Single Shield Bearing Assembly Pallet Jacks
MR305SF
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Reference Diagrams
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Product Description
BEARING assembly (SINGLE SHIELD)
Frequently Asked Questions
Q: What is MR305SF and what does it do?
A: MR305SF is a ball bearing assembly with single shield protection. It is used in manual pallet jacks and material handling equipment to support axle shafts, wheels, and rotating load-bearing components under dynamic load.
Q: What does the single shield design mean for MR305SF?
A: Single shield means the MR305SF bearing has one metal cover on the outer race perimeter. This design provides protection from large contaminants and splash while remaining cleaner-running than sealed bearings. Single shield bearings are standard on manual pallet jacks and require occasional cleaning and regreasing for optimal performance.
Q: What equipment types use MR305SF bearings?
A: MR305SF is specified for manual pallet jack wheel axles, scissor lift mast support points, and other material handling equipment requiring standard metric ball bearings. Verify bearing bore diameter and outer diameter match your equipment specifications before ordering.
Q: How often does MR305SF need regreasing?
A: Maintenance intervals depend on operating conditions and load. Under normal warehouse conditions, regreasing every 6 to 12 months is typical for manual pallet jacks. High-use equipment or outdoor storage may require more frequent maintenance. Inspect for noise or resistance during wheel rotation as an indicator that regreasing is needed.
Q: What bearing material is MR305SF constructed from?
A: MR305SF is a standard metric ball bearing assembly with steel races and hardened steel rolling balls. The single metal shield is typically stamped steel. This construction provides reliable load support and durability for material handling applications under continuous use.
Q: Can I replace MR305SF with a sealed bearing?
A: Sealed bearings and single shield bearings have different outer dimensions and mounting specifications. Do not substitute without verifying bore size, outer diameter, and axle mounting compatibility. Using an incompatible bearing may cause wheel wobble, improper load distribution, or binding.
