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 |
Frequently Asked Questions
Q: What does the EZ designation on SU 528-EZ mean?
A: EZ likely stands for Easy or simplified installation. The SU 528-EZ wheel has the same 3.25 x 6.375 inch specifications as the base SU 528 but may feature a modified bore design or hub geometry for quicker mounting. Verify the exact bore diameter (1.938 inch) before purchase to ensure compatibility with your electric lift truck axle.
Q: Is SU 528-EZ a wheel only or does it include bearings?
A: SU 528-EZ is the wheel only with press-fit sealed ball bearing installed. It does not include additional hardware or pre-assembled mounting components. If you need a fully assembled ready-to-install package, order SU 528-EZ-A instead.
Q: How is SU 528-EZ different from standard SU 528?
A: Both SU 528-EZ and SU 528 share identical external dimensions: 3.25 inch diameter x 6.375 inch width. The EZ variant may have a different bore tolerance, hub profile, or tread formulation optimized for faster installation or specific truck models. If your current truck uses SU 528, SU 528-EZ is a direct replacement provided bore dimensions match exactly.
Q: Can I mix SU 528-EZ wheels with SU 528 on the same truck?
A: Yes, if all wheels on an axle pair are the same size and your truck architecture supports mixed variants. However, best practice is to replace wheels in sets (typically 4 per truck) to ensure even load distribution and wear patterns. Mixing wheels from different SKU families can cause uneven stress on steering or load-bearing components.
Q: What is the bore depth on SU 528-EZ?
A: The bore depth on SU 528-EZ is 0.812 inch with a bore outside diameter of 2.0467 inch. The inside diameter is 1.938 inch. These tolerances are critical for press-fit installation. If your axle spindle exceeds 2.0467 inch outer diameter, SU 528-EZ will not fit. Measure your current axle before ordering.
Q: Is SU 528-EZ suitable for outdoor use?
A: SU 528-EZ polyurethane tread (Cushothane XL) is suitable for light outdoor warehouse and dock work. It is not designed for heavy outdoor terrain or sustained contact with water, salt, or harsh chemicals. Limit outdoor use to dry conditions under 140 degrees Fahrenheit. Store indoors when not in use. For heavy outdoor duty, consult the manufacturer about alternative tread materials.