| 摘要 |
In a magnetic disk drive having a magnetic circuit for moving a magnetic head by driving an actuator having the magnetic head mounted thereon, to a target track, and a base having a height criterion member for carrying out positioning in a height direction of the magnetic circuit as a result of the magnetic circuit being fixed thereto, wherein in a condition in which the magnetic circuit is fixed to the height criterion member, a space is provided between the base and a bottom surface, a spring member is provided for applying force to the magnetic circuit in such a direction that the magnetic circuit is apart from the bottom surface.
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