| 摘要 |
A motor device, in which decentering during rotation of a disk can be prevented, is provided with a bearing unit including a cylindrical bearing and a flange formed integrally with each other, the upper face of the flange being perpendicular to a rotational shaft. Sizing is performed by using the upper face of the flange as a reference. A spacer made of resin and having the same shape as that of the flange is provided on the upper face of the flange. The spacer has an upper face inclined with respect to the upper face of the flange. A core unit is fixed inclined to the spacer on the upper face thereof, thereby tilting the rotational shaft, whereby the rotational shaft is urged toward one side of a coupling hole.
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