Top Plate Casters

A top plate caster mounts with a flat rectangular plate that has four bolt holes, attaching to the underside of a cart or piece of equipment. It is the most common caster mount because it is secure, stable, and easy to install and replace.

Measure the plate dimensions and the bolt-hole spacing on your existing caster or equipment, then match those to the replacement. Plate sizes grow with capacity, so heavy-duty casters have larger plates. We list plate and bolt-hole dimensions on each product to make matching easy.

Generally yes. The four-bolt top plate spreads load over a wider area than a single stem, giving a stronger, more stable mount for heavy and high-traffic equipment. Stem casters suit tubular furniture and lighter applications where a flat mounting surface is not available.

This collection ranges from about 75 lbs up to 5,400 lbs per caster, depending on wheel size and material. Pick the capacity that covers your total load divided across four casters, with a safety margin, and confirm the plate size suits your equipment.

The four-hole top plate distributes load over a broad area, making it the strongest and most stable common mount. It bolts directly to any flat surface, installs in minutes, and swaps out easily when a caster wears. Because it is the industry standard, replacement casters are easy to source and bolt patterns are widely compatible. For most carts and equipment, top plate is the default and best choice.

This collection carries top plate casters from 75 lbs to 5,400 lbs per caster in rubber, polyurethane, polyolefin, nylon, phenolic, metal, and composite wheels across 2 inch through 12 inch sizes. When ordering, confirm the plate dimensions and bolt-hole spacing match your equipment, since plate sizes vary by capacity. Swivel, rigid, and brake versions are all available to build a complete set.