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

3.5" x 1.25" Stainless Steel Casters

Plate sizes: 2-1/2 x 3-5/8Bolt holes: 1-3/4 x 2-13/16Diameter: 3-1/2, 3.5 inTread: 1-1/4 inCapacity: up to 300 lb

Casters on the 2-1/2 x 3-5/8 plate pattern suit light institutional and furniture-grade frames. You will see wheel diameters 3.5, 3-1/2 in, steel and stainless treads, and capacities 300 lb across the SKUs listed below. Bring plate and stem measurements when replacing unmarked casters so the new corners sit level. Replace worn corners in matched sets when possible so the cart tracks straight under load.