Electrical motor with an intrinsic cooling system

An electrical motor comprising:

• a housing having a stationary internal part and a rotatable external part;
• a stator supported by the stationary internal part of said housing;
• a rotor attached to said rotatable external part of said housing, said rotor is arranged to rotate freely around the stator, wherein said rotatable external part has at least one outlet configured to evacuate a cooling medium,
• said stator and said rotor are each separately molded in respective epoxy layers;
• and
• a channel arranged between said molded rotor and said molded stator to conduct said cooling medium at least partly in an axial direction of said housing and to be in fluid communication with at least one inlet for said cooling medium and with the at least one outlet, the channel forming an intrinsic cooling system of the electrical motor,
• the electrical motor further comprising an additional channel axially extending through a center of the electrical motor and arranged to allow the cooling medium to flow through an interior of the stator, the at least one inlet being arranged on an inner surface of the stator, facing the additional channel, such that cooling medium can flow from the additional channel into the channel of the intrinsic cooling system, via the inlet.