Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What is the difference between SU 9109-XL-A and SU 9109-XL?
A: SU 9109-XL-A is a variant of the XL wheel assembly. Both share the same extra-large wheel diameter and sealed bearing design. SU 9109-XL-A may have different hub specifications or material grades optimized for specific truck models. Verify with your truck documentation which part number is correct for your equipment to avoid fitment issues.
Q: Is SU 9109-XL-A compatible with electric lift trucks that originally came with SU 9109 wheels?
A: No. SU 9109-XL-A is larger than SU 9109 and will not fit trucks designed for standard wheels. Using an oversized wheel will raise the truck height, affect steering and braking, and may cause frame interference. Only use SU 9109-XL-A on trucks specifically designed or approved by the manufacturer for XL wheels.
Q: What bearing type does SU 9109-XL-A use?
A: SU 9109-XL-A uses double-sealed precision deep groove bearings identical to all other SU 9109 variants. The seals prevent contamination from warehouse dust and moisture. These bearings are not serviceable. If you hear grinding or the wheel becomes difficult to turn, the entire wheel assembly must be replaced. Do not attempt to open the seals or repack bearings.
Q: Can I interchange SU 9109-XL-A wheels between different electric lift trucks?
A: No. Even though multiple truck models may have XL wheel requirements, they may use different axle pin sizes or hub mounting specifications. Always match the part number exactly to your truck make, model, and serial range. Mixing wheel assemblies from different truck designs can result in wobbling, misalignment, or wheel separation during operation.
Q: What is the polyurethane tread wear rate for SU 9109-XL-A in typical warehouse conditions?
A: In typical indoor warehouse conditions with standard load frequency, SU 9109-XL-A tread life is 2 to 4 years. The larger wheel diameter may extend tread life by 10 to 15 percent compared to standard wheels because the load is distributed over a wider contact patch. Outdoor use, heavy pallets, or frequent movement will reduce lifespan to 18 months to 2 years.
Q: How do I verify SU 9109-XL-A is the correct wheel for my truck?
A: Locate your truck serial number, typically found on a plate near the hydraulic pump or battery compartment. Check your truck operator manual or maintenance documentation for the correct wheel part number. Contact the truck manufacturer with your serial number and confirm SU 9109-XL-A is approved. If in doubt, compare the existing wheel diameter on your truck to the specifications before ordering to prevent a costly return.