Product Description
This load wheel kit features high-quality nylon load roller assemblies designed for the Mighty Lift ML55-II and ML55L Frame, providing durable functionality with included bearings, axles, and fasteners. The wheels are constructed with 70D durometer polyurethane, offering resistance to rust and corrosion, making them ideal for cold storage environments while ensuring a quiet and smooth operation without floor damage.
Compatibility: Fits pallet jacks made by Mighty Lift, model ML55-II & ML55L Frame. SKU: GWK-BFII-LW-N
Specifications
Material
| Wheel Core Material | Polyamide (nylon) composite core |
| Bearing Housing Material | Polyamide (integral) |
| Floor Interaction | Non-marking, suitable for finished floors |
Part Numbers
| Compatible Models | Mighty Lift ML55-II, ML55L Frame |
Frequently Asked Questions
Q: What makes GWK-BFII-LW-N load wheels different from GWK-BFII-LW, and when should I choose nylon?
A: GWK-BFII-LW-N uses a polyamide (nylon) composite core with 70D polyurethane tread, while GWK-BFII-LW uses solid 70D Ultra-Polyurethane. The nylon core provides rust and corrosion resistance, making it ideal for cold storage (below freezing), high-moisture areas, and outdoor environments with salt or chemicals. Non-marking capability matches GWK-BFII-LW. Trade-off: nylon is slightly more rigid and can become brittle in extreme cold. For general warehouse use, GWK-BFII-LW is sufficient. For cold storage facilities or wet cleaning areas, GWK-BFII-LW-N is the better choice due to rust resistance.
Q: Will GWK-BFII-LW-N fit ML55-II and ML55L pallet jacks, and is it compatible with other brands?
A: GWK-BFII-LW-N is designed only for Mighty Lift ML55-II and ML55L Frame models. Bore diameter is 0.75 inches and axle length is matched to ML55 series specifications. Do not attempt to install on ML55 (original non-II), ML55XL, Yale, Toyota, Hyster, Clark, or other brands. Nylon wheel bore and axle fitment differ across manufacturers. Forcing incompatible wheels will cause binding, bearing failure, and unsafe operation. Always verify your jack model number before ordering. If you have an ML55 but are unsure if it is ML55-II or original ML55, check the nameplate or contact support with the serial number.
Q: How do I maintain and inspect nylon load wheels for wear, and what is the expected lifespan?
A: Expected lifespan in cold storage with daily use is 18-30 months; in general warehouse use, 2-3 years. Inspection steps: (1) visually check for surface cracks, chips, or color change from glossy to dull; (2) measure tread thickness with a depth gauge; if reduced to 1/4 inch or less, schedule replacement; (3) spin wheels by hand and listen for grinding or clicking, which signals internal wear; (4) check for flat spots or load marks on the rolling surface. Maintenance: rinse wheels weekly if exposed to salt, chemicals, or contaminated fluids. Inspect wheel wells for debris and clean with compressed air. In cold storage, allow wheels 15-20 minutes to acclimate to room temperature if moving the jack to a warm area, to prevent stress cracking from rapid temperature change. Replace both load wheels as a matched pair when either shows significant wear.
Q: What is the correct installation procedure for GWK-BFII-LW-N nylon load wheel assemblies?
A: Installation: (1) raise the pallet jack on a lift or secure it with safety blocks so the frame cannot fall; (2) remove cotter pins and castle nuts from both load wheel axles; (3) slide off old wheel assemblies; (4) inspect axles for corrosion, rust pitting, or scoring; if corroded, gently clean with a wire brush or replace axles if pitting is deep; (5) if wheels have been stored in cold conditions, allow them to warm to room temperature before installation (at least 30 minutes); (6) slowly and smoothly slide new nylon wheel assemblies onto axles, ensuring proper seating; (7) install new cotter pins and torque castle nuts snug but not over-tight (excessive torque can crack nylon); (8) spin each wheel by hand to confirm free rolling with no drag, grinding, or noise. Installation typically takes 40-50 minutes. Do not lower the jack until wheels rotate smoothly and freely.
Q: What are the operating limits and environmental conditions for GWK-BFII-LW-N?
A: Load capacity is rated to the ML55-II/ML55L frame maximum of 5,500 lbs; do not exceed. Operating temperature range is -10 degrees F to 140 degrees F. However, below 0 degrees F, nylon becomes more brittle and impact-prone. Wheel material is polyamide (nylon) composite core with 70D Shore D polyurethane tread. Rust and corrosion resistance is excellent, making these wheels ideal for cold storage, outdoor use, and chemical-exposure areas. Floor interaction is non-marking on finished floors and polished concrete. Suitable for wet or damp environments. Do not subject nylon wheels to sudden temperature shocks or impacts in extreme cold. If storing outdoors in winter, cover the jack or allow wheels to warm indoors before use.
Q: What diagnostic symptoms indicate GWK-BFII-LW-N wheels need immediate replacement?
A: Stop using the jack immediately if you observe: (1) visible cracks, splits, or chunks missing from the nylon core or tread; (2) flat spots or permanent load marks on wheels; (3) wheels are dull and worn smooth, indicating tread is gone; (4) grinding, clicking, or squealing during operation; (5) wheels do not spin freely by hand and you feel resistance or drag; (6) pallet jack pulls to one side with no load or balanced load. These symptoms indicate bearing wear, tread separation, or nylon core damage. Do not attempt repair. Contact our parts team immediately with your model number and we will expedite replacement wheels. Continued operation on damaged wheels risks load spill, operator injury, or frame damage.