| 摘要 |
PURPOSE:To reduce a part necessitating cleanness upon assembling a bearring, by a method wherein a rotary unit is assembled without extracting a shaft from a cylindrical hole after the shaft is inserted into the cylindrical hole of a bearing member. CONSTITUTION:A rotor 43, whose diameter of inner peripheral surface is larger than a bearing member 1, is attached to a rotor supporting member 41 while a stator 39, whose diameter of inner peripheral surface is larger than the bearing member 1, is attached to a stator supporting member 35, therefore, a rotary unit can be assembled without extracting a shaft body 21 from a cylindrical hole 7 after the shaft body 21 is inserted into the cylindrical hole 7 of the bearing member. Accordingly, it is enough by securing the cleanness of the shaft body 21 and the bearing member 1 upon inserting the shaft body 21 into the cylindrical hole 7, therefore, the number of parts necessitating the cleanness may be reduced and the sufficient cleanness may be secured upon inserting the shaft body 21 into the cylindrical hole 7.
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