Abstract: The invention relates to a rotor for an electric machine, particularly to a rotor for a hermetic refrigerating compressor. The rotor core contains a number of axial slots, containing the electric conductors of the rotor, which are short-circuited by short-circuiting rings. The rotor has a spindle hole with at least one increased internal diameter for accommodating the bearing neck of the motor. The increased internal diameter of the core results in increased magnetic field strength in the area with increased internal diameter. The invention reduces the magnetic field strength in the area with increased internal diameter by the axial slots having varying profiles in their longitudinal direction.