| 摘要 |
The magnetic disk device spindle structure according to the present invention includes a hub on which is mounted a magnetic recording medium, a spindle shaft which is a fixed shaft, bearings which are secured to this spindle shaft and which rotatably support the hub, and finally, a film inserted at the contact surfaces of the hub and the bearings. In addition, a plurality of grooves for accommodating the film that are of a depth that is less than the thickness of the film may be provided in the contact surface of the hub that contacts the bearings.
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