Product Description
The SU S528-XL is an industrial-grade polyurethane load wheel designed specifically for electric lift trucks. This durable wheel is engineered to withstand demanding warehouse environments, ensuring long service life and reliability.
Specifications: 3.250 inch diameter x 6.375 inch width (3.250" x 6.375" | 3.25 x 6.38 wheel | 3-1/4 x 6.375 | 82.55mm x 161.92mm)
• Cushothane XL high tear-resistance tread for enhanced durability
• Steel hub construction for added strength
• XL3 advanced chemical bonding for superior performance
This load wheel is ideal for high duty cycles, making it a perfect choice for heavy-duty applications in industrial settings.
Specifications
Material
| Polyurethane Hardness | Nominal Shore D 65 |
| Finish | Machined metal, no applied coating specified |
Part Numbers
| Manufacturer Part Number | SU S528-XL |
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.938 |
| Width Side to Side | 6.375 |
| Bore Depth | 0.812 |
| Hub Width | 6.375 |
| Bore Outside Diameter | 2.0467 |
Frequently Asked Questions
Q: What does the XL designation mean on the SU S528-XL wheel?
A: The XL designation indicates the wheel uses Cushothane XL high tear-resistance tread compound. This formulation provides enhanced durability compared to standard Cushothane, offering improved resistance to punctures, cuts, and chemical exposure. The XL grade is engineered for demanding warehouse environments with frequent impact and heavy loads. It provides extended lifespan over standard Cushothane wheels in these applications.
Q: Is the SU S528-XL wheel compatible with the SU S528-XL-A assembly?
A: Yes. The product information confirms that SU S528-XL-A equivalent part number is SU S528-XL. Both are 3.25 x 6.375 inches with Cushothane XL material, 1.938 inch bore, 2.0467 inch bore outside diameter, and 0.812 inch bore depth. The SU S528-XL is a wheel; the SU S528-XL-A is a complete assembly. They use identical tread specifications and can be ordered as equivalents depending on your installation method.
Q: What is the Shore D 65 hardness rating and why does it matter?
A: Shore D 65 measures the tread hardness on the Durometer scale. This rating indicates moderate to firm tread that resists deformation under load while maintaining grip on warehouse floors. Harder tread (higher Shore D) lasts longer but may provide less grip and a rougher ride. Shore D 65 is balanced for electric lift trucks, providing good durability without sacrificing floor compatibility or ride quality.
Q: Can I use the SU S528-XL wheel on the front and rear positions of my lift truck?
A: The SU S528-XL is specifically designed as a load wheel assembly for electric lift trucks. Verify your truck load wheel specification to confirm compatibility with both front and rear mounting. Some trucks use different wheel sizes or specifications for front versus rear. Consult your truck manual for the correct wheel positions. Installing the wrong wheel in the wrong position can cause steering or stability issues.
Q: How does the SU S528-XL perform on wet or oily warehouse floors?
A: The Cushothane XL tread maintains moderate grip on wet or light oily surfaces compared to polyurethane rubber. However, it is not rated for use in environments with standing water or heavy oil saturation. If your warehouse has slippery conditions, clean floors regularly and consider anti-slip floor treatments. Inspect the SU S528-XL more frequently if operating in wet conditions; oil and moisture can accelerate tread degradation.
Q: What is the expected lifespan of the SU S528-XL under heavy-duty warehouse use?
A: The Cushothane XL composition in the SU S528-XL extends service life to 18 to 30 months under continuous heavy warehouse use. With moderate use, lifespan can reach 30 to 36 months. The enhanced tear-resistance delays tread degradation compared to standard wheels. Inspect the wheel monthly for cracks, tread loss, or hub damage. Once tread wear visible wear exceeds 0.15 inches or cracks appear, plan for replacement within the next service cycle.