Product Description
Load Wheel
Frequently Asked Questions
Q: What is the difference between the SU S631-EZ and SU S631-XL?
A: The SU S631-XL uses Cushothane XL polyurethane tread compound, which is more durable and resistant to cuts and abrasion than standard polyurethane. XL material is engineered for high-cycle and high-load applications. Both wheels fit the same bore and hub interface but the XL offers extended tread life in heavy-duty operations.
Q: When should I choose the SU S631-XL over a standard load wheel?
A: Choose the SU S631-XL if your lift truck operates in extreme duty conditions: high-load stacking, frequent turning, rough floors, or chemical exposure. The XL compound resists ozone, oil, and UV degradation. Standard wheels are adequate for light to medium warehouse use.
Q: Can the SU S631-XL be used in wet or oily environments?
A: Yes, Cushothane XL is oil-resistant and suitable for light chemical exposure. However, extended immersion in solvents or fuels may degrade the tread. Rinse wheels with clean water after exposure to harsh chemicals. Verify compatibility with your specific environment before purchase.
Q: What is the load rating for the SU S631-XL?
A: Load capacity is based on wheel diameter, width, core material, and total truck configuration. Consult Superior and truck OEM specifications for exact limits. The SU S631-XL tread material does not increase load capacity; it increases wear life and durability.
Q: How do I install the SU S631-XL on an existing hub?
A: Remove the old wheel from the hub, slide the SU S631-XL onto the spindle or hub axle, and secure with fasteners. Torque bolts to truck OEM specification, typically 35 to 50 foot-pounds depending on fastener size. Verify wheel runout after installation; it should not exceed 0.125 inch.
Q: Is the SU S631-XL compatible with all lift truck models that use the S631 wheel cavity?
A: Yes, the SU S631-XL is a universal replacement for the S631 wheel cavity. Verify your truck hub bore and width specifications match before ordering. Check that fastener holes align and there are no dimensional conflicts with your specific truck model.