| 摘要 |
PURPOSE: A spindle motor is provided to leave a deflection in an inside diameter on a combining unit of clamping device and grout a glue on an inner circumference of combining aperture of big inside diameter. CONSTITUTION: A rotor comprises a rotary shaft(151) and rotor York(153). The rotor York is rotated into one body with the rotation axis. A disc(50) is loaded in the rotor York. The center side of a clamping device(200) is combined to the rotor. A clamping device supports the disc. A combining unit of the clamping device which combined with the rotor has the difference of a radius. The combing unit comprises an indentation area and non indentation area. The rotor is indented to the indentation area. The rotor is indented to the non indentation area.
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