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.

8" x 3" Phenolic Casters

Plate sizes: 3-3/8 x 5-1/4, 4-1/2 x 6-1/4Bolt holes: 2-7/16 x 4-15/16 slotted to 3-3/8 x 5-1/4Diameter: 8 inTread: 3 inCapacity: up to 3,000 lb

Casters on the 3-3/8 x 5-1/4 plate pattern suit bake carts, metalworking fixtures, and debris-heavy floors. You will see wheel diameters 8 in, phenolic treads, and capacities 2,500 to 3,000 lb across the SKUs listed below. Replace worn corners in matched sets when possible so the cart tracks straight under load. 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.