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.

Durastar PTU/DTU 4" DURATOUGH Polyurethane Wheels

Diameter: 4 inTread: 1-1/4, 2 inCapacity: up to 700 lb

Shop polyurethane and polyolefin replacement wheels when you need a new tread without buying a full caster. You will see wheel diameters 4 in, polyurethane and polyolefin treads, and industrial frames across the SKUs listed below. Confirm bearing type and axle hardware so the replacement spins freely under load. Match bore, hub length, and overall wheel width to the fork before ordering a bare wheel.

Shop by wheel type

2 types

Wheel = wheel diameter · capacity is per wheel.

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

Durastar PTU/DTU 4" DURATOUGH Polyurethane Wheels

Shop by wheel type