Product Description
Load Wheel Assembly
Specifications: 6.000 inch diameter x 3.000 inch width (6.000" x 3.000" | 6 x 3 wheel | 6 x 3 | 152.40mm x 76.20mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 6 |
| Inside Diameter | 2.25 |
| Width Side to Side | 3 |
| Tread Profile | 3/8 Radius |
| Bore Depth | 0.78 |
| Bore Outside Diameter | 2.4404 |
Frequently Asked Questions
Q: What is included in the SU S459-XL-A complete assembly?
A: SU S459-XL-A is a turn-key wheel assembly that includes the 6 inch by 3 inch Cushothane XL load wheel, precision-machined steel core, sealed bearings, and retaining hardware. No additional bearing installation or setup is required. Unpack and install directly onto the jack axle shaft as a complete unit.
Q: How do I verify the SU S459-XL-A bearings are properly sealed?
A: Before installation, spin the wheel by hand. It should rotate freely with no grinding sound. There should be no visible grease leakage at the bearing seals. A light resistance to spinning is normal. If you hear grinding, feel drag, or see grease on the rim, the seal is compromised. Do not install a wheel with failed seals; contact the supplier for replacement.
Q: Is the SU S459-XL-A assembly compatible with jacks that originally used standard S459 wheels?
A: Yes. The SU S459-XL-A dimensions and bore specifications match standard S459 assemblies. You can upgrade from standard wheels to SU S459-XL-A without any modification to the jack frame or axles. The Cushothane XL material and quality bearings will improve performance and durability compared to older standard wheels.
Q: What is the maximum load rating for a jack fitted with SU S459-XL-A wheels?
A: Maximum load is determined by the jack frame structure and lifting mechanism, not by the wheels. SU S459-XL-A wheels are rated for jacks up to 6,000 pound capacity. Verify the load capacity of your specific jack model on the manufacturers data plate or documentation. Never exceed the jacks rated capacity regardless of wheel quality.
Q: Can I replace just the wheel on a worn SU S459-XL-A assembly without replacing bearings?
A: If the bearings are still good, you can order the wheel only as SU S459-XL. However, if the wheel is worn enough to require replacement, the bearings may also be near end of life. Most field technicians recommend replacing the entire assembly SU S459-XL-A at the same time to avoid a second downtime event within months.
Q: What is the installation time for SU S459-XL-A and any safety precautions?
A: Installation takes 5 to 10 minutes per wheel. Raise the jack on blocks so wheels clear the ground before beginning. Remove the retaining bolt or snap ring, slide the old assembly off the axle, and slide the new SU S459-XL-A assembly on. Secure the bolt or snap ring and lower the jack slowly to test rolling before operating normally. Never work under a raised jack without blocks supporting the frame.