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Semi-pneumatic (Rubber on Plastic Core) - 350

These semi pneumatic and solid rubber wheels on plastic cores give a cushioned ride without air. Wheels and casters in this collection range from 350 to 650 lb each. Sizes run 8 x 2-1/2 in and 10 x 2-3/4 in, plus a 5 in caster. Recycled and eco rubber options are in this aisle. The tire rolls over cracks and debris and never goes flat. Match the axle size, hub length, and wheel diameter before you order. Capacities below are per wheel unless a listing says set. Confirm the load rating printed on the title before you order. Read the listing for the exact wheel size, overall height, and mount shown. Measure the old wheel or caster before you buy. Verify the stem or plate matches your old unit before you buy. Check the floor type and the heaviest load the cart will carry before you choose. Hand truck aisle: hand truck parts. Rubber wheel aisle: rubber wheels.

Semi-pneumatic (rubber on plastic core) wheels by tread

Tread Core Wheel sizes Rated per wheel Listed temperature Where it fits
Rubber Polyolefin 5, 8 and 10 in 450 to 650 lb cushioned and quiet on finished floors
Pneumatic 10 in Not listed rough ground, outdoors, fragile loads
Polyurethane Polyolefin 5 in Not listed quiet, floor-friendly and long wearing
Ball 2-1/8 in Not listed multi-direction rolling

Ratings are for single wheels of semi-pneumatic (rubber on plastic core) wheels, from product fields [S1].

Wheel sizes

Wheel Treads Rated
5 x 1-1/4 in polyurethane and rubber 350 lb
8 x 2-1/2 in rubber 450 lb
10 x 2-3/4 in rubber 650 lb

Choosing semi-pneumatic (rubber on plastic core) wheels

  1. Load: plan on three wheels carrying a four-wheel cart [S2]; semi-pneumatic (rubber on plastic core) wheels rated 650 lb each then carry about 1,950 lb.
  2. Floor: on semi-pneumatic (rubber on plastic core) wheels, rubber, pneumatic and polyurethane protect finished floors and run quietly; check the rating if the cart also crosses rough concrete.
  3. Rig: swivel semi-pneumatic (rubber on plastic core) wheels are listed.

Semi-pneumatic (rubber on plastic core) wheels questions

How much weight can semi-pneumatic (rubber on plastic core) wheels carry?

Single semi-pneumatic (rubber on plastic core) wheels are rated 450 to 650 lb.

What wheel material is most common on semi-pneumatic (rubber on plastic core) wheels?

Rubber leads on semi-pneumatic (rubber on plastic core) wheels, rated 450 to 650 lb per wheel.

Are complete casters listed with semi-pneumatic (rubber on plastic core) wheels?

Yes. Complete casters are on this page too, rated 350 lb each; compare the wheel size and bore with your semi-pneumatic (rubber on plastic core) wheels before ordering.

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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