CR 105556

Frequently Asked Questions

Q: What is CR 105556 and where is it used?
A: CR 105556 is an OEM sealed ball bearing manufactured by Crown for manual pallet jacks. It is mounted at the drive end of the hydraulic pump assembly and provides support for the pump shaft under load.

Q: What material is the CR 105556 bearing made from?
A: CR 105556 is manufactured from SAE 52100 bearing-grade chromium steel with precision-ground industrial bearing surfaces. This material provides durability and resistance to wear in hydraulic pump applications.

Q: Which Crown pallet jack models are compatible with CR 105556?
A: CR 105556 is designed for specified Crown manual pallet jack models. Confirm your equipment model and serial number match Crown specifications, as bearing applications vary by model generation and pump assembly type.

Q: Is CR 105556 a sealed bearing?
A: Yes, CR 105556 is a sealed ball bearing, which means it contains lubricant and is protected from contamination. Sealed bearings require no external lubrication and are not user-serviceable; replacement is required when bearing wear occurs.

Q: How long does a CR 105556 bearing typically last in service?
A: Bearing lifespan depends on load, duty cycle, and operating conditions. Sealed ball bearings like CR 105556 typically last thousands of hours in normal pallet jack hydraulic service. When noise or resistance develops in pump operation, bearing replacement is recommended.