Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What is the difference between the SU 242-A and the SU 2350-A load wheel assemblies?
A: The SU 242-A and SU 2350-A are different part numbers and are not interchangeable. They differ in wheel diameter, width, bore size, or bearing design. Do not use one part number as a substitute for the other. Cross-reference your truck manual or OEM parts diagram to identify the correct assembly for your model. Installing the wrong wheel size will cause uneven load distribution and truck instability.
Q: Is the SU 242-A assembly pre-assembled or does it require bearing installation?
A: The SU 242-A is a complete pre-assembled load wheel unit with tire, hub, and bearing ready to install. You should not need to press bearings or repack grease before installation. Unpack the assembly, inspect for shipping damage, and install directly onto the truck axle. If the assembly rattles or moves excessively, do not use it; contact the supplier for warranty replacement.
Q: How do I diagnose flat-spotting or premature tire wear on the SU 242-A?
A: Flat-spotting indicates the truck was parked under load for an extended period or the truck hydraulics are leaking, causing the load to settle unevenly. Inspect all wheels and tires for wear patterns. If wear is localized to one wheel, the bearing may be binding or the axle may be misaligned. Measure tire depth around the full circumference; if variation exceeds 0.100 inch, alignment or bearing service is needed.
Q: What is the maximum duty cycle for the SU 242-A assembly in continuous operation?
A: Industrial load wheels are designed for intermittent duty, not continuous operation. Typical use is 8 to 10 hours per day with rest periods between shifts. Continuous operation at full load will cause bearing and tire degradation. If your application requires extended run times, confirm thermal limits with Superior. Overheating bearings can fail suddenly, causing load drop.
Q: Can the SU 242-A bearing be lubricated or serviced in the field?
A: If the SU 242-A uses a sealed bearing, field lubrication is not required or recommended; sealed units are packed at the factory. If the bearing is a traditional grease-packed design (open or semi-sealed), it may be relubricated every 12 to 24 months using lithium complex grease. Do not over-grease; excess lubricant causes heat buildup and bearing failure. Consult the Superior datasheet for bearing type and service interval.
Q: What should I do if the SU 242-A assembly fails after 6 months of service?
A: Contact your Superior supplier immediately with the invoice number, serial number if present, and failure description. If the failure is manufacturing defect (bearing rust, hub crack, seal failure), you are likely eligible for warranty replacement within 12 months. Document the failure with photos. If failure is due to impact, overload, or negligent maintenance, warranty may be denied.