| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing capable of reducing the deformation of a cage caused by the centrifugal force while using an inexpensive crown-shaped cage, and capable of being used under high speed rotation. SOLUTION: A rolling element 3 is placed between an inner ring 1 and an outer ring 2, and held by a cage 4. The cage 4 has the shape of a crown, and one side surface of an annular body 6 has a pocket 5 partially opened for holding the rolling element 3 inside. A pitch circular diameter PCD of the pocket 5 of the cage 4 is larger than a center Q of a radial thickness of a circumferential wall cross section of the annular body 6.
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