Product Description
SU 645-A Load Wheel Assembly from Liftsplus.com is engineered for electric lift truck applications. Constructed from solid steel with sealed precision 20 mm bore bearings, the wheel has a 3.00 inch outside diameter and 3.66 inch width. Designed for outrigger leg load support in electric pallet jacks, it features a machined surface and is intended for rigorous material handling environments.
Specifications: 4.000 inch diameter x 3.625 inch width (4.000" x 3.625" | 4 x 3.63 wheel | 4 x 3-5/8 | 101.60mm x 92.07mm)
Specifications
Material & Construction
| Core Material | Solid steel |
| Wheel Construction | Single-piece steel wheel |
| Surface Finish | Machined steel, uncoated |
Part Numbers & Compatibility
| Manufacturer Part Number | SU 645-A |
| OEM Part Number | SU 645 |
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 4 |
| Inside Diameter | 1.875 |
| Width Side to Side | 3.625 |
| Tread Profile | Angle |
| Bore Depth | 0.623 |
| Hub Width | 3.625 |
| Bore Outside Diameter | 2.0467 |
Frequently Asked Questions
Q: What are the exact dimensions of the SU 645?
A: The SU 645 is a 4.00-inch outer diameter wheel with a 3.625-inch tread width and 1.875-inch inner bore diameter. It is designed for outrigger leg or load wheel support in electric pallet jacks and light-duty electric lift trucks from brands like Crown, Toyota, and Raymond.
Q: Is the SU 645 a solid steel wheel?
A: Yes. The SU 645 features a single-piece solid steel wheel with a machined, uncoated steel surface. It is paired with sealed 20mm bore precision bearings. This construction provides rigidity and load capacity for outrigger leg applications where the wheel bears significant side loads.
Q: What is the load rating of the SU 645?
A: Load rating depends on the bearing quality and the lift truck model. The 20mm sealed precision bearings in the SU 645 are rated for medium-duty applications. Contact us with your equipment model and load class to confirm the SU 645 is appropriate for your application.
Q: How do I install the SU 645 on an electric pallet jack?
A: Remove the axle bolt or pin from the outrigger leg. Slide the old wheel off and inspect the axle for damage or debris. Slide the SU 645 onto the clean axle, insert the bolt or pin, and tighten securely. Spin the wheel by hand to verify it rotates freely and does not contact the frame.
Q: Can I replace the bearing in the SU 645 without replacing the wheel?
A: The SU 645 has integrated sealed bearings that are not user-serviceable. If the bearing fails or shows excessive play, the entire wheel assembly must be replaced. Do not attempt to remove or repack the bearings, as this will break the seal and void the warranty.
Q: How long does the SU 645 last in normal warehouse use?
A: The SU 645 typically lasts 24 to 36 months in light to medium-duty warehouse environments. Solid steel wheels wear slowly, but the bearing lifespan is the limiting factor. Higher loads and rough floors reduce this timeframe. Inspect every 6 to 12 months for noise or roughness.