| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing including a cage combining a long service life of grease and rotational accuracy. SOLUTION: At least two pockets out of all pockets enclosing rolling elements 1 are formed as inner diameter restricting pockets 5a of the rolling elements, and whirling of the cage is corrected to ensure rotational accuracy. The remaining pockets are formed as outer diameter restricting pockets 5b of the rolling elements, and interference parts between the inner diameter of the cage and the rolling elements are reduced to restrain the service life of grease from being shortened. COPYRIGHT: (C)2006,JPO&NCIPI
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