Product Description
This complete wheel kit includes two Ultra-Poly Load Roller Assemblies (70D) and two Poly Steer Wheel Assemblies, along with necessary bearings, axles, and fasteners for easy installation. Constructed from high-quality materials, the 70D durometer wheels offer enhanced durability and superior rolling efficiency compared to standard 92A wheels, while the non-marking polyurethane steer wheels ensure excellent maneuverability.
Compatibility: Fits pallet jacks made by Mighty Lift, model ML55. SKU: GWK-BF-CK
Specifications
Compatibility
| Compatible Model | Mighty Lift ML55 Manual Pallet Jack |
Installation
| Fastener Compatibility | Fits original ML55 mounting and hardware |
Performance
| Durometer Hardness (Load) | 70D |
Frequently Asked Questions
Q: What is included in the GWK-BF-CK complete wheel kit?
A: GWK-BF-CK includes two Ultra-Poly 70D load roller assemblies, two poly steer wheel assemblies, plus all necessary bearings, axles, and fasteners. This is a complete replacement kit for the Mighty Lift ML55 manual pallet jack, so you do not need to purchase wheels and steer wheels separately. The kit upgrades both your load wheels and steering wheels in a single purchase.
Q: Is GWK-BF-CK compatible with Mighty Lift ML5500 or only ML55?
A: GWK-BF-CK is listed as compatible with Mighty Lift ML55 models. The ML5500 designation may refer to the same truck or a variant; verify your jack nameplate which will specify either ML55 or ML5500. If your nameplate says ML5500, contact parts support with your serial number to confirm fitment. Do not assume compatibility based on similar model numbers; even small frame variations can prevent proper wheel installation.
Q: Why are the load wheels 70D durometer instead of 92A?
A: 70D Ultra-Poly wheels are significantly harder and more durable than 92A standard polyurethane. The 70D rating provides superior wear resistance, reducing wheel replacement frequency on high-use manual jacks. 70D wheels are especially beneficial if you operate on rough concrete, warehouse floors, or dock plates where abrasion is high. The trade-off is slightly reduced traction and increased rolling resistance, requiring slightly more operator effort when pushing the jack. Choose 70D for durability in industrial settings.
Q: How do I install GWK-BF-CK wheels on my ML55?
A: Lower the jack fully and secure it on a work stand. Remove the cotter pins and bolts from each wheel axle. Slide off old wheels and bearings. Clean the axles with a cloth. Install new bearings, then slide on new wheels and tighten fasteners firmly. Verify wheels spin freely without binding. Install both load wheels and steer wheels in the same work session to ensure consistent wear patterns. Do not operate the jack with a mismatched wheel set, such as one old and one new wheel.
Q: What is the load capacity of the ML55 with GWK-BF-CK wheels?
A: Load capacity is determined by your ML55 frame and hydraulic pump, not by the wheels. Most Mighty Lift ML55 models have a 5000-pound capacity. Check your jack nameplate for the exact rating. GWK-BF-CK wheels are rated to support this capacity. Do not exceed the nameplate limit even though the 70D wheels are extremely durable. Overload creates stress on the hydraulic cylinders and frame welds, which are the actual limiting factors.
Q: How long will GWK-BF-CK wheels last?
A: In moderate-duty use on smooth warehouse floors, expect 3 to 4 years. In heavy-duty continuous operation on rough concrete, expect 18 to 30 months. The 70D Ultra-Poly material resists wear significantly better than standard 92A wheels, extending usable life by 50 percent or more. Proper bearing maintenance and axle inspection will maximize wheel life. Replace wheels when they are no longer round, show cracks, or no longer grip the floor effectively.