Product Description
Bearing Cup
Frequently Asked Questions
Q: What is the AC 21009 bearing cup?
A: The AC 21009 is a bearing cup (outer race) used in electric lift truck and pallet jack wheel assemblies. It works with a bearing cone to support the wheel hub under load.
Q: Which equipment uses the AC 21009 bearing cup?
A: The AC 21009 is designed for Allis Chalmers electric lift trucks and pallet jacks. Confirm your specific model and wheel bore diameter before ordering.
Q: What material is the AC 21009 made from?
A: Bearing cups are made from hardened steel to handle radial and axial loads while providing a smooth rolling surface for the bearing cone and ball or roller elements.
Q: When should the AC 21009 bearing cup be replaced?
A: Replace the bearing cup if you hear grinding or squealing from the wheel, notice increased wheel resistance, observe blue discoloration from heat, or detect spalling on the inner race surface during inspection.
Q: Are there cross-reference part numbers for the AC 21009?
A: Cross-reference information for the AC 21009 is not currently available. Use the exact OEM part number AC 21009 when ordering to ensure correct fitment.