Mold-On Rubber on Iron | 4-12 in to 1,300 lb

Diameter: 4 to 12 inTread: 2, 2-1/2 and 3 inCapacity: 300 to 1,300 lb per wheel

This page lists mold-on rubber on iron wheels. Rubber on cast iron cores is the most common tread here, rated 300 to 1,300 lb per wheel in 4, 5, 6, 8, 10 and 12 in.

Mold-on rubber on iron wheels by tread

Tread	Core	Wheel sizes	Rated per wheel	Listed temperature	Where it fits
Rubber	Cast iron	4 to 12 in	300 to 1,300 lb	-40°F to 180°F	cushioned and quiet on finished floors

Ratings are for single wheels of mold-on rubber on iron wheels, from product fields [S1].

Wheel sizes

Wheel	Treads	Rated
5 x 2 in	rubber	450 lb
6 x 2 in	rubber	500 lb
8 x 2 in	rubber	600 lb
8 x 2-1/2 in	rubber	850 lb
8 x 3 in	rubber	900 lb
10 x 2-1/2 in	rubber	1,000 lb
12 x 2-1/2 in	rubber	1,200 lb
12 x 3 in	rubber	1,300 lb

Choosing mold-on rubber on iron wheels

Load: divide the loaded weight by three for a four-wheel cart [S2]. A 1,000 lb wheel from this page then suits about 3,000 lb, and the strongest at 1,300 lb about 3,900 lb.
Floor: on mold-on rubber on iron wheels, rubber protects finished floors and runs quietly; check the rating if the cart also crosses rough concrete.

Related to mold-on rubber on iron wheels: caster wheels.

Mold-on rubber on iron wheels questions

How much weight can mold-on rubber on iron wheels carry?

Single mold-on rubber on iron wheels are rated 300 to 1,300 lb; most fall between 500 and 1,000 lb.

What wheel material is most common on mold-on rubber on iron wheels?

Rubber leads on mold-on rubber on iron wheels, rated 300 to 1,300 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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