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

8" x 2" Rubber Casters

Plate sizes: 4 x 4-1/2Bolt holes: 2-5/8 x 3-3/8 slotted to 3 x 3Diameter: 8 inTread: 2 inCapacity: up to 675 lb

44 Series - Medium/Heavy (Up To 1250 Lb/ casters for finished floors and quiet institutional carts. You will see top plates around 4 x 4-1/2, wheel diameters 8 in, and rubber treads across the SKUs listed below. Bring plate and stem measurements when replacing unmarked casters so the new corners sit level. When floors see chemicals or washdowns, prefer sealed bearings and non-absorbent wheel compounds.