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 Thread Guards TG Casters w/ Duralast Polyurethane Wheels · Up to 1,250 lb · 4"–8"

Diameter: 4, 6, 8 inTread: 2 inCapacity: up to 1,250 lb

This collection gathers threaded-stem and plate-mount casters used on warehouse carts on epoxy and smooth concrete. Typical builds show wheel diameters 4, 6, 8 in, polyurethane treads, and capacities 1,250 lb. For dual-wheel or wide treads, check fork clearance and swivel radius in tight aisles. Confirm stem length and thread pitch on stem mounts so the shoulder seats flush in the boss.