Product Description
Cup, bearing
Frequently Asked Questions
Q: What manual pallet jack models use bearing cup 447-520?
A: Bearing cup 447-520 is compatible with manual pallet jacks from Crown, Yale, Raymond, and similar manufacturers. Confirm your jack model against load wheel specifications, as bearing cups vary by axle diameter and bearing type.
Q: What dimensions should I verify before ordering the 447-520?
A: Verify the inner bore diameter, outer diameter, and cup depth match your existing bearing assembly. Mismatched dimensions will cause binding or excessive play. Measure the axle diameter and bearing cartridge size on your jack to confirm fit.
Q: How often should the bearing cup be serviced or replaced?
A: Under normal warehouse use, a bearing cup lasts 2 to 4 years. Inspect annually for spalling, pitting, or discoloration inside the cup. If greasing intervals are missed or the cup shows wear, replace it to prevent load wheel failure.
Q: What causes a bearing cup to fail prematurely?
A: Common causes include insufficient lubrication, contamination from dirt or moisture, overloading beyond jack capacity, and corrosion in wet environments. Proper maintenance and storage in dry conditions extend cup life significantly.
Q: Is bearing cup 447-520 available under other part numbers?
A: Cross-references exist across brands. Provide your pallet jack manufacturer and model for verified compatibility and any alternate part numbers we stock.