Long life bearing technology by carbo-nitriding

摘要

This paper presents a technique for curtailing fatigue caused by rolling contact under contaminated lubrication. We have developed a material that maintains high hardness despite containing a large amount of retained austenite. By combining new SAC steel, and carbonitriding heat treatment technologies, we have produced a new bearing material. The key to our success lies in successfully dispersing of a large number of fine carbonitrides. Applications born out of this study include both Super TF Bearings and HI-TF Bearings. These bearings continue to enjoy long life under severe lubrication conditions.