| 摘要 |
A spindle motor comprises a stationary member, a rotor rotatably mounted by bearing means to the stationary member for holding a recording disk, a rotor magnet mounted to the rotor, and an armature mounted to the stationary member to seat opposite to the rotor magnet. In particular, the rotor includes a shaft, a hub extending outwardly and radially of the shaft, and a flange provided circumferentially of the hub which are integrally formed from a metal plate by plastic deformation process.
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