| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lubrication structure of an angular contact ball bearing, in which a raceway and a ball can be effectively grease lubricated with a simple constitution. Ž<P>SOLUTION: The angular contact ball bearing 1 is formed by interposing the ball 5 between the raceway surfaces 2a, 3a of an inner ring 2 and an outer ring 3. Out of both side shoulders 3b, 3c of the raceway surface 3a of the outer ring 3 which is the fixed ring, a grease introduction hole 6 extending in the axial direction from an outer ring width surface 3c2 toward the raceway surface 3a is provided in a plurality of positions in the circumferential direction of the shoulder 3c positioned at the front side. A grease reservoir 13 and an oil supply channel 14 which makes the grease reservoir 13 communicate with the grease introduction hole 6 is provided in a seat 12 between the outer rings arranged adjoining to the outer ring width surface 3c2 of the shoulder 3c side having the grease introduction hole 6 in the outer ring 3. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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