<p>Rotors in electric drives are subject to external vibration excitation, particularly in mobile applications. In addition to fluctuations in the load torque, further axial and radial loads generally act on the rotor of an electrical machine. In combination with the electromagnetic forces inside the machine, these external loads can lead to large vibration amplitudes.</p><p>In the present work, an axial flux machine in the type of a switched reluctance machine is investigated. The rotor dynamics are modeled in a minimal model by a rigid disk, which can tilt elastically around two axes in a spherical joint coupled to the shaft and rotates around the axis of symmetry at the motor speed. Under the influence of external excitation and electromagnetic forces in the air gap, the numerical results show critical operating ranges with high vibration amplitudes of the rotor disk.</p>