Product Description
POLY LOAD WHEEL,97A
Frequently Asked Questions
Q: What does the 97A polyurethane rating mean for the SU S250-XL?
A: 97A is the durometer hardness of the polyurethane tread. This is a medium-hard compound that balances load carrying with floor grip on wet concrete. Higher hardness (98-99A) reduces friction and lifespan. Lower hardness (95-96A) increases traction but wears faster. The 97A SU S250-XL is optimized for most warehouse and dock environments.
Q: Can I use the SU S250-XL on my existing truck if it currently has rubber wheels?
A: Yes, the SU S250-XL can replace standard rubber wheels on most electric lift trucks. The XL designation indicates it has the same 6-inch diameter and 1-inch bore as standard wheels. However, polyurethane wheels are harder and may reduce floor grip on wet epoxy or oily floors. Test on one wheel first. Do not mix polyurethane and rubber wheels on the same truck as uneven wear will result.
Q: How does the SU S250-XL lifespan compare to rubber wheels?
A: Polyurethane wheels like the SU S250-XL typically last 40-60 percent longer than rubber wheels in normal warehouse use. Expected lifespan is 5-7 years versus 3-4 years for rubber. Polyurethane does not dry-rot or absorb moisture, making it better for damp environments. Cost per year of use is lower despite higher initial price.
Q: What surfaces are not suitable for the SU S250-XL polyurethane wheel?
A: Avoid using the SU S250-XL on outdoor concrete, gravel, or extremely cold floors below 10F. Polyurethane becomes brittle in extreme cold and will crack. On outdoor wet concrete, the hard tread provides less grip than rubber and may cause slipping under load. If your operation includes these conditions, stick with rubber or cross-link polyurethane alternatives.
Q: Is the SU S250-XL available as a wheel-only or only as an assembly?
A: The SU S250-XL is available as a wheel-only product for retrofit onto existing assemblies. If you need bearings and seals, order the SU S250-A assembly instead. Wheel-only replacement is faster if your bearings are still good. Measure your bore before ordering to confirm 1-inch size. Non-standard bores require special order at 40 percent premium.