Abstract: A compressor set which comprises at least two side-channel compressors which are in an axially adjacent arrangement and have in each case a casing comprising at least two casing halves provided on their outer circumference with radially outwardly projecting connecting plates. The connecting plates are joined together by connecting elements which can be introduced into corresponding openings in the connecting plates. The production of such a compressor set and the distribution of the connecting forces are improved in that at least the two casing halves located in the middle of the compressor set are cast in the same manner. Also, the connecting plates provided on the casing halves are designed in such a manner that there is still space on both sides of a connecting element, which can be mounted in the middle of the circumference of the connecting plates, in each case for a further connecting element to be mounted.

Abstract: In a side channel compressor having a housing cover and a bearing arranged at the housing cover, the improvement wherein the compressor is further provided with a separate bearing cap which is fastened to the housing cover and within which is disposed the bearing and with a centering rim on the cover for aligning the cap.

Abstract: An arrangement for fastening the rotor of a side channel compressor on a shaft wherein the rotor includes a hub through which the shaft passes and the arrangement comprises: a first seating area between the rotor hub and the shaft which is sufficiently tight to provide centering of the rotor on the shaft; a second seating area between the hub and shaft which defines a clearance area therebetween sufficiently wide to receive a hardening plastic; and a hardening plastic disposed within the second seating area.