Product Description
Load Wheel Assembly
Specifications: 3.250 inch diameter x 6.250 inch width (3.250" x 6.250" | 3.25 x 6.25 wheel | 3-1/4 x 6-1/4 | 82.55mm x 158.75mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.938 |
| Width Side to Side | 6.25 |
| Bore Depth | 0.812 |
| Hub Width | 6.25 |
| Bore Outside Diameter | 2.0467 |
| Tread Profile |
Frequently Asked Questions
Q: What is included in the SU S534-A load wheel assembly?
A: The SU S534-A is a complete wheel assembly with the Cushothane XL wheel (3.25 x 6.25 inch), pre-installed bearings, and ready-to-mount axle hardware. You do not need to remove and reinstall bearings. This assembly goes straight onto your truck hub.
Q: Can I use the SU S534-A as a direct replacement for my current wheel assembly?
A: Yes, if your current assembly is also 3.25 x 6.25 inches with a 2.0467 inch bore. Verify the hub width (6.25 inches) and bore specifications before purchasing. Measure your existing wheel assembly bore outside diameter and compare it to the specification sheet.
Q: How do I install the SU S534-A assembly?
A: Installation is plug-and-play: remove the axle nut or retaining hardware, slide off the old assembly, and slide the SU S534-A onto the axle. Reinstall the retaining hardware and torque to the manufacturer specification (typically 40 to 60 foot-pounds depending on truck model). Do not over-tighten or the bearings will bind.
Q: What is the difference between SU S534 and SU S534-A?
A: SU S534 is the wheel only; you must remove the old bearing and axle hardware and install new bearings. SU S534-A is the complete assembly with bearings already installed. Use SU S534-A for faster replacement and if you do not have bearing installation tools.
Q: Do I need grease fittings on the SU S534-A bearings?
A: The SU S534-A ships with sealed pre-lubricated bearings and does not require regular greasing. Check your truck manual; some models have grease fittings on the axle. If your truck has fittings, grease the axle per the manufacturer schedule, typically every 500 to 1000 operating hours.
Q: What maintenance is required for the SU S534-A?
A: Inspect the wheel for cracks, flat spots, or uneven wear every 250 operating hours. Check the axle nut for looseness; a loose assembly causes steering drift and accelerates bearing wear. If steering becomes stiff or the wheel does not spin freely after installation, remove and re-inspect for bearing issues or axle misalignment.