Panasonic Intellectual Property Management Co., Ltd.

Yoko Sugamoto

Ko Inagaki

Akira Nakano

Masaru Matsui

Fuminori Sakima

Provided is a reciprocating compressor having a structure in which friction losses between a shaft and a bearing can be reduced without impairing the ability of the bearing to support the shaft. A reciprocating compressor () includes a cylinder (), a piston (), a connecting rod (), a shaft (), and a bearing (). The shaft () has a journal portion () as a portion covered by the bearing (). The journal portion () has a first journal portion () located closer to the connecting rod () with respect to a midpoint M of the journal portion () in a direction parallel to a rotational axis and a second journal portion () located farther from the connecting rod () with respect to the midpoint M. The bearing () has a first sliding portion () for supporting the first journal portion () and a second sliding portion () for supporting the second journal portion (). The first sliding portion () has a first recessed portion () in at least one range selected from a range of 0&#xb0; to 180&#xb0; and a range of 270&#xb0; to 360&#xb0; in a rotational direction of the shaft () from a reference position.

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Osaka, Japan

Yoko Sugamoto