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 1-1/4" Polyurethane Casters

Diameter: 4, 5 inTread: 1-1/4 inCapacity: up to 350 lbStem: threaded

Polyurethane, polyolefin, and rubber casters here serve warehouse carts on epoxy and smooth concrete. You will see wheel diameters 4, 5 in, polyurethane, polyolefin, and rubber treads, and threaded-stem and plate-mount frames across the SKUs listed below. Size capacity from the heaviest corner load with shock margin, and keep overall height consistent across the set. Confirm stem length and thread pitch on stem mounts so the shoulder seats flush in the boss.

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3 types

Rubber and polyurethane favor floor protection; phenolic and steel favor heavy capacity. Compare materials →

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

4" x 1-1/4" Polyurethane Casters

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