ROLLING MEMBER AND ROLLING BEARING

摘要

Each of an outer ring (11), an inner ring (12), and a ball (13) is a rolling contact member formed of a ²-sialon sintered body inexpensive, capable of reliably ensuring sufficient durability, and capable of being used in an application where an imposed load is changed abruptly. The sintered body contains as a main component ²-sialon represented by a compositional formula of Si 6-Z Al Z O Z N 8-Z and satisfying 0.1 ‰¤ z ‰¤ 3.5, and has a remainder formed of an impurity. The rolling contact member has a Young's modulus of 180 GPa or greater but 270 GPa or smaller.