The below capacity ranges indicate the working (dynamic) load that each caster will support. A safety factor should be included in your formula to determine your required load rating per caster.

W/(C-1)=R W is total weight needed to move. C is total number of casters required. R is ideal load rating, with safety factor built in. Divide the total load weight by one less caster than you will use to safely determine load rating.

12" x 3" Phenolic Casters

Plate sizes: 4-1/2 x 6-1/4Bolt holes: 2-7/16 x 4-15/16 slotted to 3-3/8 x 5-1/4Diameter: 12 inTread: 3 inCapacity: up to 3,500 lb

Match a 4-1/2 x 6-1/4 top plate when bolting casters under bake carts, metalworking fixtures, and debris-heavy floors. You will see wheel diameters 12 in, phenolic treads, and capacities 3,500 lb across the SKUs listed below. When floors see chemicals or washdowns, prefer sealed bearings and non-absorbent wheel compounds. Larger plates spread bolt stress on thick frames under continuous tow abuse. These heavy-duty options cover everyday bake carts, metalworking fixtures, and debris-heavy floors without jumping to extreme forged series.