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Manufactured Lean

Ultralast™ Wheels

Capacity Range: 900 - 4200 lbs.

  • Composition
High grade liquid cast polyurethane.
  • Hardness
93-94 Durometer (Shore A).
  • Bayshore Rebound
57%
  • Elongation at Break
550%
  • Tensile Strength
6500 psi.
  • Temperature Range
-50° to +200° F. intermittent; 0° to 180° F continuous.
  • Precision Ball Bearings
Double sealed, maintenance free, superior rollability aids manual applications, not recommended if shock loading is prevalent.
  • Tapered Roller Bearings
Best for most severe heavy duty and power-towed applications
  • Tapered Roller Bearing Seals
 
  • Keyways, and/or set screws
For locking wheels on shaft (plain bore).
  • Special Hub Length
Hubs can be cut to provide shorter length, spacer washings furnished to increase length.
  • Available Plain Bore or with roller bearings
 
  • Other sizes are available on special order
 
 
Hamilton is proud to introduce the new Ultralast™ wheel – representing the highest performing urethane we’ve ever offered. The new Ultralast™ wheel possesses “off the chart” performance characteristics— specifically in the areas of thermal retention and rollability. Heat buildup in polyurethane, due to high loads or continuous duty applications, is the most common cause for material breakdown over the life of the wheel. Ultralast™ polyurethane operates much cooler under load and at higher speeds compared to most other urethanes. The result is a simply superior dynamic performance and a longer service life.

Ultralast™ also represents the best rolling polyurethane wheel we’ve ever offered and by a wide margin. For example, the urethane’s rebound test results, which can be a proxy for rollability, measures 110% higher than Duralast®, 60% higher than PolySoft® and 20% higher than Vulkollan®. So the combination of Ultralast™’s very low thermal retention and extremely high rollability characteristics results in an ultra high performance wheel that’s designed to outperform and outlast other polyurethanes in the marketplace.

Hamilton recommends Ultralast™ wheels for continuous duty/power-towed, and higher speed applications on smooth surfaces.

The tables below offer our most popular sizes, yet the new Ultralast™ polyurethane can be molded to Hamilton’s other cast iron, and/or aluminum centers in finished sizes ranging from 3 1/4" to 20" diameter. Consult factory for pricing and availability. Note: Test data illustrates the Ultralast™ wheel dynamics are equivalent to or superior to Vulkollan®. Volkollan® is a registered trademark of Bayer Material Science.

For higher capacities, see our Super Ultralast Wheels.
Ultralast-Polyurethane-Wheel
#W-820-TRB-1/2
Ultralast™
Ultralast™ Series Selection Table
= available for 24 Hour PRONTO® shipmentDimensions in inches
Wheel
DiameterFaceWeight
Lbs.
425
525
628
313
8211
320
10329
12343
Hub
Length
Load
Capacity
Lbs.
Base
Number
3 YR.
This Ultralast™ Caster is backed by Hamilton's Three Year Product Warranty.
Bearing Sizes
2 1/2750W-420-TRB-
1/2---
2 1/21050W-520-TRB-
1/2---
2 1/21200W-620-TRB-
1/23/4--
3 1/22200W-630-TRB-
3/4---
2 1/21500W-820-TRB-
1/23/4--
3 1/22500W-830-TRB-
3/41--
3 1/23000W-1030-TRB-
3/41--
3 1/23500W-1230-TRB-
3/41--
Hub
Length
Load
Capacity
Lbs.
Base
Number
3 YR.
This Ultralast™ Caster is backed by Hamilton's Three Year Product Warranty.
Bearing Sizes
 
---
2 1/21050W-520-TRT-
3/4---
2 1/21200W-620-TRT-
3/4---
3 1/22200W-630-TRT-
3/411-1/4-
2 1/21500W-820-TRT-
3/4---
3 1/22500W-830-TRT-
3/411-1/4-
3 1/23000W-1030-TRT-
3/411-1/4-
3 1/23500W-1230-TRT-
3/411-1/4-