Patent Number: 6,250,812

Title: Rolling bearing

Abstract: The present invention provides a rolling bearing having an excellent corrosion resistance and toughness which can fairly operate at a high rotary speed. At least the inner race is formed by a titanium alloy, and the rolling elements are formed by ceramics. Alternatively, at least one of the inner race and the outer race is formed by a .beta. type titanium alloy. The percent cold working of the .beta. type titanium alloy is predetermined to not less than 20% or a range of from 5 to 20%. The cold working is followed by shot peening. Further, the surface hardness Hv is predetermined to not less than 600. The volumetric ratio of residual .beta. phase in the .beta. type titanium alloy is predetermined to a range of from 30 to 80%.

Inventors: Ueda; Kouji (Kanagawa, JP), Ohori; Manabu (Kanagawa, JP)

Assignee: NSK Ltd.

International Classification: F16C 33/30 (20060101); F16C 019/06 ()

Expiration Date: 06/26/2018