Product Description
The SU S850-XL is a high-performance polyurethane load wheel designed specifically for electric pallet trucks. Engineered for durability, this wheel features a robust construction ideal for high duty cycle warehouse operations.
Specifications: 3.250 inch diameter x 6.500 inch width (3.250" x 6.500" | 3.25 x 6.5 wheel | 3-1/4 x 6-1/2 | 82.55mm x 165.10mm)
• 97A durometer tread for enhanced grip and wear resistance
• Machined steel core for added strength and stability
• XL3™ bonding technology for maximum durability
This load wheel is perfect for heavy-duty applications, ensuring reliable performance in demanding environments.
Specifications
Material
| Core Material | Machined steel core |
| Bonding Technology | XL3™ proprietary bonding agent |
Part Numbers
| Manufacturer Part Number | SU S850-XL |
| OEM Part Number | S850 |
Frequently Asked Questions
Q: What is the exact wheel size of the SU S850-XL and how does it compare to other variants?
A: The SU S850-XL has a diameter of 3.250 inches and tread width of 6.500 inches (metric: 82.55mm x 165.10mm). This is larger than the SU S850 (3.15 inch diameter) but different from the SU S850 XL (8.25 inch nominal diameter). Do not confuse naming conventions. The SU S850-XL with hyphenation is distinct from SU S850 XL without hyphenation. Always verify dimensions on your truck nameplate before ordering.
Q: Is the SU S850-XL compatible with my electric pallet truck?
A: The SU S850-XL is engineered specifically for electric pallet trucks. Verify that your truck axle accepts a 6.5 inch tread width and 3.25 inch diameter wheel. Check your truck manual or contact the OEM with the serial number. Some trucks have narrower wheel wells or different bearing bore sizes. Installing incompatible wheels will cause rubbing, uneven wear, and handling problems. Always replace all four wheels as a matched set.
Q: What are the durometer and material specifications for the SU S850-XL tread?
A: The SU S850-XL features a 97A durometer polyurethane tread, offering excellent grip and wear resistance. The wheel uses a machined steel core for strength and stability, bonded with XL3 proprietary bonding technology. The 97A durometer is higher hardness than the SU S850 (92A), making the SU S850-XL more resistant to cuts and abrasion. This specification is suitable for high-duty cycle warehouse operations and outdoor use.
Q: How do I diagnose bearing wear in the SU S850-XL?
A: Lift the truck so all wheels clear the ground and spin each wheel by hand. A healthy bearing turns freely and coasts for 30 to 60 seconds. If bearing friction increases suddenly, makes grinding or squealing sounds, or the wheel stops within seconds, the bearing seal is failed. Continued operation will cause the bearing to seize and lock the wheel. Remove and replace the SU S850-XL immediately. Do not attempt to repack or service sealed bearings.
Q: What maintenance schedule should I follow for the SU S850-XL?
A: Inspect wheels weekly for tread damage, flat spots, or chunks missing from the rolling surface. Monthly bearing tests: spin by hand and listen for noise. The sealed bearing requires no greasing or lubrication. Do not wash with high-pressure water or apply harsh solvents. Clean tread with a dry cloth. If tread depth drops below 0.5 inches or bearing noise develops, replace all four wheels to maintain even handling and load distribution.
Q: What is the expected lifespan of the SU S850-XL in high-duty warehouse operations?
A: Under standard warehouse duty, the SU S850-XL tread lasts 3 to 5 years before significant wear. In high-duty cycle operations with frequent starts, stops, and turns, lifespan may reduce to 18 to 36 months. The 97A durometer and XL3 bonding provide superior cut and abrasion resistance compared to standard wheels, extending service life in demanding environments. Replace proactively when tread wears to 0.5 inches or visual damage develops.