Product Description
Bearing
Frequently Asked Questions
Q: What is the AC 4911491 bearing?
A: The AC 4911491 is a replacement bearing for manual pallet jack wheels and lifting mechanisms. This bearing supports load and enables smooth rotation of wheel or lift assembly. It is a critical component for safe and reliable pallet jack operation.
Q: Which manual pallet jacks use the AC 4911491 bearing?
A: The AC 4911491 bearing fits multiple manual pallet jack models from manufacturers including Crown, Toyota, Raymond, Yale, and Jungheinrich. Verify your jack model and bearing bore diameter before ordering to ensure correct fitment.
Q: What is the bore diameter and load rating of the AC 4911491?
A: The AC 4911491 specifications include a specific bore diameter and dynamic load rating. Verify exact dimensions against your pallet jack parts diagram. Incorrect bearing size or load rating will cause misalignment, premature wear, or failure.
Q: When should the AC 4911491 bearing be replaced?
A: Replace the bearing when wheels or lift mechanisms show excessive play, grinding noise, resistance to rotation, or visible damage. Worn bearings increase rolling resistance, make the jack difficult to operate, and create safety hazards.
Q: How long does the AC 4911491 bearing last?
A: Bearing lifespan depends on load, frequency of use, and maintenance. Properly lubricated bearings in light-duty applications may last several years. Heavy use or inadequate lubrication shortens life significantly. Inspect bearings annually and replace if worn.