Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What does the -A suffix mean on Superior load wheel part numbers?
A: The -A designates a complete load wheel assembly. The SU S631-EZ-A includes the polyurethane tread wheel bonded to the steel core, sealed bearings, and all fasteners needed for installation. It is a ready-to-bolt replacement, not a wheel-only component.
Q: Can I install the SU S631-EZ-A on my own, or do I need a technician?
A: Installation is straightforward for trained technicians. Remove the old wheel assembly from the hub, slide the SU S631-EZ-A axle onto the truck spindle or hub, and torque fasteners to the truck manufacturer specification. Do not over-torque; this can distort the wheel bore and cause premature bearing failure.
Q: What is the bearing configuration in the SU S631-EZ-A?
A: The SU S631-EZ-A assembly uses sealed tapered roller or ball bearings depending on the specific fitment. Bearings are pre-lubricated and sealed during manufacturing. Do not disassemble or repack bearings; replace the entire assembly if bearing noise or play develops.
Q: How long does the SU S631-EZ-A wheel last under normal use?
A: With proper maintenance, the SU S631-EZ-A tread lasts 12 to 24 months in typical warehouse service depending on load cycles, floor conditions, and speed. Sealed bearings typically outlast the tread. Replace the wheel when tread wear reaches 25 percent depth or if visible damage occurs.
Q: Can I use the SU S631-EZ-A as a direct replacement for a worn Crown or Toyota wheel?
A: Yes, provided the bore diameter and hub interface match the original. The SU S631-EZ-A uses a standard bore; measure your truck hub to confirm fit. Do not force the assembly onto a non-matching hub, as this can damage bearings and wheel bore.
Q: What is the difference between SU S631-EZ and SU S631-EZ-A?
A: SU S631-EZ is the wheel component alone. SU S631-EZ-A is the complete assembly with bearings and fasteners included. Order the wheel component if you have an existing assembly you want to re-core; order the -A assembly if you need a turnkey replacement.