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.

Soft wheels dig into pile and feel sticky. Hard nylon and polyolefin twin wheels keep a smaller contact patch on top of the fibers, so the chair rolls with less push. Soft rubber or TPR still belongs here when the same chair also rolls onto hard floors and you want quieter roll.
| Style | Size | Per caster | Best for |
|---|---|---|---|
| Shepherd PPA twin nylon | 50 and 60 mm | About 75 to 100 lb | Office and task chairs on carpet |
| Shepherd PBH ball | 2 in polyolefin | About 80 lb | Chairs pushed in every direction |
| Dinette twin nylon | 2 in | About 90 lb (sets about 360 to 450) | Dining chairs on carpet |
| 3 in office / rollerblade | 3 in nylon, PU, neoprene | About 100 to 150 lb (sets to about 750) | Heavier task chairs |
| Soft rubber / TPR | 2 to 3 in | About 75 to 110 lb where listed | Mixed carpet and hard floors |
Admin ACTIVE titles for for-chairs-and-furniture-on-carpet-7-16-grip-ring-stems, pulled October 26, 2026 [S1]. One 3 in polyurethane title shows 500 lb; Commerce should verify before using that figure in SEO.
They can, but hard nylon or polyolefin twin wheels usually roll easier on pile. Pick soft rubber when the chair also spends time on hard floors.
No. 7/16 x 7/8 grip ring presses into a socket. Threaded stems screw into a nut or tapped hole. See the threaded stem hub if your chair uses threads.
Jordan Wilson, CasterHQ · reviewed October 26, 2026 · 844-439-4335 · info@casterhq.com
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