Product Description
This complete wheel kit includes Ultra-Poly (70D) load wheel assemblies and poly steer wheel assemblies, designed for smooth and reliable operation of your pallet jack. The 70D durometer polyurethane construction ensures durability and non-marking performance, making it ideal for demanding applications without shattering under heavy use. The kit offers easy assembly with all necessary components, providing an efficient solution for those needing a quick replacement.
Compatibility: Fits pallet jacks made by Uline, model H-4123. Alternate model: H4123; H 4123. SKU: GWK-4123-CK
Specifications
Material & Construction
| Load Wheel Material | Ultra-Polyurethane, 70D durometer, non-marking |
| Steer Wheel Material | Polyurethane, non-marking |
| Hardware Material | Grade 8 fasteners |
Part Numbers
| Manufacturer Part Number | GWK-4123-CK |
| OEM Part Number | H-4123 |
| Cross-Reference Part Numbers | Replaces GWK-4123-LW, equivalent to GWK-3762-CK, GWK-3763-CK |
| Compatible Models | Uline H-4123 Manual Pallet Jack |
Performance
| Wheel Hardness | 70D Shore durometer (load wheels) |
Frequently Asked Questions
Q: What does GWK-4123-CK include, and how is it different from the load-wheel-only kit?
A: GWK-4123-CK is a complete wheel kit that includes both load wheel assemblies and steer wheel assemblies, complete with bearings, axles, and fasteners. If you only need to replace load wheels, order GWK-4123-LW instead. The complete kit is appropriate when both wheel types show wear, when you want a full refresh, or when the steer wheels are squeaking or dragging. Verify your Uline H-4123 model number before ordering.
Q: Is GWK-4123-CK compatible with other pallet jack brands, or is it Uline-only?
A: GWK-4123-CK is specifically designed for the Uline H-4123 manual pallet jack. The OEM part number is H-4123. This kit also replaces GWK-4123-LW and is equivalent to GWK-3762-CK and GWK-3763-CK. Before purchasing, verify your jack model number on the nameplate. Do not force-fit this kit to other brands, as axle diameters and wheel hub bores must match exactly.
Q: What is the wheel material difference between load wheels and steer wheels in this kit?
A: Load wheels in GWK-4123-CK are ultra-polyurethane at 70D durometer, non-marking, and designed for high load capacity. Steer wheels are polyurethane and may have a nylon or composite core. This combination is intentional: the harder load wheels handle the bulk of the weight and resist deformation, while softer steer wheels allow for easier directional control and reduce strain on the jack frame during turns. Do not substitute one for the other.
Q: Can I install GWK-4123-CK myself, or do I need a technician?
A: Most users can install GWK-4123-CK with standard hand tools and an axle press (or a rubber mallet and patience). You will need to lift the jack chassis, remove the old wheels and bearings, install new bearings into wheel hubs, slide the wheels onto axles, and secure with fasteners. If you are uncomfortable doing this, contact a local material handling technician. Installation typically takes 1 to 2 hours depending on fastener corrosion.
Q: What is the expected service life of the GWK-4123-CK wheels in typical warehouse use?
A: The 70D ultra-poly load wheels typically last 18 to 36 months in daily heavy warehouse use (8+ hours daily on rough concrete). Steer wheels may require replacement sooner if the jack is steered aggressively or stored outdoors. Lifespan depends on load weight, floor surface, operator technique, and maintenance. Inspect wheels every six months for flat spots, cracks, or bearing play. Proper bearing lubrication extends service life by 25 percent.