It is intended to suppress the vibration and noise during operation of a concentrated winding electric motor and to provide an electric motor with high efficiency, low vibration and low noise. A skew is formed on at least one of a stator (10) and a rotor (20), arranged with a concentrated winding, and a winding vibration damping body (18) is inserted between windings (13) of different phases within a winding groove (19) and contacted therewith.