Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What does the SU 850-A load wheel assembly include?
A: The SU 850-A is a complete wheel assembly delivered as one unit ready for installation. It includes the SU 850 load wheel, the full axle shaft, sealed or grease-fitting bearings, bearing seats, spacer rings, and retaining nuts or pins. The assembly arrives pre-assembled and pre-aligned. No additional components are required beyond the bolts to mount it to your frame.
Q: Is the SU 850-A compatible with replacement frames from other manufacturers?
A: The SU 850-A assembly is designed for Liftsplus pallet jack and electric lift truck frames. It may be compatible with aftermarket frames if the axle boss spacing, bolt hole diameter, and center-line dimensions match the original specification. Measure the distance between frame axle bosses and compare against the SU 850-A axle length before ordering. Mismatched spacing will cause wheel binding or improper steering. Contact technical support with frame dimensions for compatibility verification.
Q: What is the load rating for the SU 850-A assembly?
A: The SU 850-A assembly is rated for standard warehouse pallet jack and electric truck loads of 2000 to 5000 pounds per wheel, depending on the bearing type and frame design. Do not exceed the rated capacity or premature bearing wear and frame damage will occur. Verify the load rating in your equipment manual as it varies by model year and bearing specification. The assembly is not suitable for heavy industrial applications exceeding 6000 pounds per wheel.
Q: How do I replace the SU 850-A assembly on my truck?
A: Secure the truck on jack stands with the wheel end elevated. Remove the bolts connecting the old assembly to the frame axle bosses. Slide the old assembly out. Clean the frame mounting bosses of debris and corrosion. Position the new SU 850-A assembly aligned with the mounting holes. Insert bolts through the frame into the assembly and tighten in a cross pattern using appropriate wrenches. Do not over-tighten. Verify the wheel spins freely and the assembly does not rock. Lower the truck and test steering before returning to service.
Q: What bearing maintenance is required for the SU 850-A assembly?
A: If the SU 850-A has sealed bearings, no maintenance is required during normal operation. If the assembly has grease fittings, lubricate every 6 months with general-purpose wheel bearing grease using a grease gun. Do not over-grease as excess grease causes heat buildup. Listen for grinding or squeaking sounds which indicate bearing failure. When bearings fail, the entire SU 850-A assembly must be replaced as individual bearing replacement is not field-serviceable.