| 摘要 |
PROBLEM TO BE SOLVED: To easily feed a lubricant to two contact points positioned on one axial side of a bearing center line on the raceway surface of one of an outer ring and an inner ring. SOLUTION: Balls are brought into contact with the raceway surface 2 of one of the outer ring 1 and the inner ring 3 at two points a, b, and the balls are brought into contact with the other raceway surface 4 at two points c, d. The contact points a, b are positioned on the one axial side of the bearing center line C. The contact points c, d are positioned on the opposite side of the one side. Counter parts 7, 11 are formed on both the outer ring 1 and the inner ring 3 on the axially opposite side of the contact points a, b, c, d. With the raceway surfaces 2, 4 in two-point contact with balls 6, spaces are formed between the portions of the inner and outer rings on the upper side of the bearing center line C, and the outer ring 1 is formed in a separate type. COPYRIGHT: (C)2007,JPO&INPIT
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