Bearingless generator and assembling method thereof

The invention discloses a bearingless generator and an assembling method thereof. The bearingless generator comprises a rotor, a machine base arranged on the outer side of the rotor in a sleeving mode, end covers connected to the left side and the right side of the machine base, sealing rings connected with the outer side walls of the end covers, and supporting assemblies installed on the outer side walls of the end covers. The supporting assembly comprises two supporting frames welded to the end cover and a supporting ring installed on the tops of the supporting frames and used for supporting the rotor. The position of the supporting ring is adjusted by rotating the adjusting bolt, centering of the rotor and the stator in the machine base is completed, and the centering mode is simple, rapid and high in precision; furthermore, dynamic sealing between the rotor and the end cover is achieved through a sealing ring, the rotor and the end cover are fixed in cooperation with a fixing screw 9, the rotor is prevent