Heavy Duty Polyurethane Casters

These range from about 1,600 to 4,200 lbs per caster. Divide the total loaded weight across the number of casters, then size up. A common practice is to assume only three of four casters carry the load at any moment, since floors are rarely level.

For most applications, yes. Polyurethane carries nearly as much weight as steel while rolling quieter, protecting floors, and gripping better. Steel or cast iron still wins for extreme heat or floors covered in sharp metal debris, but for general heavy industrial rolling, polyurethane is usually the smarter choice.

No. Polyurethane is non-marking and floor-friendly, which is a big reason it is preferred over steel and cast iron for finished factory floors. The urethane tread distributes load and cushions floor seams rather than scoring the surface.

Polyurethane carries much more weight than rubber, resists oils and chemicals that degrade rubber, and lasts longer under heavy use. Rubber rolls a little softer at light loads, but for heavy duty work polyurethane is the more durable, higher-capacity choice.

Polyurethane treads on a metal core give you most of the capacity of a solid steel wheel while solving steel's biggest problems: noise, floor marking, and poor traction. Urethane grips the floor for controlled stops and starts, absorbs shock from floor seams and debris, and shrugs off oils, solvents, and most chemicals. The thicker the tread and the larger the core, the higher the capacity, which is why heavy duty models run 6 inches and up.

This collection runs from 1,600 lbs to 4,200 lbs per caster across 6, 8, 10, and 12 inch diameters, in swivel, rigid, and brake configurations. Larger wheels roll more easily over floor obstacles and spread the load, so for the heaviest carts step up in diameter. Build your set with two rigid and two swivel casters for stable, steerable carts, and add brakes where you need the load to stay put.