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.













Caster weld plates and shims: weld-on pads, bolt-on top plate shims and quick change pads from 2-3/8 x 3-5/8 to 6-1/4 x 7-1/2 in, unplated or zinc plated.
| Item | Sizes |
|---|---|
| Weld-on top plate shims | 2-3/8 x 3-5/8, 4 x 4-1/2, 4-1/2 x 6-1/4 in |
| Bolt-on top plate shims, zinc plated | 3-1/8 x 4-1/8, 4 x 4-1/2, 5-1/4 x 7-1/4, 6-1/4 x 7-1/2 in |
| Quick change caster pads | 2-3/8 x 3-5/8, 4 x 4-1/2 in |
| Albion PC620000 quick release pad | 4-1/2 x 6-1/4 in |
| Durastar pad kits | 2-3/8 x 3-5/8 weld-on, 4 x 4-1/2 bolt-on |
From product titles [S1].
A quick change pad lets a caster be swapped without cutting or rewelding. It suits fleets of carts where casters wear out often.
Casters by plate size: heavy duty casters.
A drilled steel plate you weld to a frame so a caster can be bolted on.
Use an unplated pad, or grind the plating off first. Heated zinc gives off harmful fumes.
From 2-3/8 x 3-5/8 in to 6-1/4 x 7-1/2 in.
Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com
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