Rotating shaft limiting assembly and motor

The utility model discloses a rotating shaft limiting assembly and a motor, and relates to the field of motors. A traditional air feeder usually uses a radial sliding bearing as a radial supporting part of a rotating shaft, but the axial positioning of the rotating shaft cannot be considered, the rotating shaft is easy to axially float in an inner hole of the radial bearing, and the vibration and the noise are increased. A rotating shaft limiting assembly is arranged in a rotating shaft of the motor, the rotating shaft limiting assembly comprises a shaft sleeve, a sleeve, a magnet and a magnetic conductive ring, the sleeve is provided with a cylindrical shaft sleeve cavity and a cylindrical magnetic cavity located below the shaft sleeve cavity, the shaft sleeve is embedded in the shaft sleeve cavity, the rotating shaft is sleeved with the shaft sleeve, and the shaft sleeve is in running fit with the rotating shaft; a magnetic conductive ring is arranged between the periphery of the magnet and the inner wall o