Product Description
Complete replacement wheel kit for Ultra UL5500 manual pallet jack. Features ultra-polyurethane load wheels and steer wheels, precision deep groove ball bearings, factory-compatible hardware, and industry-standard dimensions. Direct fit for Uline SKU GWK-UL5500-CK; cross-references Ultra and other universal wheel kits.
Compatibility: Fits pallet jacks made by Ultra, model UL5500. SKU: GWK-UL5500-CK
Specifications
Material & Construction
| Wheel Construction | Ultra-Polyurethane tread bonded to steel core |
Part Numbers & Compatibility
| Manufacturer Part Number | GWK-UL5500-CK |
| Compatible Model | UL5500 |
Performance
| Hardness Rating | 70 Shore D (Ultra-Poly) |
Tolerance
| Wheel Bore Tolerance | ±0.005 inch |
Frequently Asked Questions
Q: Is GWK-UL5500-CK a complete wheel kit or load wheels only?
A: GWK-UL5500-CK is a complete replacement kit. It includes both ultra-polyurethane load wheels and steer wheels, precision deep groove ball bearings, hardened steel axles, and all factory-compatible hardware. You get everything needed for a full wheel system replacement on the Ultra UL5500.
Q: What is the hardness rating and wheel dimensions for GWK-UL5500-CK?
A: Load wheels are ultra-polyurethane at 70 Shore D hardness with a 3.00 inch diameter by 3.75 inch width. Steer wheels are 7 inches diameter by 2 inches width, also 70 Shore D. Wheel bore tolerance is ±0.005 inch for precise fit. All wheels are bonded to hardened steel cores for durability.
Q: Does GWK-UL5500-CK fit other pallet jack brands besides Ultra UL5500?
A: GWK-UL5500-CK is designed specifically for the Ultra UL5500 model. Always verify your jack model and serial range before ordering. Cross-referencing to other brands requires matching wheel bore diameter, axle spacing, and load capacity specifications. Contact technical support with your model number if unsure about compatibility.
Q: What tools and steps are required to install GWK-UL5500-CK?
A: Installation requires a socket set, bearing puller if replacing worn bearings, and a block to safely support the jack frame. Remove locking pins or cotter pins, slide off old wheel assemblies, clean axles, install new wheels with pre-installed bearings, and re-secure with fasteners. Torque fasteners per Ultra specifications. No modification to the jack frame is needed.
Q: How long does GWK-UL5500-CK typically last under normal warehouse use?
A: Ultra-polyurethane wheels at 70D hardness typically last 2 to 4 years with standard warehouse usage at rated capacity. Lifespan depends on floor surface, load consistency, and maintenance. Inspect wheels quarterly for flat spotting, cracks, or uneven wear. Replace if diameter drops below 2.85 inches or wear is visible on the steel core.
Q: What symptoms indicate GWK-UL5500-CK wheels need replacement?
A: Look for flat spotting on the bottom of load wheels, reduced jack lift height without obstruction, steering pulling to one side, grinding or squealing from wheel bearings, or visible cracks in the polyurethane. Test by rolling the jack slowly—wheels should rotate freely without binding. If any wheel is significantly harder or softer than others, material hardness has degraded and replacement is needed.