| 摘要 |
PROBLEM TO BE SOLVED: To increase mass-productivity and quality by casting a bearing house in a base with a guide hole integrally formed with a plurality of stator salient poles made by sintering iron. SOLUTION: A plurality of stator salient poles 4 are integrally formed on a base 1 by sintering iron. On the rear face 1a of the base 1, a bearing house 6 is formed by aluminum die casting. After forming the bearing house 6, a bearing 8 is inserted into the bearing house 6 through a guide hole from a face 1b of the bearing house 6 where the stator salient poles 4 are formed, in a final process. Due to this structure, the axes of the base 1 and the bearing house 6 are always in conformity with each other and the quality can be kept uniform in mass-production.
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