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.