Product Description
Load Wheel Assembly
Specifications: 5.000 inch diameter x 4.120 inch width (5.000" x 4.120" | 5 x 4.12 wheel | 5 x 4-1/8 | 127.00mm x 104.65mm)
Specifications
Wheel Dimensions
| Material | |
| Outside Diameter | 5 |
| Inside Diameter | 2.125 |
| Width Side to Side | 4.12 |
| Tread Profile | 3/8 Radius |
| Bore Depth | 0.826 |
| Hub Width | |
| Bore Outside Diameter | 2.4406 |
Frequently Asked Questions
Q: What does the EZ designation mean on the SU S9157-EZ-A wheel?
A: The EZ suffix indicates a high traction polyurethane compound engineered for wet floors and cold storage applications. This is not an ease-of-installation designation. The EZ compound provides superior grip on slippery surfaces, making it ideal for food processing plants, refrigerated warehouses, and facilities with wet cleaning protocols. If your jack operates in standard dry conditions, a standard S9157 may be more cost-effective.
Q: What pallet jack models are compatible with the SU S9157-EZ-A wheel?
A: The SU S9157-EZ-A is a 5.000 inch diameter by 4.120 inch width wheel that fits electric and manual pallet jacks using a 2.125 inch bore axle. Common OEM brands include Crown, Toyota, Raymond, Yale, and Hyster models requiring this wheel size. Always verify your current wheel bore diameter and axle size before ordering. If your jack uses a different bore size (such as 1.625 inch or 2.5 inch), this wheel will not fit without axle modification.
Q: How do I diagnose if my SU S9157-EZ-A wheel is worn and needs replacement?
A: Replace the wheel when you observe flat spots, chunking, or loss of tread compound. In wet or cold storage environments, check every 6 months for accelerated wear. A worn wheel will cause lateral drift, audible rumbling, or reduced traction on slippery floors. If the wheel slips under full load on wet surfaces, the compound has degraded and replacement is required. Do not attempt to machine or resurface these wheels; replacement is the only safe option.
Q: What is the load capacity of the SU S9157-EZ-A wheel?
A: The SU S9157-EZ-A is rated for standard electric pallet truck applications with typical load capacities between 3000 and 5000 lbs per jack, depending on the truck model. The wheel itself is tested for continuous duty cycles in wet and cold environments without loss of traction. Do not exceed the manufacturer rated load for your specific jack model, as the wheel alone does not determine overall truck capacity. Refer to your jack nameplate for maximum load specifications.
Q: Can I replace a standard S9157 wheel with an SU S9157-EZ-A on my electric pallet jack?
A: Yes, the SU S9157-EZ-A is dimensionally interchangeable with standard S9157 wheels. You can upgrade to the EZ compound if you operate in wet or cold storage conditions. However, upgrading all four wheels at the same time is recommended to maintain consistent traction. If only two wheels are replaced with EZ compound, traction imbalance may occur, causing uneven steering response.
Q: What is the typical lifespan of the SU S9157-EZ-A wheel in cold storage?
A: In refrigerated environments with daily use, expect 12 to 24 months of service life before tread degradation requires replacement. Cold temperatures can harden polyurethane, so seasonal inspection is critical in freezer applications. The EZ compound is engineered for this environment and will outlast standard polyurethane in low temperatures. Dry-condition wheels used occasionally in cold storage may show extended lifespan, but regular cold exposure requires the EZ designation.