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.
Custom made to order. All sales final.
Each Hamilton product is custom manufactured for your order (lead time is shown on each product page). Please confirm all specs before checkout, since made-to-order items aren't eligible for returns, exchanges or refunds. Need help? Call 844-439-4335 or email info@casterhq.com and we'll verify fit for you.
Rubber and polyurethane favor floor protection; phenolic and steel favor heavy capacity. Compare materials →








| Tread | Core | Wheel sizes | Rated per caster | Listed temperature | Where it fits |
|---|---|---|---|---|---|
| Steel | 3-1/8 in | 4,000 to 6,000 lb | -40°F to 320°F | heavy loads and track | |
| Nylon | 3-1/8 in | 3,500 lb | -30°F to 220°F | low rolling effort on smooth floors, handles wet areas | |
| Polyurethane | Steel | 3-1/8 in | 2,500 lb | -50°F to 200°F | quiet, floor-friendly and long wearing |
Ratings are for single casters of Hamilton son of Mini-Mite casters, from product fields [S1].
Related to Hamilton son of Mini-Mite casters: industrial casters.
Single Hamilton son of Mini-Mite casters are rated 2,500 to 6,000 lb; most fall between 3,500 and 6,000 lb.
Steel leads on Hamilton son of Mini-Mite casters, rated 4,000 to 6,000 lb per caster. Among Hamilton son of Mini-Mite casters, nylon is next at 3,500 lb.
Jordan Wilson, CasterHQ · reviewed October 20, 2026 · 844-439-4335 · info@casterhq.com
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