Up to 350 lbs
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Up to 40,000 lbs
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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.
Wheel = wheel diameter · capacity is per caster.
























Hamilton ergonomic casters in polyurethane, nylon and phenolic, 3-1/2 to 8 in wheels, rated 450 to 2,000 lb per caster.
| Tread | Core | Wheel sizes | Rated per caster | Listed temperature | Where it fits |
|---|---|---|---|---|---|
| Polyurethane | Aluminum and Cast iron | 3-1/2, 4, 5, 6 and 8 in | 450 to 2,000 lb | -5°F to 160°F | quiet, floor-friendly and long wearing |
| Nylon | 4, 5, 6 and 8 in | 800 to 1,200 lb | -30°F to 220°F | low rolling effort on smooth floors, handles wet areas | |
| Phenolic | 4, 5, 6 and 8 in | 800 to 1,400 lb | Up to 250°F | hard and easy rolling on smooth, dry floors |
Ratings are for single casters of Hamilton ergonomic casters, from product fields [S1].
| Wheel | Treads | Rated |
|---|---|---|
| 3-1/2 x 2 in | polyurethane | 550 to 600 lb |
| 4 x 2 in | polyurethane, nylon and phenolic | 450 to 2,000 lb |
| 5 x 2 in | polyurethane, nylon and phenolic | 600 to 2,000 lb |
| 6 x 2 in | polyurethane, nylon and phenolic | 800 to 1,800 lb |
| 8 x 2 in | polyurethane, nylon and phenolic | 1,000 to 3,000 lb |
Related to Hamilton ergonomic casters: industrial casters, standard ergonomic and ergo X2.
Single Hamilton ergonomic casters are rated 450 to 2,000 lb; most fall between 720 and 1,200 lb.
Most Hamilton ergonomic casters use 4-1/2 x 6-1/2 in. Other plates on Hamilton ergonomic casters: 4 x 4-1/2 in and 2-1/2 x 3-5/8 in.
Polyurethane leads on Hamilton ergonomic casters, rated 450 to 2,000 lb per caster. Among Hamilton ergonomic casters, nylon is next at 800 to 1,200 lb.
Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com
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