| 摘要 |
A motor spindle for a hard disk device having a pair of ball bearings each having an inner ring, an outer ring, a plurality of balls, a retainer for slidably holding the balls and having a first seal plate provided with outer and inner edges placed adjacent to the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring, and a second seal plate secured to the inner peripheral surface of the outer ring and having an inner edge placed adjacent to the outer peripheral surface of the inner ring with the first seal plates opposed to each other and with one of the second seal plates faced to a clean space for containing a hard disk.
|
