ROLLING MEMBER AND ROLLING BEARING

摘要

This invention provides a rolling member formed of a sinter of a ß sialon, which, despite low cost, can stably ensure satisfactory durability and, at the same time, can be used in applications where the load applied changes rapidly. The rolling member comprises an outer ring (11), an inner ring (12) and a ball (13).The outer ring (11), the inner ring (12) and the ball (13) are formed of a sinter composed mainly of a ß sialon represented by a compositional formula of Si6-zAlzOzN8-z and satisfying 0.1 = z = 3.5 with the balance consisting of impurities and have a Young's modulus of not less than 180 GPa and not more than 270 GPa.