| 摘要 |
A ball bearing includes: an outer ring /1); an inner ring (2) having a ring-shaped member fitted portion (22, 23) that has a step portion (51, 52) that extends generally along a radial direction of the outer ring (2) and an outer peripheral face portion; balls (3) disposed between an inner periphery raceway groove (11) of the outer ring (1) and an outer periphery raceway groove (21) of the inner ring (2); and a ring-shaped lubricant supply member (4, 5) that is fixed to the ring-shaped member fitted portion (22, 23) while being in contact with the step portion (51, 52). |
