Up to 350 lbs
Up to 7,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
Shock absorbing
Outdoor / rough terrain
View All Specialty Casters
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.
Wheel = wheel diameter · capacity is per caster.












| Wheel | Single caster | Set of 4 |
|---|---|---|
| 4 x 2 in | 800 lb | 3,200 lb |
| 5 x 2 in | 1,100 lb | 4,000 lb |
| 6 x 2 in | 1,200 lb | 5,000 lb (tool box kit) |
| 8 x 2 in | 1,250 lb | 5,000 lb |
From product titles and fields [S1]. The 4, 5 and 8 in sets pair braked swivels with rigids; the 6 in tool box kit is listed as rigid.
An iron center does not flex under load, so the wheel holds its shape and rolls with little effort. The bonded tread gives a little over cracks and debris and does not chip concrete the way a steel wheel can. Listed temperature ranges top out at 180°F.
A set rating assumes all four casters touch the floor. On an uneven floor one caster can carry far more than a quarter of the load, so leave a margin [S2].
More: polyurethane wheels and 6 x 2 casters.
800 to 1,250 lb per caster, depending on size.
4 x 4-1/2 in.
The 4, 5 and 8 in sets pair braked swivels with rigid casters, rated 3,200 to 5,000 lb per set.
Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com
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