| 摘要 |
A magnet 5 is disposed radially outward to a fitting portion 8. Thereby, an armature 3 to be disposed so as to face the magnet 5 may be arranged radially outward. It is possible to keep a large space for the arrangement of a fluid bearing to be disposed radially inward to the armature, and, as a result, the fluid bearing having a large size may be used. The large sized fluid bearing 40 is used for keeping a high mechanical strength, avoiding a fear that the fluid bearing 40 would be damaged when it receives a shock, and also avoiding the reduction in rotational speed of the magnetic disk 7, the degradation of accuracy in the writing and reading operation of magnetic data and the generation of a noise or a vibration. The fluid bearing 40 is used to reduce a friction even if the motor is rotated at a high speed, which may reduce the power consumption. <IMAGE> |
