Hamilton Speed casters pair a precision Spinfinity swivel with polyurethane or rubber wheels for towlines and high-cycle transport running 3 mph and faster. The Spinfinity swivel tracks straight and survives the heat and load of continuous towing. Size for the towed load at a 25% margin and confirm the tow speed.
| Series / Config | Size | Capacity | Wheel | Best For |
|---|---|---|---|---|
| Speed Spinfinity Heavy | 8" to 10" | up to 17,500 lb | Polyurethane on Spinfinity precision swivel | Heavy towlines, automotive line carts |
| Speed Spinfinity Standard | 6" to 8" | up to 10,000 lb | Polyurethane on Spinfinity precision swivel | High-cycle in-plant transport at speed |
| Speed Rubber Tread | 6" to 8" | up to 6,000 lb | Rubber on Spinfinity precision swivel | Quieter towing, shock cushioning at speed |
| Speed Light Tow | 5" to 6" | up to 2,500 lb | Polyurethane on Spinfinity precision swivel | Light tugger trains, repeated short tows |
Representative Hamilton configurations by capacity tier. Exact per-size load ratings, wheel diameters, and mounting are confirmed on your quote. Call 844-439-4335.
Add cart weight plus payload, divide by the number of casters, then add 25% for the dynamic loads that come with speed. Towing concentrates load on the trailing casters in turns, so do not size to the average. The line reaches up to 17,500 lb per caster on the heavy rig.
Polyurethane is the standard for towing speed, with low rolling resistance, a non-marking tread, and durability under continuous cycle. Rubber rolls quieter and cushions more shock at speed, at lower capacity. Both ride on the Spinfinity swivel.
The Spinfinity precision swivel is the reason this line exists, because a standard raceway overheats and wears out under the constant rotation of towing above walking speed. Confirm the rated tow speed and verify the top plate and bolt pattern, and do not exceed the rating since swivel flutter and wheel heat both climb fast above it.
Speed casters belong on automotive assembly lines, tier-1 supplier plants, and any towline or tugger train moving carts continuously at speed. The mix of high cycle count, real speed, and turning load is what destroys ordinary casters and what the Spinfinity swivel is engineered for.
A Speed Spinfinity caster pairs Hamilton's precision Spinfinity swivel with a polyurethane or rubber wheel for towlines running 3 mph and faster. The swivel is engineered to track straight and survive the heat and load of continuous towing, where ordinary swivels fail, and the line reaches up to 17,500 lb per caster.
The Hamilton Speed Spinfinity line reaches up to 17,500 lb per caster on the heavy polyurethane rig, and Hamilton custom-engineers higher capacities on a quote basis. Call 844-439-4335 with your towed weight, tow speed, and frame details to cross-reference.
Speed Spinfinity casters are built for towing at 3 mph and faster, where the precision swivel earns its keep. Each config has a rated tow speed you should not exceed, since swivel flutter and wheel heat climb quickly above it. Call 844-439-4335 and we will confirm the rated tow speed for your load.
At tow speed the swivel, not the wheel, is the part that fails, as continuous rotation under load overheats a standard raceway and causes flutter and wander. The Spinfinity swivel is engineered to run straight and survive that duty, so if your tow carts wander or eat swivels, a precision swivel rated for your speed is the fix.
Polyurethane is the standard for towing, with low rolling resistance, a non-marking tread, and durability under continuous cycle, and it carries the higher capacities. Rubber rolls quieter and cushions more shock at speed, at lower capacity. Both ride on the Spinfinity swivel.
Yes. Hamilton Caster has manufactured in Hamilton, Ohio since 1907, and the Speed Spinfinity line is built there. CasterHQ is a Hamilton authorized distributor shipping from Mansfield, Texas.
Part of the full Hamilton Casters range. Compare related Hamilton series:
Spec guide: Casters for Towing & AGVs: Speed →
