A compressor of centrifugal type comprising: an impeller for compressing air; an air-guide cylinder for housing the impeller and guiding the air; a scroll-chamber frame disposed adjacent to the air-guide cylinder , the scroll-chamber frame forming a scroll chamber for guiding the air having passed through the air-guide cylinder to outside; a first frame disposed adjacent to the scroll-chamber frame ; a first bolt for fastening the scroll-chamber frame and the first frame ; and a spacer disposed between a head portion of the first bolt and the scroll-chamber frame , a second frame disposed adjacent to the scroll-chamber frame ; a second bolt for fastening the scroll-chamber frame and the second frame ; and a clamp configured to nip the scroll-chamber frame and the second frame , wherein the second frame is a bearing frame in which a bearing part for pivotally supporting a rotation shaft of the impeller is disposed, wherein the scroll-chamber frame includes: a scroll-chamber forming portion forming the scroll chamber ; and a flange portion disposed so as to extend outwardly in a radial direction of the impeller from the scroll-chamber forming portion to join the scroll-chamber frame and the bearing frame disposed adjacent to the scroll-chamber frame , and wherein the clamp includes a pressing bolt which applies a pressing force to the bearing frame from an opposite side from the flange portion of the scroll-chamber frame or a pressing force to the flange portion of the scroll-chamber frame from an opposite side from the bearing frame . an impeller for compressing air; an air-guide cylinder for housing the impeller and guiding the air; a scroll-chamber frame disposed adjacent to the air-guide cylinder , the scroll-chamber frame forming a scroll chamber for guiding the air having passed through the air-guide cylinder to outside; a first frame disposed adjacent to the scroll-chamber frame ; a first bolt for fastening the scroll-chamber frame and the first frame ; and a spacer disposed between a head portion of the first bolt and the scroll-chamber frame , a second frame disposed adjacent to the scroll-chamber frame ; a second bolt for fastening the scroll-chamber frame and the second frame ; and a clamp configured to nip the scroll-chamber frame and the second frame , wherein the second frame is a bearing frame in which a bearing part for pivotally supporting a rotation shaft of the impeller is disposed, wherein the scroll-chamber frame includes: a scroll-chamber forming portion forming the scroll chamber ; and a flange portion disposed so as to extend outwardly in a radial direction of the impeller from the scroll-chamber forming portion to join the scroll-chamber frame and the bearing frame disposed adjacent to the scroll-chamber frame , and a scroll-chamber forming portion forming the scroll chamber ; and a flange portion disposed so as to extend outwardly in a radial direction of the impeller from the scroll-chamber forming portion to join the scroll-chamber frame and the bearing frame disposed adjacent to the scroll-chamber frame , and wherein the clamp includes a pressing bolt which applies a pressing force to the bearing frame from an opposite side from the flange portion of the scroll-chamber frame or a pressing force to the flange portion of the scroll-chamber frame from an opposite side from the bearing frame . <EOS>