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.

Hamilton Spring-Loaded Workhorse SPWH Casters w/ UltraGlide XC Wheels · 6" Wheels · Up to 1,450 lb

Diameter: 6 inTread: 2 inCapacity: up to 1,450 lb

Polyurethane casters here serve warehouse carts on epoxy and smooth concrete. Typical builds show wheel diameters 6 in, polyurethane treads, and plate-mount frames. Softer treads quiet finished floors; harder compounds last longer on chips, heat, and rough concrete. Replace worn corners in matched sets when possible so the cart tracks straight under load. These medium-duty options cover everyday warehouse carts on epoxy and smooth concrete without jumping to extreme forged series.