Connection structure of motor rotor and bearing

The present invention discloses a connection structure of a motor rotor and a bearing. The motor rotating shaft of the structure is a hollow cup-type rotating shaft with an opening at the rear end, arotor core is arranged at the outer ring of the hollow cup-type rotating shaft, a front bearing inner ring is arranged at the outer ring of the front end of the hollow cup-type rotating shaft, a frontbearing outer ring is arranged in a bearing hole of a front end cover, the inner side face of a rear end cover is provided with a cantilever shaft, the inner ring of the rear bearing is arranged at the cantilever shaft of the inner side face of the rear end cover, and the outer ring of the rear bearing is arranged at the inner ring of the rear end of the hollow cup-type rotating shaft. The structure changes the connection mode of the rotating shaft and the bearing, overcomes defect of a traditional mode of fixing of the outer ring and rotating of the inner ring, increases the cooperation diameter of the rotating shaft