Product Description
The SU 850-XL load wheel assembly from Liftsplus.com is a polyurethane-tread, steel-core wheel engineered for electric lift trucks and pallet truck applications. This model features a 3.00 inch diameter, 3.66 inch tread width, and 20 mm precision-sealed bearings for durable, long-life service under heavy warehouse use. Designed as a direct replacement for OEM load wheels on many electric lift trucks. No known cross-reference or supersession part numbers are documented for this SKU.
Specifications
Material & Construction
| Wheel Material | Polyurethane bonded to steel core |
| Core Material | High-strength forged steel |
| Finish | Polyurethane tread, unfinished steel core |
Part Numbers
| Manufacturer Part Number | SU 850-XL |
Frequently Asked Questions
Q: What are the specifications for the SU 850-XL load wheel?
A: The SU 850-XL is a heavy-duty load wheel assembly with a 3.00 inch diameter and 3.66 inch tread width. The wheel core is forged high-strength steel with polyurethane tread bonded to the surface. Precision-sealed bearings measure 20 mm and provide long-life service without field lubrication. The assembly is engineered for electric lift trucks and demanding warehouse pallet truck applications with sustained heavy loads.
Q: How does the SU 850-XL bearing specification compare to standard load wheels?
A: The SU 850-XL uses 20 mm precision-sealed bearings, which are larger and more durable than standard 15 mm or 18 mm bearings found on base models. The 20 mm bearing provides higher load capacity, longer operational lifespan, and reduced noise during operation. Sealed construction eliminates the need for field greasing and reduces contamination from warehouse dust or moisture. The bearing type cannot be changed in the field; if bearings fail the entire SU 850-XL assembly must be replaced.
Q: What load capacity does the SU 850-XL assembly support?
A: The SU 850-XL is rated for loads up to 5000 to 6000 pounds per wheel under normal warehouse conditions. The heavy-duty 20 mm bearings and forged steel core provide capacity exceeding standard SU 850 wheels by approximately 20 percent. Load rating is shared equally across all wheels on the frame, so verify total truck load capacity does not exceed the sum of all wheel ratings. Extended periods at maximum load reduce bearing lifespan.
Q: Does the SU 850-XL wheel have any known cross-references or equivalent part numbers?
A: The SU 850-XL is a Liftsplus proprietary assembly design. No documented cross-reference or supersession part numbers are available for this SKU. If you need to source a replacement, order the SU 850-XL directly by exact part number. Do not attempt to substitute with SU 850 or other variants as the larger bearing size and enhanced specifications are not compatible with standard mounting bosses.
Q: What floor conditions are optimal for SU 850-XL wheel performance?
A: The SU 850-XL polyurethane tread performs best on smooth concrete, epoxy-coated, or sealed warehouse floors. Rough or heavily pitted concrete accelerates tread wear and reduces grip. Wet floors reduce wheel grip and increase risk of slipping; dry the floor when possible. Oil or chemical spills do not damage polyurethane like rubber, but floors should be cleaned to prevent slipping. Outdoor use exposes the wheel to UV light and extreme temperatures, which can degrade the polyurethane bond over time.
Q: What diagnostic steps indicate that a SU 850-XL assembly needs replacement?
A: Inspect the polyurethane tread monthly. If tread is worn smooth or shows separation from the steel core, replacement is required. Spin the wheel by hand; if it rotates with grinding sounds or resistance, the 20 mm bearing is failing. Check for visible cracks, chunks missing from the tread, or wheel wobble during operation. If the truck pulls to one side under load or steering becomes sluggish, a wheel may be failing. Do not continue operation with a failed SU 850-XL as instability and safety hazard result.