Product Description
Load Wheel Assembly
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 SU 528-EZ-A include that SU 528-EZ does not?
A: SU 528-EZ-A is a complete pre-assembled load wheel assembly. It includes the wheel with integrated bearing, ready-to-mount hardware, and factory quality control certification. SU 528-EZ is the wheel only. If you need immediate installation without additional sourcing, order SU 528-EZ-A. If you have bearing kits in stock, SU 528-EZ is sufficient.
Q: Can SU 528-EZ-A be installed without tools?
A: No. SU 528-EZ-A is a press-fit assembly and requires a bearing press tool or hydraulic press for proper installation. Do not attempt hand installation as this risks misalignment and bearing damage. A shop press rated for at least 2 tons is recommended. Improper installation will void the warranty and compromise wheel performance.
Q: Is SU 528-EZ-A cross-compatible with SU 528-A?
A: Both SU 528-EZ-A and SU 528-A have identical 3.25 x 6.375 inch specifications and both are pre-assembled. They are interchangeable on electric lift trucks with matching axle spindle dimensions. The primary difference is the EZ variant may have a different hub geometry or bearing retention method. Cross-compatibility depends on exact bore and mounting tolerances; verify with the manufacturer if uncertain.
Q: What is included in the SU 528-EZ-A hardware kit?
A: SU 528-EZ-A includes the load wheel assembly with press-fit sealed ball bearings. Standard hardware typically consists of any retaining components specific to the EZ-A design. Axle spindle bolts and fasteners are usually NOT included. Check the packing slip upon delivery. Contact the supplier if hardware is missing or unclear.
Q: Can I rebuild or re-bore SU 528-EZ-A?
A: No. SU 528-EZ-A is a sealed press-fit assembly. The bearing cannot be removed or replaced without specialized equipment and re-machining the hub. Attempting to disassemble or re-bore the wheel will compromise the bond between the polyurethane tread and steel core, risking tread separation during operation. Replace the entire assembly when the bearing fails or tread wears out.
Q: What is the weight of SU 528-EZ-A?
A: Exact weight for SU 528-EZ-A is not specified in the current documentation. Typical 3.25 x 6.375 inch polyurethane wheels with steel hubs and bearings weigh approximately 8 to 12 pounds. For exact weight specifications, contact the manufacturer. Weight is important for verifying correct shipping and confirming part authenticity upon delivery.