel casters on the steering corners so the cart steers up front and tracks at the rear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need higher capacity or a swivel? See the \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49jg42g-02-bl\"\u003eEagle rigid 49JG42G-02 (BL)\u003c\/a\u003e and the Defender D4 swivels in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the rest of the Defender D4 stainless steel casters in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895196651739,"sku":"49JG42G-02","price":117.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.925_20SS.png?v=1653668021"},{"product_id":"colson-casters-49ji42g-02-bl","title":"4\" Stainless Steel Top Plate Caster with Eagle Polyurethane Wheel - D4.04108.929 EG SS WB29","description":"\u003cp\u003eCheck out this 4\" Colson caster from the Defender D4 Series Stainless Steel casters series. This caster has a Eagle polyurethane wheel and roller bearing. Looking for help finding the right casters? Contact Caster Central today!\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895196848347,"sku":"49JI42G-02 ( BL )","price":105.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.929_20EG_20SS_20WB29.png?v=1653668024"},{"product_id":"colson-casters-49ji42g-02","title":"4\" Stainless Steel Top Plate Rigid Caster with Polyurethane (hi-Tech) Wheel - D4.04108.929 SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04108.929 SS WB29\u003c\/h3\u003e\n\u003cp\u003ePick this 4-inch Defender D4 rigid when a heavy wash-down cart has to be floor-friendly and is pushed at a slow, steady pace.\u003c\/p\u003e\n\u003cp\u003eThe roller bearing is the heavy-haul choice in this group, carrying more weight than a ball or Delrin bearing as long as travel stays slow, which suits a loaded transfer cart. It runs Colson HI-TECH polyurethane on a polyolefin core, a non-marking tread that takes far more load than rubber, resists abrasion, and will not flat-spot under a parked weight, while protecting a finished floor instead of scarring it. The stainless steel frame stands up to corrosive, sprayed-down bays. Rigid means it tracks in a straight line at the back of the cart. It serves from -45 to 180°F. This is weight plus floor protection, without the noise of a hard wheel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavily loaded wash-down carts moved at walking pace\u003c\/li\u003e\n\u003cli\u003eStainless rigs that must carry weight without marking floors\u003c\/li\u003e\n\u003cli\u003eStraight-tracking rear corners under sustained heavy loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the roller-bearing load class and the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the HI-TECH poly Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49jh42g-02\"\u003e49JH42G-02\u003c\/a\u003e on lighter, grease-free lines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Want the premium Eagle poly tread with electrogalvanized hardware? See the \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49ji42g-02-bl\"\u003e49JI42G-02-BL\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e pair with a matching Defender D4 swivel up front, or browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895197077723,"sku":"49JI42G-02","price":110.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04108.929_20SS_20WB29.png?v=1653668027"},{"product_id":"colson-casters-49c1i42v-02","title":"4\" Stainless Steel Top Plate Caster with Phoenlic - Hi -Temp Wheel - D4.04109.339 HT SS WB29","description":"\u003cp\u003eCheck out this 4\" Colson caster from the Defender D4 Series Stainless Steel casters series. This caster has a phenolic - Hi-Temp wheel and roller bearing. Looking for help finding the right casters? Contact Caster Central today!\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895197667547,"sku":"49C1I42V-02","price":180.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.339_20HT_20SS_20WB29.png?v=1653668030"},{"product_id":"colson-casters-49ci42v-02","title":"4\" Stainless Steel Top Plate Caster with Phenolic Wheel - D4.04109.339 SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04109.339 SS WB29\u003c\/h3\u003e\n\u003cp\u003ePut this 4-inch Defender D4 swivel under equipment that lives in a wash-down or corrosive bay and still has to carry a hard, heat-tolerant load.\u003c\/p\u003e\n\u003cp\u003eThe frame is stainless steel, Colson's corrosion-service build for areas that get sprayed down, run wet, or see cleaning chemicals that rust a plated caster. The wheel is hard phenolic on a roller bearing, which carries high load at a small diameter and shrugs off heat and oils that soften an elastomer tread, holding up from -45 to 250°F. That toughness comes with a tradeoff: phenolic is rigid, so it rolls loud and passes floor shock straight through, and it can mark or score a soft finished floor. This is the caster for heat, weight, and corrosion together, not for a quiet ride.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStainless wash-down carts and racks needing a hard, high-load wheel\u003c\/li\u003e\n\u003cli\u003eOven-adjacent and oily-floor equipment where elastomer treads soften\u003c\/li\u003e\n\u003cli\u003eCorrosive or frequently sprayed bays that rust a plated caster\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the 5-5\/8-inch mount height, top-plate bolt pattern, and load class suit your equipment before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e matching Defender D4 rigid casters on the back corners so the front swivels and the rear tracks, from the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need a quiet, floor-friendly ride instead of hard phenolic? Look at the stainless Defender D4 casters with rubber or polyurethane wheels in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 stainless sizes and treads.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895198027995,"sku":"49CI42V-02","price":138.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.339_20SS_20WB29.png?v=1653668033"},{"product_id":"colson-casters-49mh42v-02","title":"4\" Stainless Steel Caster with Performa Rubber (Flat\/Grey) Wheel - D4.04109.451 SS","description":"\u003ch3\u003eAbout This Caster - D4.04109.451 SS\u003c\/h3\u003e\n\u003cp\u003eReach for this 4-inch Defender D4 swivel when a quiet cart needs to steer and run maintenance-free in a wet workspace.\u003c\/p\u003e\n\u003cp\u003eThe swivel guides the front of the cart through tight clinical or food-prep spaces, with a 3.375-inch swivel radius to allow, while the Delrin plain bearing keeps both wheel and swivel grease-free and corrosion-proof where water would ruin a packed bearing. The grey flat-tread Performa rubber wheel rolls quietly and leaves no mark, its flat profile giving a planted, stable feel in exchange for a little more swivel effort than a round tread. The stainless steel frame backs it up for wash-down service. Soft rubber holds the load class modest, so this is the quiet, low-upkeep steering caster for lightly loaded carts. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuiet, grease-free carts steered through damp clinical or food areas\u003c\/li\u003e\n\u003cli\u003eManeuverable stainless rigs that must stay non-marking\u003c\/li\u003e\n\u003cli\u003eLighter-duty front corners wanting a stable flat-tread footprint\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlan for the 3.375-inch swivel radius and keep the load within the Delrin class before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the flat-grey Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mh42g-02\"\u003e49MH42G-02\u003c\/a\u003e on the back so the rear tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Faster duty or tow lines? See the flat-grey precision-ball swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mg42v-02\"\u003e49MG42V-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the easier-swiveling round-tread Performa Delrin swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1h42v-02\"\u003e49M1H42V-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895198322907,"sku":"49MH42V-02","price":146.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.451_20SS.png?v=1653668036"},{"product_id":"colson-casters-49mg42vt-02","title":"4\" Stainless Steel Caster with Performa Rubber (Flat\/Conductive) Wheel - D4.04109.455 COND SS","description":"\u003ch3\u003eAbout This Caster - D4.04109.455 COND SS\u003c\/h3\u003e\n\u003cp\u003eChoose this 4-inch Defender D4 swivel when a steering cart has to drain static charge in an ESD-sensitive or flammable workspace.\u003c\/p\u003e\n\u003cp\u003eThe swivel guides the front of the cart through tight bays, with a 3.375-inch swivel radius to allow, while the conductive flat-tread Performa wheel carries static from the cart down through the caster to ground rather than letting it build up, which protects electronics and reduces spark risk near solvents or dust. The flat profile gives a stable footprint, and the soft rubber rolls quietly and stays easy on floors, though the conductive compound can mark a light finished surface. The stainless steel frame suits wash-down service, and the pedestal precision ball bearing keeps wheel and swivel turning smoothly. Soft rubber keeps the load class modest, so static control comes first. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eESD-sensitive carts that must drain static while steering\u003c\/li\u003e\n\u003cli\u003eFlammable or solvent bays where maneuverable spark control is needed\u003c\/li\u003e\n\u003cli\u003eQuiet stable-footprint front corners under modest loads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVerify the conductive resistance spec and that the wheel and swivel both carry the path to ground, plus the 3.375-inch swivel radius, before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e matching conductive Defender D4 casters on all four corners so the whole cart stays grounded, including the rigid conductive \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mc42gt-02\"\u003e49MC42GT-02\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e No static concern, just a quiet non-marking swivel? See the grey flat-tread swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mg42v-02\"\u003e49MG42V-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the round-tread Performa swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1g42v-02\"\u003e49M1G42V-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895198650587,"sku":"49MG42VT-02","price":192.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.455_20COND_20SS.png?v=1653668043"},{"product_id":"colson-casters-49mg42v-02","title":"4\" Stainless Steel Caster with Performa Rubber (Flat\/Grey) Wheel - D4.04109.455 SS","description":"\u003ch3\u003eAbout This Caster - D4.04109.455 SS\u003c\/h3\u003e\n\u003cp\u003eUse this 4-inch Defender D4 swivel on the front of a quiet cart that needs a stable, planted footprint while it steers.\u003c\/p\u003e\n\u003cp\u003eThe swivel head guides the cart around corners, with a 3.375-inch swivel radius to allow, and the grey flat-tread Performa rubber wheel keeps the ride quiet and the floor unmarked while putting more rubber down for steadier rolling. The flat profile trades a little swivel ease for stability compared with a round tread, so it suits carts that benefit from a planted feel. The stainless steel frame handles corrosive, sprayed-down rooms, and the pedestal precision ball bearing keeps both wheel and swivel turning smoothly on frequent trips. Soft rubber keeps the load class modest. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuiet steering carts that want a stable flat-tread footprint\u003c\/li\u003e\n\u003cli\u003eStainless wash-down rigs that must stay non-marking while turning\u003c\/li\u003e\n\u003cli\u003eFrequently moved front corners on finished clinical or food floors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlan for the 3.375-inch swivel radius and keep the load within the soft-rubber class before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the grey flat-tread rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mc42g-02\"\u003e49MC42G-02\u003c\/a\u003e on the back so the rear tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need to drain static while steering? See the conductive flat-tread swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mg42vt-02\"\u003e49MG42VT-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the easier-swiveling round-tread Performa swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1g42v-02\"\u003e49M1G42V-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895199240411,"sku":"49MG42V-02","price":158.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.455_20SS.png?v=1653668046"},{"product_id":"colson-casters-49mi42v-02","title":"4\" Stainless Steel Caster with Performa Rubber (Flat\/Grey) Wheel - D4.04109.459 SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04109.459 SS WB29\u003c\/h3\u003e\n\u003cp\u003eGo with this 4-inch Defender D4 swivel when a quiet cart needs to steer while carrying near the top of the soft-rubber range.\u003c\/p\u003e\n\u003cp\u003eThe swivel head steers the front of the cart, with a 3.375-inch swivel radius to allow, and the roller bearing gives that swivel the highest capacity of the three bearings, suited to slow, controlled travel under load. The grey flat-tread Performa wheel rolls quietly and leaves no mark, its flat profile giving a planted, stable feel in exchange for a little more swivel effort than a round tread. The stainless steel frame handles wet, corrosive bays. Soft rubber still carries less than a hard wheel, so this is for noise-sensitive areas maneuvering a somewhat heavier cart, not true heavy haulage. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuiet carts that steer while carrying more soft-rubber load\u003c\/li\u003e\n\u003cli\u003eManeuverable stainless rigs in noise-sensitive wash-down areas\u003c\/li\u003e\n\u003cli\u003eFront steering corners under slower, heavier controlled travel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlan for the 3.375-inch swivel radius and confirm the soft-rubber roller load class before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the flat-grey roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mi42g-02\"\u003e49MI42G-02\u003c\/a\u003e on the back so the rear tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need to drain static while steering? See the conductive flat-tread roller swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mi42vt-02\"\u003e49MI42VT-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the grease-free flat-grey Delrin swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49mh42v-02\"\u003e49MH42V-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895199961307,"sku":"49MI42V-02","price":152.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.459_20SS_20WB29.png?v=1653668051"},{"product_id":"colson-casters-49xh42v-02","title":"4\" Stainless Steel Caster with Nylon Glass Filled Wheel - D4.04109.531 SS","description":"\u003ch3\u003eAbout This Caster - D4.04109.531 SS\u003c\/h3\u003e\n\u003cp\u003eReach for this 4-inch Defender D4 swivel when a damp cart needs to steer and run completely maintenance-free.\u003c\/p\u003e\n\u003cp\u003eThe swivel guides the front of the cart through tight clinical or chemical-area spaces, with a 3.375-inch swivel radius to allow, while the Delrin plain bearing keeps both wheel and swivel grease-free and corrosion-proof where water and chemicals would ruin a packed bearing. The Maxim glass-filled nylon wheel resists chemicals and moisture and stands up to heavy point loads thanks to its glass-fiber reinforcement, though the Delrin bearing keeps the working load lighter than the wheel alone could take. The stainless steel frame backs it up for wash-down service. Glass-filled nylon is hard with no cushioning and can scuff a soft floor, so this is the grease-free steering caster for clean, damp areas on hard flooring. It serves from -20 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGrease-free carts steered through damp chemical or clinical areas\u003c\/li\u003e\n\u003cli\u003eManeuverable stainless rigs that must stay maintenance-free\u003c\/li\u003e\n\u003cli\u003eFront steering corners on hard, durable flooring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlan for the 3.375-inch swivel radius and keep the load within the Delrin class before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Maxim Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xh42g-02\"\u003e49XH42G-02\u003c\/a\u003e on the back so the rear tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need faster roll or tow-line use? See the precision-ball Maxim swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xg42v-02\"\u003e49XG42V-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 sizes, bearings, and treads.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895200288987,"sku":"49XH42V-02","price":173.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.531_20SS.png?v=1653668054"},{"product_id":"colson-casters-49g4h42v-02","title":"4\" Stainless Steel Caster with White Nylon Wheel - D4.04109.531 WN SS","description":"\u003ch3\u003eAbout This Caster - D4.04109.531 WN SS\u003c\/h3\u003e\n\u003cp\u003eReach for this 4-inch Defender D4 swivel when a lighter wash-down cart needs to steer and still run completely maintenance-free.\u003c\/p\u003e\n\u003cp\u003eThe swivel lets the operator guide the front of the cart through tight, sanitary spaces, with a 3.375-inch swivel radius to account for, while the Delrin plain bearing keeps both the wheel and swivel grease-free and corrosion-proof in the wet conditions that ruin a packed bearing. The hard white nylon wheel resists chemicals and moisture, holds its shape when wet, and cleans up easily, mounted to a stainless steel frame for corrosion service. Nylon leaves no color mark, yet the tread is hard and unforgiving, transmitting shock and able to scratch a soft floor, and it serves from -20 to 180°F. This is the grease-free steering caster for clean, damp, lightly loaded carts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSteering corners on lighter wash-down carts run grease-free\u003c\/li\u003e\n\u003cli\u003eSanitary, moist areas needing a maintenance-free swivel\u003c\/li\u003e\n\u003cli\u003eManeuverable chemical-service rigs on hard flooring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlan for the 3.375-inch swivel radius and keep the load within the Delrin class before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the white-nylon Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4h42g-02\"\u003e49G4H42G-02\u003c\/a\u003e on the rear so it tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need heavier capacity while steering? See the white-nylon roller swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4i42v-02\"\u003e49G4I42V-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the white-nylon precision-ball swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4g42v-02\"\u003e49G4G42V-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895200583899,"sku":"49G4H42V-02","price":142.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.531_20WN_20SS.png?v=1653668057"},{"product_id":"colson-casters-49xg42v-02","title":"4\" Stainless Steel Caster with Nylon Glass Filled Wheel - D4.04109.535 SS","description":"\u003ch3\u003eAbout This Caster - D4.04109.535 SS\u003c\/h3\u003e\n\u003cp\u003eUse this 4-inch Defender D4 swivel on the front of a heavy chemical-area cart that has to steer as well as carry weight.\u003c\/p\u003e\n\u003cp\u003eThe swivel head guides the cart around equipment and into tight aisles, with a 3.375-inch swivel radius to plan for at the corners, while the Maxim glass-filled nylon wheel brings high capacity to the front of the cart: the glass-fiber reinforcement lets it take heavy loads while resisting chemicals and moisture without swelling. The pedestal precision ball bearing keeps both wheel and swivel turning smoothly during frequent trips, and the stainless steel frame suits corrosive, sprayed-down bays. Glass-filled nylon is hard with no cushioning and can scratch a soft floor, so this is the steering caster for heavy loads on hard surfaces, not for a soft ride. It serves from -20 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy chemical-area carts that must steer and carry weight\u003c\/li\u003e\n\u003cli\u003eManeuverable stainless rigs needing high-capacity nylon up front\u003c\/li\u003e\n\u003cli\u003eFrequently turned corners on hard, durable flooring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAllow for the 3.375-inch swivel radius and confirm the load class before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Maxim glass-filled nylon rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xg42g-02\"\u003e49XG42G-02\u003c\/a\u003e on the back so the rear tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Standard nylon capacity is enough? See the standard glass-filled nylon casters in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 sizes, bearings, and treads.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895200878811,"sku":"49XG42V-02","price":188.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.535_20SS.png?v=1653668060"},{"product_id":"colson-casters-49g4g42v-02","title":"4\" Stainless Steel Caster with White Nylon Wheel - D4.04109.535 WN SS","description":"\u003ch3\u003eAbout This Caster - D4.04109.535 WN SS\u003c\/h3\u003e\n\u003cp\u003eUse this 4-inch Defender D4 swivel on the front of a wash-down cart that has to turn and weave through a sanitary workspace.\u003c\/p\u003e\n\u003cp\u003eThe swivel head lets the operator steer the cart around equipment and into tight aisles, with a 3.375-inch swivel radius to plan for at the corners. It carries the same hard white nylon wheel, chemical and moisture resistant, easy to clean, and unaffected by the water it rolls through, mounted on a stainless steel frame for corrosion service. The pedestal precision ball bearing keeps both the wheel and swivel turning smoothly at speed. Nylon leaves no color mark, but its hard tread gives no cushioning and can scratch a soft floor, and it runs from -20 to 180°F rather than the hi-temp range. This is the steering caster for damp, chemical, frequently moved carts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSteering corners on wash-down carts that weave through sanitary aisles\u003c\/li\u003e\n\u003cli\u003eManeuverable stainless rigs in wet, chemical workspaces\u003c\/li\u003e\n\u003cli\u003eFrequently turned carts needing an easy-clean hard wheel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAllow for the 3.375-inch swivel radius and confirm the 5-5\/8-inch mount height before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the white-nylon precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4g42g-02\"\u003e49G4G42G-02\u003c\/a\u003e on the back so the rear tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Want a grease-free swivel for lighter duty? See the white-nylon Delrin swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4h42v-02\"\u003e49G4H42V-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the white-nylon roller swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4i42v-02\"\u003e49G4I42V-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895201239259,"sku":"49G4G42V-02","price":155.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.535_20WN_20SS.png?v=1653668064"},{"product_id":"colson-casters-49xi42v-02","title":"4\" Stainless Steel Caster with Nylon Glass Filled Wheel - D4.04109.539 SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04109.539 SS WB29\u003c\/h3\u003e\n\u003cp\u003eGo with this 4-inch Defender D4 swivel when a maxed-out chemical-area cart has to both carry weight and steer.\u003c\/p\u003e\n\u003cp\u003eThe swivel head puts the steering at the front of the cart, with a 3.375-inch swivel radius to allow, while the roller bearing gives that swivel the highest capacity of the three bearings, carrying serious weight at a slow, controlled pace. The Maxim glass-filled nylon wheel brings the top of the nylon load range to the steering corner, resisting chemicals and moisture while standing up to heavy point loads. The stainless steel frame suits corrosive, sprayed-down service. Glass-filled nylon is hard with no cushioning and can mark a soft floor, so this is the heavy-load steering caster for hard surfaces, not for a soft ride. It serves from -20 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum-load chemical-area carts that must steer and carry weight\u003c\/li\u003e\n\u003cli\u003eManeuverable stainless rigs at the top of the nylon capacity range\u003c\/li\u003e\n\u003cli\u003eFront steering corners under the heaviest controlled travel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAllow for the 3.375-inch swivel radius and confirm the roller-bearing load class before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Maxim roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xi42g-02\"\u003e49XI42G-02\u003c\/a\u003e on the back so the rear tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Lighter or faster duty? See the precision-ball Maxim swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xg42v-02\"\u003e49XG42V-02\u003c\/a\u003e and Delrin Maxim swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49xh42v-02\"\u003e49XH42V-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 sizes and treads.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895201501403,"sku":"49XI42V-02","price":180.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.539_20SS_20WB29.png?v=1653668066"},{"product_id":"colson-casters-49g4i42v-02","title":"4\" Stainless Steel Caster with White Nylon Wheel - D4.04109.539 WN SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04109.539 WN SS WB29\u003c\/h3\u003e\n\u003cp\u003eGo with this 4-inch Defender D4 swivel when a heavy wash-down cart has to both carry weight and steer through the workspace.\u003c\/p\u003e\n\u003cp\u003eThe swivel head puts the steering at the front of the cart, with a 3.375-inch swivel radius to allow at the corners, while the roller bearing gives that swivel the load capacity to carry serious weight at a slow, controlled pace. The hard white nylon wheel resists chemicals and moisture, stays stable when soaked, and cleans easily, on a stainless steel frame for corrosive, sprayed-down service. Nylon leaves no color mark, but it is a hard tread that offers no give and can mark a soft floor, and it runs from -20 to 180°F. This is the caster for heavy carts that need to maneuver in clean, wet areas, not for speed or a soft ride.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy wash-down carts that must steer through tight workspaces\u003c\/li\u003e\n\u003cli\u003eLoaded sanitary rigs maneuvered slowly in wet, chemical bays\u003c\/li\u003e\n\u003cli\u003eFront steering corners carrying serious weight on hard floors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAllow for the 3.375-inch swivel radius and keep the load within the roller-bearing class before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the white-nylon roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4i42g-02\"\u003e49G4I42G-02\u003c\/a\u003e on the back so the rear tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Lighter steering duty? See the white-nylon Delrin swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4h42v-02\"\u003e49G4H42V-02\u003c\/a\u003e and precision-ball swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49g4g42v-02\"\u003e49G4G42V-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 sizes and treads.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895201763547,"sku":"49G4I42V-02","price":148.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.539_20WN_20SS_20WB29.png?v=1653668069"},{"product_id":"colson-casters-49m1h42v-02","title":"4\" Stainless Steel Caster with Performa Rubber (Round) Wheel - D4.04109.551 SS","description":"\u003ch3\u003eAbout This Caster - D4.04109.551 SS\u003c\/h3\u003e\n\u003cp\u003eReach for this 4-inch Defender D4 swivel when a quiet cart needs to steer and run completely maintenance-free in a damp space.\u003c\/p\u003e\n\u003cp\u003eThe swivel lets the operator guide the front of the cart through tight clinical or food-prep areas, with a 3.375-inch swivel radius at the corners, while the round-tread Performa rubber wheel swivels easily and rolls quietly without marking the floor. The Delrin plain bearing keeps both wheel and swivel grease-free and corrosion-proof, which matters where water and cleaning chemicals would wreck a packed bearing. The stainless steel frame backs that up for wet service. Soft rubber holds the load class modest, so this is the quiet, easy-steering, low-upkeep choice for lightly loaded carts. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuiet, grease-free carts steered through clinical or food-prep areas\u003c\/li\u003e\n\u003cli\u003eManeuverable damp-area rigs that must stay non-marking\u003c\/li\u003e\n\u003cli\u003eLighter-duty front corners needing an easy-swiveling soft tread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlan for the 3.375-inch swivel radius and keep the load within the Delrin class before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Performa Delrin rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1h42g-02\"\u003e49M1H42G-02\u003c\/a\u003e on the back so the rear tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Carrying more weight? See the Performa roller swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1i42v-02\"\u003e49M1I42V-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the Performa precision-ball swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1g42v-02\"\u003e49M1G42V-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895201960155,"sku":"49M1H42V-02","price":141.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.551_20SS.png?v=1653668072"},{"product_id":"colson-casters-49m1g42v-02","title":"4\" Stainless Steel Caster with Performa Rubber (Round) Wheel - D4.04109.555 SS","description":"\u003ch3\u003eAbout This Caster - D4.04109.555 SS\u003c\/h3\u003e\n\u003cp\u003eUse this 4-inch Defender D4 swivel on the front of a quiet cart that has to turn easily through a hospital corridor or food-service line.\u003c\/p\u003e\n\u003cp\u003eThe swivel head steers the cart around corners and into tight spaces, and the round-tread Performa rubber wheel is ideal for it: the rounded profile swivels with very little effort and rolls quietly while protecting the floor. Performa is Colson's soft, non-marking institutional rubber, on a stainless steel frame for corrosion service in wet, sprayed-down rooms. The pedestal precision ball bearing keeps both the wheel and swivel turning smoothly during frequent, faster trips. Soft rubber carries less than a hard wheel, so the appeal here is a quiet, easy-steering, floor-friendly ride. Allow a 3.375-inch swivel radius at the corners. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEasy-steering hospital and food-service carts on finished floors\u003c\/li\u003e\n\u003cli\u003eManeuverable stainless wash-down rigs that must stay quiet\u003c\/li\u003e\n\u003cli\u003eFrequently turned carts needing a soft, non-marking round tread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlan for the 3.375-inch swivel radius and keep the load in the soft-rubber class before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Performa rubber precision-ball rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1g42g-02\"\u003e49M1G42G-02\u003c\/a\u003e on the back so the rear tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Need a grease-free swivel? See the Performa Delrin swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1h42v-02\"\u003e49M1H42V-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e the Performa roller swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1i42v-02\"\u003e49M1I42V-02\u003c\/a\u003e, or the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895202222299,"sku":"49M1G42V-02","price":154.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.555_20SS.png?v=1653668075"},{"product_id":"colson-casters-49m1i42v-02","title":"4\" Stainless Steel Caster with Performa Rubber (Round) Wheel - D4.04109.559 SS WB29","description":"\u003ch3\u003eAbout This Caster - D4.04109.559 SS WB29\u003c\/h3\u003e\n\u003cp\u003eGo with this 4-inch Defender D4 swivel when a quiet cart needs to both steer and carry near the top of the soft-rubber range.\u003c\/p\u003e\n\u003cp\u003eThe swivel head steers the front of the cart, with a 3.375-inch swivel radius to allow, while the roller bearing gives that swivel the most load capacity of the three bearings offered, suited to slow, controlled travel. The round-tread Performa rubber wheel swivels easily, rolls quietly, and protects finished floors as Colson's non-marking institutional tread, on a stainless steel frame for wet, corrosive service. Soft rubber still carries less than a hard poly wheel, so this is for noise-sensitive areas that need to maneuver a somewhat heavier cart, not for true heavy haulage. It serves from -45 to 180°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eQuiet carts that must steer while carrying more soft-rubber load\u003c\/li\u003e\n\u003cli\u003eManeuverable stainless rigs in noise-sensitive wash-down areas\u003c\/li\u003e\n\u003cli\u003eFront steering corners under slower, heavier controlled travel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAllow for the 3.375-inch swivel radius and confirm the soft-rubber roller load class before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePairs with:\u003c\/strong\u003e the Performa roller rigid \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1i42g-02\"\u003e49M1I42G-02\u003c\/a\u003e on the back so the rear tracks straight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWrong fit?\u003c\/strong\u003e Lighter steering duty? See the Performa Delrin swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1h42v-02\"\u003e49M1H42V-02\u003c\/a\u003e and precision-ball swivel \u003ca href=\"https:\/\/www.castercentral.com\/products\/colson-casters-49m1g42v-02\"\u003e49M1G42V-02\u003c\/a\u003e in the \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso in this family:\u003c\/strong\u003e browse the full \u003ca href=\"https:\/\/www.castercentral.com\/collections\/colson-casters\"\u003eColson collection\u003c\/a\u003e for other Defender D4 sizes and treads.\u003c\/p\u003e","brand":"Colson","offers":[{"title":"Default Title","offer_id":42895202517211,"sku":"49M1I42V-02","price":147.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/products\/D4.04109.559_20SS_20WB29.png?v=1653668077"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0630\/3298\/3771\/collections\/Defender-D4-Series-Colson-Casters.png?v=1727386581","url":"https:\/\/castercentral.com\/collections\/defender-d4-series-colson-casters.oembed?page=20","provider":"Caster Central","version":"1.0","type":"link"}