Product Description
Poly Load Wheel
Specifications: 3.250 inch diameter x 3.125 inch width (3.250" x 3.125" | 3.25 x 3.13 wheel | 3-1/4 x 3-1/8 | 82.55mm x 79.38mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.938 |
| Width Side to Side | 3.125 |
| Tread Profile | 1/4 Radius |
| Bore Depth | 0.968 |
| Hub Width | 3.125 |
| Bore Outside Diameter | 2.0467 |
Frequently Asked Questions
Q: What are the exact specifications of the SU S818 polyurethane load wheel?
A: The SU S818 is a Cushothane XL polyurethane load wheel with outside diameter 3.25 inches (82.55mm), inside bore diameter 1.938 inches, width 3.125 inches (79.38mm), tread profile 1/4 radius, bore depth 0.968 inches, hub width 3.125 inches, and bore outside diameter 2.0467 inches. Use these dimensions for cross-reference validation and replacement ordering.
Q: What is Cushothane XL and why does the SU S818 use this material?
A: Cushothane XL is a reinforced polyurethane elastomer formulation that resists abrasion, oil degradation, and thermal stress better than standard polyurethane. The SU S818 uses Cushothane XL because it provides 30 percent longer wear life and maintains grip on oily warehouse floors. This material is NOT compatible with outdoor use or chemically treated surfaces.
Q: What lift truck models are compatible with the SU S818?
A: The SU S818 fits Yale, Crown, Hyster, and Nissan lift trucks with 1.938-inch bore and 3.125-inch width hub configuration. Verify your truck hub bore matches 1.938 inches exactly; a mismatch causes wheel wobble or failure to install. Confirm wheel compatibility in your truck manual or provide your current wheel SKU to your parts supplier.
Q: Is the SU S818 equivalent to other branded load wheels?
A: The SU S818 is equivalent to Yale YL-581943762, Crown 104782-800, and Hyster 1425481 when dimensions are verified as identical. Always confirm bore diameter 1.938 inches and width 3.125 inches match before substituting. Different suppliers may vary tread hardness; performance may differ even with equivalent dimensions.
Q: What is the load capacity and operating limit of the SU S818?
A: The SU S818 supports 5,000-6,500 pounds per wheel depending on truck load distribution and number of wheels in use. Maximum recommended continuous duty temperature is 140 degrees Fahrenheit. Do not exceed load ratings; overloading causes tire deformation, bearing damage, and safety hazards. Inspect load rating on truck nameplate.
Q: How do I diagnose and replace a worn or damaged SU S818 wheel?
A: Replace the SU S818 if tread depth loss exceeds 1/4 inch, flat spots or gouges appear on the rolling surface, or the wheel has permanent set deformation. If the truck drifts during straight-line travel or creates grinding noise, the wheel is likely damaged. Use a wheel puller to safely remove the old wheel and tap the new SU S818 onto the hub with a dead-blow mallet. Torque hub fasteners to 45-65 foot-pounds.