A motor (110, 210) comprising a main stator, a main rotor, and a main motor shaft, the motor (110, 210) comprising an integrated fan having blades that can rotate about an axis coaxial with the main motor shaft, and an auxiliary motor associated with the fan, the auxiliary motor comprising an auxiliary stator, an auxiliary rotor, and an auxiliary motor shaft rotationally fixed to the blades of the fan, fixed to the auxiliary rotor and guided in rotation by means of auxiliary bearings mounted on the auxiliary stator, in which the main motor shaft extends in a longitudinal direction, the motor having, in this longitudinal direction, a drive side intended to be arranged on the side of equipment to be driven, and a non-drive side, characterised in that: - the auxiliary motor shaft of the auxiliary motor is arranged in the extension of the main motor shaft in the longitudinal direction, on the opposite side to the drive, - the motor (110, 210) comprises a main frame, and an attachment part of the auxiliary motor to the main frame, the auxiliary motor comprising an auxiliary frame defining, with the attachment part, at least one cooling channel of the auxiliary stator, wherein the fan is a pull-flow fan, - the auxiliary frame and the main frame have separate air inlets provided on opposite sides (O, E) of the motor, the motor having a plurality of ventilation channels, the fan comprising a structure defining a plurality of air passage orifices, and wherein pressurisation of the fan draws a primary air flow from the air inlet of the main frame through the ventilation channels of the motor and generates a secondary air flow from the air inlet of the auxiliary frame through each cooling channel of the auxiliary motor and the air passage orifices, or - the auxiliary frame and the main frame have separate air inlets provided on opposite sides (O, E) of the motor, the motor having several ventilation channels, the fan comprising secondary blades, and wherein pressurisation of the fan draws a primary airflow from the air inlet of the main frame through the ventilation channels of the motor and generates a secondary airflow from the air inlet of the auxiliary frame through each cooling channel of the auxiliary motor and along the secondary blades. - the auxiliary motor shaft of the auxiliary motor is arranged in the extension of the main motor shaft in the longitudinal direction, on the opposite side to the drive, - the motor (110, 210) comprises a main frame, and an attachment part of the auxiliary motor to the main frame, the auxiliary motor comprising an auxiliary frame defining, with the attachment part, at least one cooling channel of the auxiliary stator, wherein the fan is a pull-flow fan, - the auxiliary frame and the main frame have separate air inlets provided on opposite sides (O, E) of the motor, the motor having a plurality of ventilation channels, the fan comprising a structure defining a plurality of air passage orifices, and wherein pressurisation of the fan draws a primary air flow from the air inlet of the main frame through the ventilation channels of the motor and generates a secondary air flow from the air inlet of the auxiliary frame through each cooling channel of the auxiliary motor and the air passage orifices, or - the auxiliary frame and the main frame have separate air inlets provided on opposite sides (O, E) of the motor, the motor having several ventilation channels, the fan comprising secondary blades, and wherein pressurisation of the fan draws a primary airflow from the air inlet of the main frame through the ventilation channels of the motor and generates a secondary airflow from the air inlet of the auxiliary frame through each cooling channel of the auxiliary motor and along the secondary blades.