| 摘要 |
A rotating support apparatus in a disk storage device is provided with a stationary shaft (1), ball bearings (2, 2 min ) rotatably fitted on the stationary shaft, a rotatable member (3, 40) rotatably supported by and on the ball bearings, and buffer rings (8, 8 min ) superimposed between the associated ball bearings and the rotatable member to absorb a thermal deformation of the rotatable member due to a change in a temperature. The buffer rings have a same coefficient of linear expansion as that of the material of which the rotatable member is made, and each of the buffer rings is in contact, at two points with one of the rotatable member or outer race of the ball bearing, and at one point with the other of the rotatable member or outer race of the ball bearing. This allows the buffer ring to flex axially to absorb differential thermal expansion. <IMAGE> |
