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.

6" x 3" Poly-on-Iron Casters

Plate sizes: 4-1/2 x 6-1/4, 5-1/4 x 7-1/4Bolt holes: 2-7/16 x 4-15/16 slotted to 3-3/8 x 5-1/4; 3-3/8 x 5-1/4 slotted to 4-1/8 x 6-1/8Diameter: 6 inTread: 3 inCapacity: up to 2,900 lb

4-1/2 x 6-1/4 inch top-plate casters for warehouse carts on epoxy and smooth concrete. Typical builds show wheel diameters 6 in, polyurethane treads, and capacities 2,900 lb. For dual-wheel or wide treads, check fork clearance and swivel radius in tight aisles. Larger plates spread bolt stress on thick frames under continuous tow abuse. Harder poly rolls easier on smooth epoxy; softer poly cushions vibration on uneven slabs.

BHP: 1-3/4″ × 2-7/8″, slotted to 3″

BHP: 1-3/4″ × 2-15/16″ slotted to 2-3/8″ × 3-3/8″

BHP: 2-5/8” X 3-5/8” (Slotted to 3” x 3”)

BHP: 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4"

(3″ Wide Casters), Industry-Standard

BHP: 3-3/8" x 5-1/4" slotted to 4-1/8" x 6-1/8"

BHP: 4-1/8" x 6" slotted to 4-1/2" x 6-1/8"

View All • 21 Plate Sizes

Plate Casters

Stem Casters

Stainless Casters

Ergonomic Casters

Leveling Casters

6" x 3" Poly-on-Iron Casters