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

Rubber Expandable Adapters

Diameter: 1 to 1-7/8 in

This collection gathers expanding-stem casters used on finished floors and quiet institutional carts. Catalog chips cover wheel diameters 1 to 1-7/8 in and rubber treads. For dual-wheel or wide treads, check fork clearance and swivel radius in tight aisles. Match bolt-hole spacing or stem diameter to the frame before you standardize a fleet. These medium-duty options cover everyday finished floors and quiet institutional carts without jumping to extreme forged series.