An electric motor, comprising: - a shell comprising a shell body defining a shell cavity, the shell body having a shell opening, the shell comprising a shield removably fastened to the shell body for closing and sealing the shell opening, - a stator defining a stator cavity, the stator being arranged inside the shell cavity and comprising conductive stator windings, - a rotor arranged in the stator cavity, the rotor being rotatable with respect to the stator about a rotor axis (A-A), the rotor axis (A-A) extending through the shell opening in an axial direction (X-X), - connecting means for connecting the stator windings with an electric power source, wherein said connecting means comprise: - a conductive rod extending through the shield of the shell, between a first end portion protruding from the shield outside the shell cavity and a second end portion protruding from the shield inside the shell cavity, the first end portion being configured to be connected with the electric power source, - a first terminal rigidly associated to the conductive rod and arranged inside the shell cavity, the first terminal comprising a male terminal, - a second terminal rigidly connected to a respective stator winding, the first terminal being directly and removably connected to the second terminal for electrically connecting the stator winding with the conductive rod, the second terminal comprising a female terminal comprising a first receptacle, the female terminal defining a seat, the male terminal engaging removably in the seat of the female terminal, wherein: - the connecting means comprise a holding member comprising a second receptacle, the holding member being fixed to the conductive rod at the second end portion of the conductive rod, - the first terminal is removably fixed to the holding member, the male terminal comprising a conductive bar extending in the axial direction (X-X) between a first end portion and a second end portion, the first end portion of the conductive bar engaging removably the first receptacle, the second end portion of the conductive bar engaging removably the second receptacle. - a shell comprising a shell body defining a shell cavity, the shell body having a shell opening, the shell comprising a shield removably fastened to the shell body for closing and sealing the shell opening, - a stator defining a stator cavity, the stator being arranged inside the shell cavity and comprising conductive stator windings, - a rotor arranged in the stator cavity, the rotor being rotatable with respect to the stator about a rotor axis (A-A), the rotor axis (A-A) extending through the shell opening in an axial direction (X-X), - connecting means for connecting the stator windings with an electric power source, wherein said connecting means comprise: - a conductive rod extending through the shield of the shell, between a first end portion protruding from the shield outside the shell cavity and a second end portion protruding from the shield inside the shell cavity, the first end portion being configured to be connected with the electric power source, - a first terminal rigidly associated to the conductive rod and arranged inside the shell cavity, the first terminal comprising a male terminal, - a second terminal rigidly connected to a respective stator winding, the first terminal being directly and removably connected to the second terminal for electrically connecting the stator winding with the conductive rod, the second terminal comprising a female terminal comprising a first receptacle, the female terminal defining a seat, the male terminal engaging removably in the seat of the female terminal, wherein: - the connecting means comprise a holding member comprising a second receptacle, the holding member being fixed to the conductive rod at the second end portion of the conductive rod, - the first terminal is removably fixed to the holding member, the male terminal comprising a conductive bar extending in the axial direction (X-X) between a first end portion and a second end portion, the first end portion of the conductive bar engaging removably the first receptacle, the second end portion of the conductive bar engaging removably the second receptacle.