Product Description
SU 231-A Load Wheel Assembly for electric lift trucks by Liftsplus.com. Features a 4 inch diameter polyurethane tread (Shore A85), die-cast aluminum hub, double row sealed ball bearing, and rated for 1,000 lbs distributed load. Compatible with select electric pallet jack and stacker models.
Specifications
Material
| Tread Material | Polyurethane, Shore A85 hardness |
| Hub Material | Die-cast aluminum alloy |
| Bearing Material | High carbon steel (SAE 52100) inner and outer race |
Part Numbers
| OEM Part Number | SU 231-A |
| Manufacturer Part Number | SU 231-A |
Performance
| Service Life | Rated for up to 400,000 rolling cycles under specified load |
Frequently Asked Questions
Q: What is the load capacity of the SU 231-A load wheel assembly?
A: The SU 231-A is rated for 1,000 lbs distributed load. This rating assumes proper installation on compatible electric pallet jacks and stackers with the wheel bearing properly sealed and the polyurethane tread inspected for wear. Do not exceed this load rating as it compromises bearing longevity and safety.
Q: Can the SU 231-A wheel assembly be used as a direct replacement for other manufacturer load wheels?
A: The SU 231-A is designed for specific electric lift truck models. Verify your jack model and serial range before purchasing. Cross-reference the hub bore diameter, axle length, and wheel mounting interface. If you need equivalent wheels from other suppliers, confirm the 4 inch diameter, polyurethane Shore A85 tread, and die-cast aluminum hub construction match your equipment.
Q: What bearing type does the SU 231-A use and how long does it last?
A: The SU 231-A features double row sealed ball bearings with high carbon steel (SAE 52100) inner and outer races. The assembly is rated for up to 400,000 rolling cycles under specified load. Actual lifespan depends on maintenance, load consistency, and operating environment. Inspect bearings annually for play or noise; replace if grinding or looseness is detected.
Q: How do I install or replace the SU 231-A load wheel assembly?
A: Remove the jack from service and secure it on level ground. Remove the axle pin or fastener holding the wheel. Slide the old wheel off the axle. Clean the axle shaft of debris or corrosion. Slide the SU 231-A assembly onto the axle, ensuring the hub bore seats fully. Reinstall the axle pin and secure with the locking mechanism. Spin the wheel by hand to verify free rotation before returning to service.
Q: What does polyurethane Shore A85 tread mean and when does it need replacement?
A: Shore A85 indicates the hardness of the polyurethane tread material, providing a balance between durability and grip on various floor surfaces. Replace the wheel when the tread shows visible cracking, chunks missing, or flat wear spots that reduce traction. Tread depth loss of more than 25 percent or audible squeaking indicates replacement is needed.
Q: What maintenance does the SU 231-A wheel assembly require?
A: Monthly: inspect for debris, flat spots, and bearing noise. Quarterly: clean the tread and hub with mild soap and water, then dry completely. Do not expose sealed bearings to high pressure washers. If the wheel is not rotating freely or producing grinding sounds, do not operate the jack; remove and inspect the bearing assembly for contamination or damage. Replace bearings if seized or worn.