Mitsubishi Heavy Industries Marine Machinery & Equipment Co., Ltd.

Yoshikazu Ito

Yukihiro Iwasa

Masato Yamashita

Kenji Yagi

Shingo Kanazawa

Taiji Tezuka

Provided is a supercharge including: an impeller; a scroll casing formed so as to surround the outer circumferential side of the impeller; a bearing casing arranged adjacent to the scroll casing; and coupling part that couples the scroll casing and the bearing casing to each other, the coupling part has a fastening bolt and a fastening bolt, a plurality of through holes are formed spaced apart from each other in the circumferential direction in the bearing casing, the scroll casing and the bearing casing are coupled to each other with a plurality of fastening bolt and a plurality of fastening bolt being inserted in the plurality of through hole, and the fastening bolt has higher tensile strength than the fastening bolt.

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Nagasaki, Japan

Yoshikazu Ito