Up to 350 lbs
Up to 7,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
Shock absorbing
Outdoor / rough terrain
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Browse all specialty caster types
All measurements indicate the wheel diameter by the tread width.
The below capacity ranges indicate the working (dynamic) load that each caster will support. A safety factor should be included in your formula to determine your required load rating per caster.
W/(C-1)=R W is total weight needed to move. C is total number of casters required. R is ideal load rating, with safety factor built in. Divide the total load weight by one less caster than you will use to safely determine load rating.
Plate dimensions shown are overall mounting plate size.
When replacing existing casters, select the closest plate size and verify bolt-hole compatibility.
BHP = Bolt Hole Pattern, shown under each plate.
Rubber and polyurethane favor floor protection; phenolic and steel favor heavy capacity. Compare materials →



















Light duty casters for carts, displays, fixtures and lab and medical equipment, mostly rated 90 to 350 lb each. Polyurethane, gray rubber, soft TPR, polyolefin, nylon and phenolic wheels on plate, threaded stem, grip ring and expanding adapter mounts.
| Wheel | Typical ratings | Character |
|---|---|---|
| Polyurethane and solid polyurethane | 75 to 350 lb | Quiet, non-marking, good wear |
| Gray rubber | 50 to 325 lb | Softest and quietest; grips smooth floors |
| Soft TPR | 180 to 350 lb | Thermoplastic rubber, quiet and cushioned |
| Polyolefin | 80 to 350 lb | Hard, light, resists water and many chemicals |
| Phenolic | 200 to 350 lb | Hard, easy rolling, keep dry |
| Nylon | 75 to 800 lb | Hard, low rolling effort, louder on seams |
Single casters from product fields [S1].
If the loaded cart divided by three is more than about 300 lb per caster [S2], or the cart is pushed over rough floors all day, move up to a medium duty caster.
Next step up: medium duty casters. Stems: 7/16 grip ring stem casters.
Most here are rated 90 to 350 lb each.
Plate, threaded stem, grip ring stem and expanding adapter.
Gray rubber, soft TPR or polyurethane. They are quiet and do not mark.
When each caster carries more than about 300 lb or the floor is rough.
Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com
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