Keyed Replacement Wheels · 20mm Bore · 450–2,250 lb · Polyurethane

Diameter: 4 to 10 inTread: 1-1/2, 2 and 3 inCapacity: 450 to 2,250 lb per wheel

Wheels with a 20 mm bore: polyurethane treads. Polyurethane on steel cores is the most common tread here, rated 450 to 2,250 lb per wheel in 4, 5, 6, 8 and 10 in.

Wheels with a 20 mm bore by tread

Tread	Core	Wheel sizes	Rated per wheel	Listed temperature	Where it fits
Polyurethane	Steel	4, 5, 6, 8 and 10 in	450 to 2,250 lb		quiet, floor-friendly and long wearing

Ratings are for single wheels of wheels with a 20 mm bore, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
4 x 1-1/2 in	polyurethane	450 to 600 lb
5 x 1-1/2 in	polyurethane	600 lb
5 x 2 in	polyurethane	800 lb
6 x 1-1/2 in	polyurethane	600 lb
6 x 2 in	polyurethane	900 lb
6 x 3 in	polyurethane	1,500 lb
8 x 2 in	polyurethane	1,000 lb
8 x 3 in	polyurethane	1,850 lb

Choosing wheels with a 20 mm bore

Load: divide the loaded weight by three for a four-wheel cart [S2]. A 1,500 lb wheel from this page then suits about 4,500 lb, and the strongest at 2,250 lb about 6,750 lb.
Floor: on wheels with a 20 mm bore, polyurethane protects finished floors and runs quietly; check the rating if the cart also crosses rough concrete.

Wheels with a 20 mm bore questions

How much weight can wheels with a 20 mm bore carry?

Single wheels with a 20 mm bore are rated 450 to 2,250 lb; most fall between 600 and 1,500 lb.

What wheel material is most common on wheels with a 20 mm bore?

Polyurethane leads on wheels with a 20 mm bore, rated 450 to 2,250 lb per wheel.

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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