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.

4" x 4-1/2" Steel Casters

Plate sizes: 4 x 4-1/2Bolt holes: 2-5/8 x 3-5/8Diameter: 5-3/4 to 9-3/4 inTread: 4-5/8 in

Casters on the 4 x 4-1/2 plate pattern suit warehouse carts, racks, and everyday plant fixtures. Typical builds show wheel diameters 5-3/4 to 9-3/4 in and steel treads. Pair swivel and rigid casters for tracking, or use total locks where the cart must park on a grade. Replace worn corners in matched sets when possible so the cart tracks straight under load. These medium-duty options cover everyday warehouse carts, racks, and everyday plant fixtures without jumping to extreme forged series.