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.

Colson Plate Casters by Wheel Size · 3" Wheel · 4 Styles · Up to 200 lb · Polyolefin · Ref 2

Plate sizes: 2-1/2 x 3-5/8Bolt holes: 1-3/4 x 2-13/16Diameter: 3 inTread: 1-1/4 inCapacity: up to 200 lb

Casters on the 2-1/2 x 3-5/8 plate pattern suit light institutional and furniture-grade frames. Expect wheel diameters 3 in, polyolefin and stainless treads, and capacities 200 lb. Bring plate and stem measurements when replacing unmarked casters so the new corners sit level. Confirm stem length and thread pitch on stem mounts so the shoulder seats flush in the boss. These light-duty options cover everyday light institutional and furniture-grade frames without jumping to extreme forged series.