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12MM Bore

Diameter: 4 to 8 inTread: 1-1/2, 2 and 3 inCapacity: 450 to 1,500 lb per wheel
12MM bore wheels in polyurethane. Polyurethane on steel cores is the most common tread on these 12MM bore wheels, rated 450 to 1,500 lb per wheel in 4, 5, 6 and 8 in.

12MM bore wheels by tread

Tread Core Wheel sizes Rated per wheel Listed temperature Where it fits
Polyurethane Steel 4, 5, 6 and 8 in 450 to 1,500 lb quiet, floor-friendly and long wearing

Ratings are for single wheels of 12MM bore wheels, 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 to 900 lb
6 x 1-1/2 in polyurethane 600 lb
6 x 3 in polyurethane 1,500 lb
8 x 2 in polyurethane 1,000 lb

Choosing 12MM bore wheels

  1. Load: plan on three wheels carrying a four-wheel cart [S2]; at 1,000 lb each, a common rating here, that is about 3,000 lb, and the 1,500 lb top rating covers about 4,500 lb.
  2. Floor: on 12MM bore wheels, polyurethane protects finished floors and runs quietly; check the rating if the cart also crosses rough concrete.

12MM bore wheels questions

How much weight can 12MM bore wheels carry?

Single 12MM bore wheels are rated 450 to 1,500 lb; most fall between 600 and 1,000 lb.

What wheel material is most common on 12MM bore wheels?

Polyurethane leads on 12MM bore wheels, rated 450 to 1,500 lb per wheel.

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.

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