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The bolt-hole pattern is the specific layout and spacing of the holes drilled into a caster's top plate — it has to line up exactly with the mounting holes (or hole pattern you'll drill) on the equipment.
Even casters with the same overall plate size can have different bolt-hole spacing, so plate size alone isn’t enough to confirm fitment — the hole pattern needs to match too.
Replacing a caster on equipment with existing mounting holes, or matching a caster to a manufacturer-specified bolt pattern.
Matching plate size but not hole spacing. Two plates can be the same overall size with different bolt patterns — measure hole-to-hole distance specifically, not just plate edges.
Browse our Plate Casters for real specs, capacities, and pricing.
Can I drill new holes if the pattern doesn't match?
Sometimes, if the plate has room and the equipment allows it, but matching the existing pattern is simpler and preserves structural integrity.
Is bolt-hole pattern standardized across brands?
Not universally — patterns vary by manufacturer and caster model, which is why measuring directly matters more than assuming compatibility.
