| 摘要 |
Motor having a rotor magnet, a stator and a bearing mechanism with vibrations and noises suppressed. The greatest common divisor of the number of the magnetic poles of the rotor magnet and the number of the teeth of the stator is larger than the number of drive phases for the stator. Further, the number of the radial dynamic pressure generation grooves or the thrust dynamic pressure generation grooves coincides with none of the divisors and multiples of the number of the magnetic poles of the rotor magnet and the number of the teeth of the stator.
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