507221

Frequently Asked Questions

Q: What is the material composition of the 507221 bearing assembly?
A: The 507221 is a sealed ball bearing assembly manufactured from high-carbon chromium steel for the races and ball elements. The sealed design eliminates the need for ongoing lubrication and maintenance while providing reliable dynamic load support in manual pallet jack applications.

Q: What equipment is the 507221 bearing assembly compatible with?
A: The 507221 is an OEM sealed bearing compatible with manual pallet jacks from Crown, Toyota, Yale, Raymond, and other major manufacturers. Before ordering, verify the bearing bore diameter and width match your jack model specifications.

Q: What advantages does sealed bearing design provide in manual pallet jacks?
A: Sealed bearings like the 507221 are maintenance-free, eliminating the need for periodic relubrication. The sealed design protects internal ball elements from dirt, moisture, and debris, extending service life and reducing downtime in warehouse and material handling environments.

Q: How long does a 507221 bearing assembly typically last in service?
A: The 507221 sealed bearing assembly is engineered for extended service life under normal manual pallet jack loads, typically lasting several years of regular warehouse use. Lifespan depends on load cycles, storage conditions, and operating environment. Bearings in cold storage or wet environments may wear faster due to moisture ingress.

Q: Are there cross-reference or alternate part numbers for the 507221?
A: The 507221 is the OEM part number. Cross-referencing is available with other manufacturer equivalents. Contact us with your jack brand and model number for compatible alternatives if 507221 is unavailable.