Single Shield Bearing Assembly for Pallet Jacks

Frequently Asked Questions

Q: What equipment is the ND7506 bearing assembly designed for?
A: The ND7506 is a single-shield bearing assembly used in manual pallet jacks, load wheel assemblies, and lift mechanisms from Crown, Toyota, Raymond, Yale, and similar manufacturers. Verify your jack model falls within the compatible serial range before ordering.

Q: What are the dimensions of the ND7506?
A: Contact our technical team with your equipment model and serial number to confirm the exact bore diameter, outer diameter, and width of the ND7506. Bearing dimensions must match your wheel assembly or pivot point precisely.

Q: How does the single shield affect bearing lifespan?
A: The single shield reduces contamination ingress on one side but leaves the opposite side exposed. This design typically extends bearing life to 18 to 30 months in dry indoor environments. In dusty or wet conditions, lifespan decreases to 6 to 12 months.

Q: Is the ND7506 pre-lubricated or grease-packed?
A: The ND7506 comes pre-lubricated with general-purpose bearing grease. Depending on your application, you may need to relubricate during service. Do not over-grease, as excess lubricant increases friction and heat in pallet jack load wheels.

Q: What causes early failure of the ND7506?
A: Common failure causes include water contamination (especially on the unshielded side), insufficient lubrication, overload beyond the jack capacity, and improper installation alignment. Regular inspection prevents most premature failures.