Product Description
Caterpillar GWK-NPP60-LW load wheel kit engineered for NPP 60 electric pallet jacks, featuring dual Durarun 95A Shore hardness polyurethane wheel assemblies with precision roller bearings, hardened steel axle shafts, and complete fastener hardware for standard duty applications up to 6 hours daily operation.
Compatibility: Fits pallet jacks made by Caterpillar, model NPP 60. Alternate model: NPP60. SKU: GWK-NPP60-LW
Specifications
Material & Construction
| Wheel Material Composition | polyurethane |
| Durometer Hardness Rating | 95A Shore hardness |
Mechanical Specifications
| Bearing Assembly Type | Precision roller bearings with sealed construction |
Part Numbers & Compatibility
| Manufacturer Part Number | GWK-NPP60-LW |
| Compatible Equipment Model | Caterpillar NPP 60 electric pallet jack |
| Related Upgrade Kit | GWK-NPP60-LW-XL (heavy-duty variant) |
Frequently Asked Questions
Q: What is the difference between the GWK-NPP60-LW and the GWK-NPP60-LW-XL?
A: The standard GWK-NPP60-LW features 95A Shore hardness polyurethane wheels and is rated for standard duty up to 6 hours daily. The GWK-NPP60-LW-XL uses harder 97A polyurethane wheels with steel cores and is designed for high-duty cycle service with extended run times. Choose XL only if your operation exceeds 6 hours daily or involves heavy frequent use.
Q: Does the GWK-NPP60-LW fit both NPP 60 and NPP60 designations?
A: Yes. The GWK-NPP60-LW is compatible with both Caterpillar NPP 60 and NPP60 designations. These refer to the same model with different naming conventions. Verify your jack nameplate to confirm you have an NPP60 variant before installation.
Q: What bearing and axle specifications are in the GWK-NPP60-LW?
A: The GWK-NPP60-LW includes precision roller bearings and hardened steel axle shafts. Roller bearings handle lateral loads better than ball bearings and are typical on heavier electric jacks. The hardened steel axle resists deflection under heavy load and extends kit life.
Q: What symptoms indicate the GWK-NPP60-LW wheels should be replaced?
A: Replace wheels if you notice uneven wear (one wheel worn more than the other), visible flat spots or tread loss, audible grinding or squealing from the wheel area, or if the jack pulls strongly to one side during operation. Minor squeaks often respond to bearing lubrication; persistent noise indicates bearing failure and kit replacement.
Q: Can the standard GWK-NPP60-LW be upgraded to the XL version on an existing NPP60 jack?
A: Yes. The GWK-NPP60-LW-XL uses the same axle geometry and fastener pattern as the standard GWK-NPP60-LW, making it a direct upgrade. If your operation has increased duty requirements or if wheels are wearing faster than expected, upgrading to the XL variant (97A compound) is a plug-and-play replacement.
Q: How long does the standard GWK-NPP60-LW typically last in normal warehouse operation?
A: In standard duty service (up to 6 hours daily on smooth concrete), the 95A polyurethane wheels typically provide 18 to 30 months of service life. Harder surfaces and higher ambient temperatures accelerate wear. Inspect wheels every quarter and plan replacement when tread is visibly flat or pieces are missing.
