| 摘要 |
An actuator assembly for a magnetic disk drive having a structure capable of easily removing the imbalance of the actuator assembly. The actuator assembly includes a shaft fixed to a base of the disk drive, a bearing having an inner race fixed to the shaft, a sleeve fixed to an outer race of the bearing, and an actuator arm unit fixed to the sleeve. The sleeve has a side wall formed with a hole opening in a direction of canceling the imbalance of the actuator assembly.
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