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.

Under 350 lbs. each
351–675 lbs. each
676–1,250 lbs. each
1,251–2,000 lbs. each
2,001–4,000 lbs. each
4,001–7,500 lbs. each
7,501–10,000 lbs. each
10,001–15,000 lbs. each
15,001–20,000 lbs. each
20,001–30,000 lbs. each
30,000+ lbs. each

12" x 5" Polyurethane Wheels

Diameter: 12 inTread: 4 inCapacity: up to 9,000 lb

Polyurethane casters here serve warehouse carts on epoxy and smooth concrete. Expect wheel diameters 12 in, polyurethane treads, and industrial frames. Bring plate and stem measurements when replacing unmarked casters so the new corners sit level. Use kingpinless or heavy plate series when shock loads keep shearing kingpin races. These heavy-duty options cover everyday warehouse carts on epoxy and smooth concrete without jumping to extreme forged series.