Product Description
Load Wheel Assembly
Specifications: 4.000 inch diameter x 2.500 inch width (4.000" x 2.500" | 4 x 2.5 wheel | 4 x 2-1/2 | 101.60mm x 63.50mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 4 |
| Width Side to Side | 2.5 |
| Tread Profile | 3/8 Radius |
| Bore Depth | 0.591 |
| Hub Width | 2.5 |
| Bore Outside Diameter | 2.0467 |
Frequently Asked Questions
Q: What are the exact dimensions and material specifications for the SU S9143-A load wheel?
A: The SU S9143-A is a 4.000 inch diameter by 2.500 inch width load wheel (101.60mm x 63.50mm). It is manufactured from Cushothane XL polyurethane with a 3/8 radius tread profile. The bore outside diameter is 2.0467 inches with a bore depth of 0.591 inches and hub width of 2.5 inches. This wheel is designed for electric lift truck applications requiring standard duty cycle performance.
Q: Can the SU S9143-A replace other equivalent load wheel models?
A: The SU S9143-A is a direct replacement for standard 4 x 2.5 load wheel applications on electric lift trucks. Always verify the bore diameter, hub width, and mounting configuration on your specific truck model before installation. Check your equipment manual or contact the OEM to confirm compatibility with your machine before ordering.
Q: What failure symptoms indicate a load wheel needs replacement?
A: Replace the SU S9143-A load wheel if you observe flat spotting or coning on the tread, visible cracking or separation between the polyurethane and core, excessive lateral play when the wheel is rotated by hand, or if the truck pulls to one side during operation. These symptoms indicate bond failure or core damage and will worsen quickly under load.
Q: Is the SU S9143-A suitable for wet floors and cold storage environments?
A: The Cushothane XL compound offers good abrasion and wear resistance in standard warehouse conditions. For heavy-duty wet floor or cold storage applications, consider the SU S9143-EZ model, which features a high-traction polyurethane formulation specifically engineered for moisture and low-temperature performance.
Q: What tools and steps are required to replace the SU S9143-A on an electric lift truck?
A: You will need a wheel puller or press, an appropriately sized socket or wrench for hub fasteners, and a jack or lift to raise the truck safely. Secure the truck on a level surface, remove hub fasteners, use the wheel puller to extract the old wheel, inspect the hub bore for damage, press on the new SU S9143-A wheel until fully seated, and reinstall all fasteners to specification. Do not operate the truck until wheels are fully secured.
Q: How long does the SU S9143-A typically last in service?
A: The lifespan of the SU S9143-A depends on load weight, floor conditions, and operating hours. Under normal duty in dry warehouses, expect 2000 to 4000 operating hours before noticeable wear appears. Wet, abrasive, or cold environments accelerate wear. Inspect the wheel every 500 operating hours and replace if tread depth is less than 1/16 inch or if any structural damage is visible.