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.

Under 350 lbs. each
351–675 lbs. each
676–1,250 lbs. each
1,251–2,000 lbs. each
2,001–4,000 lbs. each
4,001–7,500 lbs. each
7,501–10,000 lbs. each
10,001–15,000 lbs. each
15,001–20,000 lbs. each
20,001–30,000 lbs. each
30,000+ lbs. each

4" x 1-1/4" Polyurethane Casters

Capacity: up to 300 lb

4" x 1-1/4" Polyurethane Casters for warehouse carts on epoxy and smooth concrete. You will see polyurethane treads, plate-mount frames, and capacities 300 lb across the SKUs listed below. Softer treads quiet finished floors; harder compounds last longer on chips, heat, and rough concrete. Size capacity from the heaviest corner load with shock margin, and keep overall height consistent across the set.

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