Product Description
LOAD WHEEL
Specifications: 3.250 inch diameter x 6.375 inch width (3.250" x 6.375" | 3.25 x 6.38 wheel | 3-1/4 x 6-3/8 | 82.55mm x 161.92mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.938 |
| Width Side to Side | 6.375 |
| Bore Depth | 0.812 |
| Hub Width | 6.375 |
| Bore Outside Diameter | 2.0467 |
| Tread Profile |
Frequently Asked Questions
Q: What is the difference between the SU S528-EZ wheel and the SU S528-EZ-A assembly?
A: The SU S528-EZ is a wheel-only product; the tread and inner bore are pre-molded, but it does not include a pre-installed hub or assembly backing. The SU S528-EZ-A is a complete load wheel assembly with the wheel pre-mounted on a hub. If your truck requires a wheel-only replacement, order the SU S528-EZ. If you need a ready-to-install assembly, order the SU S528-EZ-A. Both share identical 3.25 x 6.375 inch dimensions and Cushothane XL material.
Q: Can I install the SU S528-EZ wheel onto my existing hub?
A: Yes, the SU S528-EZ can be installed on a compatible hub if the bore matches 1.938 inch inside diameter and 2.0467 inch outside diameter. The bore depth must be 0.812 inches. Press-fit or bolt installation depends on your hub design. If the bore is scored or enlarged beyond 2.047 inches, a new hub or shim may be required. Do not force a mismatched wheel onto a hub; this causes cracking and failure.
Q: How do I confirm the SU S528-EZ is the correct replacement for my truck?
A: Measure the worn wheel diameter and width with calipers. It should be approximately 3.25 inches diameter and 6.375 inches width. Check the bore by removing a wheel and measuring the inside hole; it should be 1.938 inches. Verify the bore depth with a ruler inserted into the bore; it should be 0.812 inches. If all measurements match and the truck is an electric lift truck, the SU S528-EZ is correct.
Q: What floor conditions is the SU S528-EZ wheel rated for?
A: The Cushothane XL tread is designed for hard, smooth warehouse floors such as concrete and tile. It provides good grip and durability on flat surfaces. Do not use on outdoor asphalt or rough uneven surfaces; this accelerates wear and can cause uneven tread degradation. For outdoor or rough surfaces, consult the manufacturer for alternative wheel compounds.
Q: How long does the SU S528-EZ wheel typically last?
A: Under normal warehouse use, the SU S528-EZ provides 12 to 24 months of service before tread wear becomes excessive. Frequent use on hard floors with high loads will reduce lifespan to 10 to 14 months. Light intermittent use can extend lifespan to 24 to 30 months. Inspect for cracks or missing tread chunks; once visible tread loss exceeds 0.125 inches, replace the wheel immediately.
Q: Is the SU S528-EZ equivalent to any other brand wheel?
A: The SU S528-EZ shares identical specifications with other Cushothane XL 3.25 x 6.375 inch wheels from different manufacturers that use metric 82.55mm x 161.92mm dimensions. Cross-reference by bore diameter and width, not brand name. If another brand wheel has 1.938 inch bore and 6.375 inch width, it is likely compatible, but verify bore depth and outside diameter before ordering to avoid fitment issues.