Development of 'SWR' Bearing

摘要

Wear is a serious problem for rolling bearings that are used under extremely low rotation speed, due to insufficient formation of oil film. Self-aligning roller bearings used for continuous casting machines are a typical example of this application, which require prolonged life. We have developed a high wear-resistant SWR(tm) bearing utilizing new materials and heat treatment technology. In addition to wear resistance, SWR(tm) bearings are superior in surface-originated fatigue life. Furthermore, SWR(tm) bearings are superior to conventional (SUJ2) bearings in core toughness, due to the case hardening heat treatment, which is used for this new material.