Product Description
CUP, BEARING
Frequently Asked Questions
Q: What is bearing cup 00591-30371-81 and what is its function?
A: Part 00591-30371-81 is a bearing cup component used in electric lift truck wheel and roller assemblies. The cup is the outer ring that houses the bearing rollers and is secured in the equipment frame. This part is compatible with multiple electric pallet jack and lift truck models from Crown, Toyota, Raymond, and comparable manufacturers.
Q: How do I replace bearing cup 00591-30371-81?
A: To replace the bearing cup, disassemble the wheel or roller assembly and remove the shaft. Use a bearing puller or press to extract the old cup from its housing. Clean the housing bore, apply a light coat of assembly lubricant, and press the new cup in until fully seated. Do not reuse old cups. Consult your equipment service manual for housing dimensions and proper bearing preload.
Q: Should bearing cup 00591-30371-81 be replaced with a matching bearing cone?
A: Yes. For optimal performance and bearing life, always replace bearing cups and cones as matched pairs. Installing a new cup with a worn cone, or vice versa, will cause uneven load distribution, accelerated wear, and early failure. Matching pairs ensure proper preload and longevity.
Q: What signs indicate bearing cup 00591-30371-81 is worn or damaged?
A: Inspect the cup interior surface for spalling, cracking, or scoring patterns. During operation, worn cups produce grinding noise, visible wheel wobble, and excessive axial play. If you observe race damage or the matching cone is worn, replace the cup immediately. Continued use of a damaged cup will destroy the rollers and shaft.
Q: How does proper lubrication extend the life of bearing cup 00591-30371-81?
A: Regular greasing per manufacturer guidelines creates a protective film between the bearing cup and rolling elements, reducing metal-to-metal contact and wear. Under-lubricated bearings generate heat and fail rapidly. Over-lubricated bearings waste grease but cause less damage than under-lubrication. Follow your equipment maintenance schedule and use approved bearing grease.