Back to Casters

Flat-Free Foam-Filled Casters · 6"-10" · Standard Duty · Zero Punctures · 250–300 lb · Polyurethane

Diameter: 6 to 10 inTread: 2 and 3 inPlate: 4 x 4-1/2 inCapacity: 250 to 300 lb per caster
This page lists flat-free casters and wheels with polyurethane treads. Polyurethane is the most common tread here, rated 250 to 300 lb per caster in 6, 8 and 10 in.
Caster Finder Find your caster in 3 steps Mount, size, capacity, narrowed to your exact spec in this collection.

Flat-Free Foam-Filled Casters: buying guide

Flat-free casters and wheels in polyurethane, 6 to 10 in wheels, rated 250 to 300 lb per caster.

Diameter 6 to 10 inTread 2 and 3 inPlate 4 x 4-1/2 in250 to 300 lb per caster

Flat-free casters and wheels by tread

Tread Core Wheel sizes Rated per caster Listed temperature Where it fits
Polyurethane 6, 8 and 10 in 250 to 300 lb quiet, floor-friendly and long wearing

Ratings are for single casters of flat-free casters and wheels, from product fields [S1].

Wheel sizes

Wheel Treads Rated
6 x 2 in polyurethane 250 lb
8 x 3 in polyurethane 275 lb
10 x 3 in polyurethane 280 to 300 lb

Choosing flat-free casters and wheels

  1. Load: plan on three casters carrying a four-caster cart [S2]; at 280 lb each, a common rating here, that is about 840 lb, and the 300 lb top rating covers about 900 lb.
  2. Mount: most flat-free casters and wheels use a 4 x 4-1/2 in top plate; measure bolt hole centers on the old plate and compare.
  3. Floor: on flat-free casters and wheels, polyurethane protects finished floors and runs quietly; check the rating if the cart also crosses rough concrete.
  4. Rig: swivel and rigid flat-free casters and wheels are listed, with side lock brake options.

Flat-free casters and wheels questions

How much weight can flat-free casters and wheels carry?

Single flat-free casters and wheels are rated 250 to 300 lb.

What top plate do flat-free casters and wheels use?

Most flat-free casters and wheels use 4 x 4-1/2 in.

What wheel material is most common on flat-free casters and wheels?

Polyurethane leads on flat-free casters and wheels, rated 250 to 300 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.

Search