800021208

Frequently Asked Questions

Q: What does the single shield design mean on bearing assembly 800021208?
A: Single shield design means this bearing has a protective metal shield covering only one side of the rolling elements, leaving the other side open or partially exposed. This configuration reduces friction compared to double-shielded bearings and is used in applications where contamination exposure is moderate and grease retention is less critical.

Q: What manual pallet jack models use SKU 800021208?
A: Bearing assembly 800021208 with single shield construction is used in manual pallet jacks for wheel or pivot locations. This bearing fits various manufacturers including Crown, Toyota, Raymond, and similar brands. Verify your specific equipment model, bearing location, and dimensions before ordering to confirm compatibility.

Q: How is the single shield bearing different from a double-shielded bearing?
A: Single shield (SKU 800021208) has one metal guard reducing friction and allowing better heat dissipation than double-shielded bearings. Double shields offer more contamination protection but increase drag. Use single shield bearings where smooth, low-friction rotation is prioritized and the application has moderate contamination risk.

Q: When should bearing 800021208 be replaced?
A: Replace this bearing assembly when the jack wheel exhibits loose play, grinding or squealing noise during operation, rough rotation, or when the wheel no longer rolls smoothly under load. These symptoms indicate internal races or rolling elements have deteriorated beyond safe operation limits.

Q: What environmental conditions affect the service life of this bearing?
A: Single shield bearings like 800021208 are sensitive to water, ice, and debris ingestion because one side is less protected than fully sealed bearings. Exposure to wet floors, cold storage, or high-contamination areas will significantly reduce service life. Clean equipment regularly and avoid prolonged wet storage to extend bearing durability.