Product Description
This complete wheel kit replacement for pallet jacks includes two Nylon Load Roller Assemblies and two Nylon Steer Wheel Assemblies, all equipped with bearings, axles, and fasteners. The robust nylon wheels are rust-resistant and non-marking, making them suitable for cold storage applications and rugged terrain. The kit also features 70D durometer polyurethane wheels for enhanced durability and smooth operation.
Compatibility: Fits pallet jacks made by Mighty Lift, model ML55-II. Alternate model: ML55II; ML55 II. SKU: GWK-BFII-CK-N
Specifications
Material & Construction
| Wheel Construction | Injection-molded nylon core, polyurethane tread |
| Tread Hardness | 70 Shore D |
Part Numbers
| Compatible Models | Mighty Lift ML55-II, Mighty Lift ML55L |
Frequently Asked Questions
Q: What are the advantages of nylon wheels over polyurethane in the GWK-BFII-CK-N kit?
A: Nylon wheels with 70D polyurethane tread provide rust and corrosion resistance, making them ideal for cold storage facilities, outdoor environments, and wet cleaning operations. Nylon does not absorb moisture like rubber and resists chemical attack. The wheels are non-marking and quieter on polished concrete than steel. Trade-off: nylon is slightly more rigid, so ride comfort is comparable to 70D polyurethane but not as smooth as 92A. Cold storage environments below 32 degrees F can make nylon brittle if wheels are not protected from extreme temperature shock. For general-purpose use, stick with polyurethane; for cold storage or high-moisture areas, nylon is the better choice.
Q: Will GWK-BFII-CK-N nylon wheels fit my Mighty Lift ML55 or ML55XL?
A: The GWK-BFII-CK-N is confirmed compatible only with Mighty Lift ML55-II and ML55L Frame models. The kit is not rated for ML55 (original non-II version), ML55XL, or any other brand. Nylon wheel bore and axle length are matched to ML55-II/ML55L specifications. Installing this kit on other models will cause misalignment, bearing play, and potential wheel separation. Always verify your jack nameplate before order confirmation. If your model number is unclear, call our technical line with the serial number and we will validate the fit.
Q: How do I inspect nylon wheels for wear and when should they be replaced?
A: Nylon wheels wear differently than polyurethane. Look for: (1) visible surface cracks or chips in the tread; (2) tread thickness reduced to 1/4 inch or less (use a depth gauge); (3) color change from glossy to dull matte, indicating tread degradation; (4) flat spots or visible load marks on the rolling surface. Nylon wheels in cold storage typically need replacement every 18-30 months with daily use. Spin each wheel by hand; if you hear a clicking or grinding sound, the nylon tread may be separating from the core and replacement is urgent. Replace all four wheels as a set to avoid uneven wear patterns on new wheels.
Q: What installation precautions should I follow for nylon wheel assemblies?
A: Nylon is harder than polyurethane and can be more brittle in cold environments. Installation steps: (1) bring wheels to room temperature if they have been stored below 40 degrees F for more than 2 hours (cold nylon can crack if suddenly loaded); (2) use a hydraulic lift and safety blocks; (3) remove old wheel assemblies and inspect axles for corrosion; (4) if axles show rust pitting, replace them or apply a thin coat of light machine oil; (5) slide on new nylon wheels slowly and smoothly; (6) secure with cotter pins and torque castle nuts to snug (do not over-torque); (7) spin freely by hand before lowering. Do not drop the jack on nylon wheels or subject them to sudden impact during installation or first use.
Q: Can I use GWK-BFII-CK-N wheels outdoors and in below-freezing temperatures?
A: Yes, nylon wheels are suitable for outdoor and cold storage use, but with limits. Below freezing (32 degrees F), nylon becomes more brittle and impact-resistant drops. In cold storage, operate normally but avoid dropping or jamming wheels against obstacles. If wheels are exposed to rapid temperature changes (moving from -10 degrees F storage directly into a warm 70 degrees F area), allow them 30 minutes to acclimate before heavy use to prevent stress cracking. Outdoor use is acceptable, but direct sunlight will fade color over time without affecting performance. In salty coastal environments or chemical-treated outdoor areas, rinse wheels weekly to prevent salt and chemical accumulation in wheel wells.
Q: Are there substitute products or cross-references for GWK-BFII-CK-N?
A: GWK-BFII-CK-N is the primary nylon complete kit for ML55-II/ML55L. For nylon load wheels only, use GWK-BFII-LW-N. For polyurethane versions, use GWK-BFII-CK (70D Ultra-Poly) or consult on 92A availability. There are no direct cross-references to competitor brands; nylon wheels for Yale, Toyota, or Hyster pallet jacks are different bore diameters and axle lengths. If you need only load wheels or only steer wheels in nylon, contact support for kit customization options.
