| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling device which has a sufficient function as a rolling device, and an improved abrasion resistance and biological adaptability, and is safe for a human body. SOLUTION: An outer ring 11 and an inner ring 12 forming the roller bearing 10 is made of (α+β) type titanium alloy orβtype titanium alloy in which the content of vanadium is lower than 1.0 wt.%. The surface hardness thereof is Hv400 or higher. A rolling member 13 is made of ceramics and a holder 14 is made of a resin. COPYRIGHT: (C)2004,JPO
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