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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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.






Flat-free casters and wheels in polyurethane, 6 to 10 in wheels, rated 250 to 300 lb per caster.
| 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 | 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 |
Related: caster wheels.
Single flat-free casters and wheels are rated 250 to 300 lb.
Most flat-free casters and wheels use 4 x 4-1/2 in.
Polyurethane leads on flat-free casters and wheels, rated 250 to 300 lb per caster.
Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com
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