| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotating member and a rotary machine designed for easy thermal shrink fit and thermal expansion release.SOLUTION: An impeller (rotating member) 2A of a centrifugal compressor (rotary machine) 1A attached to a rotary shaft 3 by thermal shrink fit, includes an impeller body (member body) which has a throughhole 17 in which the rotary shaft 3 is inserted and a grip part 15 having an uneven outer peripheral surface 15b, of which a part in a direction of an axial line P fits the rotary shaft 3 by thermal shrink fit. A connection part 14 connected to the grip part 15 at one side P1 in the direction of the axial line P, has a cross-sectional area perpendicular to the direction of the axial line P smaller than a cross-sectional area of the grip part 15. |
