BEARING PART AND ROLLING BEARING

摘要

PROBLEM TO BE SOLVED: To provide a bearing part composed of a β sialon (silicon aluminum oxynitride) sintered body usable for use where an applied load suddenly changes while securing sufficient durability stably, though at low cost, and a rolling bearing having the bearing part.

SOLUTION: At least one of an outer race 11, an inner race 12 and a ball 13 for constituting a deep groove ball bearing 1, is constituted of the sintered body expressed by a composition formula of Si6-ZAlZOZN8-Z, containing βsialon as main component, satisfying 0.5≤z≤3.0, and a residual part of an impurity.

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