Product Description
Load Wheel
Specifications: 4.000 inch diameter x 2.750 inch width (4.000" x 2.750" | 4 x 2.75 wheel | 4 x 2-3/4 | 101.60mm x 69.85mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 4 |
| Inside Diameter | 1.875 |
| Width Side to Side | 2.75 |
| Tread Profile | 1/4 Radius |
| Bore Depth | 0.812 |
| Hub Width | 2.75 |
| Bore Outside Diameter | 2.4404 |
Frequently Asked Questions
Q: What are the exact dimensions of the SU 143-XL load wheel?
A: The SU 143-XL has an outside diameter of 4.000 inches (101.60mm) and a width of 2.750 inches (69.85mm). Inside diameter is 1.875 inches with a bore depth of 0.812 inches. The hub width matches the overall width at 2.75 inches, and the bore outside diameter is 2.4404 inches.
Q: Is the SU 143-XL compatible with Cushothane and polyurethane applications?
A: The SU 143-XL is manufactured from Cushothane XL material, which is a premium elastomer compound. Do not use this wheel in applications requiring standard polyurethane. If you need a polyurethane alternative, check the SU 14x5x11.25-TSW-P series for press-on designs. Always verify material specifications before installation to prevent load failure.
Q: What tread profile does the SU 143-XL have and how does it affect grip?
A: The SU 143-XL features a 1/4 radius tread profile, which provides moderate edge engagement for smooth floor surfaces typical of warehouse and pallet jack applications. This profile is standard for load wheels on electric lift trucks and does not support aggressive traction. Do not use this wheel on inclined or slippery surfaces without additional safety measures.
Q: Can I replace the SU 143-XL wheel without removing the hub assembly?
A: The SU 143-XL is a wheel-only component, not an assembly. Replacement requires removing the axle pin or bolt securing the hub. Use standard wheel pullers if the wheel is press-fit to the bore. Once removed, slide the new wheel onto the hub, align the bore hole, and reinstall the securing pin. Ensure the wheel seats fully against the hub shoulder before operating.
Q: What load capacity can the SU 143-XL handle on a standard pallet jack?
A: Load capacity depends on the complete fork truck assembly and the number of wheels in use. The SU 143-XL is designed for light to medium-duty manual and powered pallet jacks. Do not exceed the manufacturer load rating for your specific jack model. If the wheel shows chunking, cracking, or flat-spotting under normal use, reduce the loaded weight or inspect for bent axles.
Q: How often should the SU 143-XL wheel be inspected or replaced?
A: Inspect wheels monthly for visible wear, flat spots, or tread damage. Replace the SU 143-XL when tread depth is reduced by more than 25 percent, or if the wheel has sustained cuts deeper than 1/4 inch. Replacement interval depends on floor condition and usage frequency. Clean wheels regularly to remove debris that accelerates wear.