Product Description
Cup, bearing
Frequently Asked Questions
Q: What is the purpose of SKU 55558800?
A: SKU 55558800 is a bearing cup component that pairs with a bearing cone to form a complete ball bearing assembly in manual pallet jack load wheels.
Q: What pallet jack models use this bearing cup?
A: This bearing cup is designed for manual pallet jacks from Crown, Toyota, Raymond, Yale, Hyster, and comparable OEM manufacturers. Confirm your wheel hub bore size and outer diameter match this part.
Q: What is the material and hardness specification?
A: This bearing cup is manufactured from hardened steel with a minimum Rockwell hardness of 58 HRc to withstand continuous load cycles and provide a smooth raceway surface for ball bearings.
Q: Must the cup be replaced with the cone?
A: Yes. The cup and cone are precision-matched bearing components. Always replace both together to maintain proper bearing clearance, alignment, and load distribution. Do not reuse old cups with new cones.
Q: What are symptoms of a worn bearing cup?
A: Worn cups cause rough wheel rotation, grinding or clicking sounds during operation, visible damage to the raceway surface, or uneven wear patterns on load wheels. Replace the complete bearing assembly if detected.