Patent ID: 8922075

Claim:
An electric motor comprising: a stator; a frame supporting the stator; a bracket and an end plate configured to close respective ends of the frame; a first bearing housing and a second bearing housing respectively retaining bearings, and respectively fixed to the bracket and the end plate from an outside; a rotor shaft arranged inside the frame and rotatably supported by the bearings; a rotor attached to the rotor shaft and opposing the stator; a first supporting body and a second body attached to the rotor shaft at respective sides of the rotor and respectively including tapered supporting surfaces; and a plurality of threaded holes for fixing formed respectively in the bracket and the end plate to oppose the supporting surfaces, and into which a supporting member for fixing the rotor that presses the tapered supporting surfaces are configured to be insertable from outside, wherein the plurality of threaded holes are formed in a manner penetrating in a direction substantially perpendicular to the tapered supporting surface and extends into the frame towards the tapered supporting surface, and the supporting member is inserted in the plurality of threaded holes for fixing and presses each of the tapered supporting surfaces.