Product Description
Load Wheel
Frequently Asked Questions
Q: What does the XL designation indicate on the SU S258-XL load wheel?
A: The XL designation signifies a reinforced load wheel designed for extra-large or extended-duty lift trucks operating at or near maximum load capacity. The XL version typically features a thicker axle boss, larger bearing bore, and enhanced polyurethane compound to handle sustained heavy loads. Do not install the XL wheel on standard-duty trucks; oversizing can cause binding and accelerate failure of non-reinforced steering components.
Q: Is the SU S258-XL compatible with the standard SU S258?
A: No. The XL and standard versions are not interchangeable. The XL wheel has a larger bearing bore and thicker hub structure that will not fit standard axles. Do not attempt to force an XL wheel onto a standard truck or vice versa. This will damage the bearing seat, create dangerous wheel play, and void any warranty. Always verify XL compatibility before ordering.
Q: What is the load rating for the SU S258-XL compared to standard wheels?
A: The SU S258-XL is rated for approximately 20 to 30 percent higher sustained loads than the standard SU S258. Exact load capacity depends on truck frame design and braking system. Always refer to your lift truck nameplate and service manual for maximum load limits. Using an XL wheel on a truck rated for standard wheels does not increase truck load capacity; it only prevents wheel failure.
Q: How do I diagnose if my lift truck requires XL or standard load wheels?
A: Check the truck nameplate for maximum load capacity. If your truck regularly carries loads above 5000 pounds or operates 24 hours per day in demanding material handling environments, XL wheels are recommended. Look at your existing wheels for size markings or part numbers and cross-reference them to your truck model. If uncertain, consult the truck manufacturer or your parts supplier with the model number and serial range.
Q: What maintenance is required for the SU S258-XL?
A: Inspect bearing condition every 400 operating hours; check for noise, play, or heat buildup. Monitor wheel runout monthly and replace if lateral runout exceeds 0.125 inch. The XL wheel is more forgiving of minor misalignment than standard wheels, but never neglect truck alignment maintenance. Grease the bearing every 6 months if the truck operates in humid or dusty environments. Replace the wheel immediately if bearing develops pitting or spalling.