Casters for Carts

Diameter: 4 to 10 inTread: 2 and 3 inPlate: 4 x 4-1/2 inCapacity: 650 to 900 lb per caster

Casters for carts with polyurethane, pneumatic, phenolic and rubber wheels. Polyurethane is the main group here, rated 900 lb per caster. Ratings by tread: pneumatic 650 lb and phenolic 800 lb. Replacement wheels are listed too: a set of four 8 x 2 in rubber on iron wheels rated 2,400 lb per set.

Shop by wheel material

2 types

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

Casters for carts by tread

Tread	Core	Wheel sizes	Rated per caster	Listed temperature	Where it fits
Polyurethane		6 in	900 lb		quiet, floor-friendly and long wearing
Pneumatic		10 in	650 lb		rough ground, outdoors, fragile loads
Phenolic		4 in	800 lb	Up to 250°F	hard and easy rolling on smooth, dry floors
Rubber	Polyolefin and Cast iron	8 in	Not listed		cushioned and quiet on finished floors

Ratings are for single casters of casters for carts, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
4 x 2 in	phenolic	800 lb
6 x 2 in	polyurethane	900 lb
8 x 2 in	rubber	2,400 lb per set of 4
10 x 3 in	pneumatic	650 lb

Choosing casters for carts

Load: divide the loaded weight by three for a four-caster cart [S2]. A 900 lb caster from this page then suits about 2,700 lb, and the strongest at 900 lb about 2,700 lb.
Mount: most casters for carts use a 4 x 4-1/2 in top plate; measure bolt hole centers on the old plate and compare.
Floor: on casters for carts, polyurethane, pneumatic and rubber are kinder to tile and finished floors; phenolic rolls easier under heavy loads on smooth concrete.
Rig: swivel and rigid casters for carts are listed, with side lock brake options.

Related: industrial casters.

Casters for carts questions

How much weight can casters for carts carry?

Single casters for carts are rated 650 to 900 lb; most fall between 650 and 900 lb.

What top plate do casters for carts use?

Most casters for carts use 4 x 4-1/2 in.

What wheel material is most common on casters for carts?

Polyurethane leads on casters for carts, rated 900 lb per caster. Pneumatic is next at 650 lb.

Are replacement wheels sold for casters for carts?

Yes. Wheel-only listings for casters for carts are here, sized 8 in; match the bore and hub length to your axle.

Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com

Sources

[S1] CasterHQ product fields (rated load, diameter, width, wheel and core material, temperature range, mount) and product descriptions for the items on this page, pulled October 20, 2026.
[S2] Preferred Equipment casters and wheels quick guide PDF (prefeq.com): load sizing on one less caster, wheel types and floor notes.

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"

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