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5" x 1-1/4" Polyurethane Casters · 325 lb · 3-1/8" x 4-1/8" Plate

Diameter: 5 inTread: 1-1/4 inPlate: 3-1/8 x 4-1/8 inCapacity: 325 lb per caster
This page lists 5 x 1-1/4 in polyurethane casters. Polyurethane on polyolefin cores is the most common tread on these 5 x 1-1/4 in polyurethane casters, rated 325 lb per caster.

5 x 1-1/4 in polyurethane casters by tread

Tread Core Wheel sizes Rated per caster Listed temperature Where it fits
Polyurethane Polyolefin 5 in 325 lb quiet, floor-friendly and long wearing

Ratings are for single casters of 5 x 1-1/4 in polyurethane casters, from product fields [S1].

Choosing 5 x 1-1/4 in polyurethane casters

  1. Load: plan on three casters carrying a four-caster cart [S2]; 5 x 1-1/4 in polyurethane casters rated 325 lb each then carry about 975 lb.
  2. Mount: most 5 x 1-1/4 in polyurethane casters use a 3-1/8 x 4-1/8 in top plate; measure bolt hole centers on the old plate and compare.
  3. Floor: on 5 x 1-1/4 in polyurethane casters, polyurethane protects finished floors and runs quietly; check the rating if the cart also crosses rough concrete.
  4. Rig: swivel and rigid 5 x 1-1/4 in polyurethane casters are listed.

5 x 1-1/4 in polyurethane casters questions

How much weight can 5 x 1-1/4 in polyurethane casters carry?

Single 5 x 1-1/4 in polyurethane casters are rated 325 lb.

What top plate do 5 x 1-1/4 in polyurethane casters use?

Most 5 x 1-1/4 in polyurethane casters use 3-1/8 x 4-1/8 in.

What wheel material is most common on 5 x 1-1/4 in polyurethane casters?

Polyurethane leads on 5 x 1-1/4 in polyurethane casters, rated 325 lb per caster.

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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