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.

4" x 2" Polyurethane Casters

Plate sizes: 4 x 5Diameter: 4 inTread: 2 inCapacity: up to 600 lb

4 x 5 inch top-plate casters for warehouse carts on epoxy and smooth concrete. Typical builds show wheel diameters 4 in, polyurethane treads, and capacities 600 lb. Harder poly rolls easier on smooth epoxy; softer poly cushions vibration on uneven slabs. When floors see chemicals or washdowns, prefer sealed bearings and non-absorbent wheel compounds. These light-duty options cover everyday warehouse carts on epoxy and smooth concrete without jumping to extreme forged series.