Rotor support of motor and motor thereof

The utility model relates to a rotor support of a motor and the motor thereof. The motor comprises an output shaft (10) and a rotor (20), two ends of an iron core block of the output shaft are respectively provided with a clamping portion (12), the rotor comprises an iron core (22) sleeving the output shaft, a plurality of rotor copper bars (24) arranged at the circumference of the iron core, and two rotor end rings (26) respectively connected with two ends of each rotor copper bar, the rotor support of the motor comprises a body (36), a support end (32) and a limiting end (34), the body is annular and can sleeve the output shaft, the support end is arranged at the excircle of the body and can be abutted against the rotor end rings so that a support force for the rotor end rings along the radial direction is generated, the limiting end is arranged at the inner circle of the body and can be abutted against the iron core, the limiting end is provided with a plurality of limiting portions (342), and the limiting portions can be clamped with the clamping portions (12).