Product Description
BEARING
Frequently Asked Questions
Q: What is the bore diameter and overall size of the ME BM4-21 bearing?
A: The ME BM4-21 is a precision ball bearing for manual pallet jack load wheels. Request the detailed specification sheet for exact bore diameter, outside diameter, and width measurements. These dimensions determine wheel mounting fit and load capacity.
Q: Which manual pallet jack models is the ME BM4-21 compatible with?
A: The ME BM4-21 fits standard load wheel applications on manual pallet jacks from Crown, Toyota, Raymond, Yale, and other major OEMs. Confirm your equipment model and wheel diameter to verify bearing cavity dimensions match before ordering.
Q: What material is the ME BM4-21 bearing constructed from?
A: The ME BM4-21 is made from high carbon chromium steel (SAE 52100 or equivalent) with sealed or shielded raceway protection. Steel hardness and seal type determine corrosion resistance and bearing life in wet or cold storage environments.
Q: How long will the ME BM4-21 bearing last under normal use?
A: Service life depends on load per bearing, operating environment, and maintenance. Under typical warehouse conditions with proper wheel lubrication, expect 2-5 years before noise or grinding indicates wear. Bearings in wet or unheated facilities may need replacement sooner.
Q: Does the ME BM4-21 come with seals or shields?
A: The ME BM4-21 is available with rubber seals or metal shields. Sealed bearings offer better protection against moisture and debris, making them preferable for wet environments. Confirm seal type in the product specification before ordering.