Nidec Corporation

Yoshitsugu Hideshima

Takehito Tamaoka

Kazushi Miura

Mitsuhiro Takemoto

Akinobu Sumiji

Shigeki Horiki

Akio Tatsumi

Katsuki Yamaguchi

A method of manufacturing a bearing mechanism of a motor includes steps a)-e). In step a), a bearing assembly is assembled. In step b), an upper seal gap between an upper thrust portion and an upper hub annular portion is arranged to face downward to increase the width of a gap between an outer tubular portion and a flange portion, or a lower seal gap between the outer tubular portion and a lower hub annular portion is arranged to face downward to increase the width of a gap between the upper thrust portion and the flange portion. In step c), pressure in all gaps is reduced. In step d), lubricating oil is injected into the upper or lower seal gap which faces upward, and a predetermined time or longer is allowed to pass. In step e), pressure is returned to atmospheric pressure.

Method of manufacturing fluid dynamic bearing mechanism, motor, and storage disk drive

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Kyoto, Japan

Yoshitsugu Hideshima