The area where the collar comes into contact with the oil seal is processed through "surface grinding" and "surface chromium plating (Cr)" processes.
Advantages: The surface smoothness reaches Ra0.4~Ra0.8, and it is not easy to leak oil when in contact with the oil seal. The surface is plated with chromium (Cr) technology, with a hardness of over HRC48 degrees, ensuring long-term use without wear and tear, and the service life of the oil seal is longer.
Post time: Apr-23-2023