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 SPHS Casters w/ Plastex Phenolic Wheels · 6" Wheels · Up to 1,200 lb

Diameter: 6 inTread: 2 inCapacity: up to 1,200 lb

Hamilton Spring Loaded SPHS Casters for bake carts, metalworking fixtures, and debris-heavy floors. Catalog chips cover wheel diameters 6 in, phenolic treads, and plate-mount frames. Softer treads quiet finished floors; harder compounds last longer on chips, heat, and rough concrete. Phenolic shrugs off heat and oils that soften rubber or poly on bake and shop carts. These medium-duty options cover everyday bake carts, metalworking fixtures, and debris-heavy floors without jumping to extreme forged series.