Improved electric motor/generator

The invention relates to an electric motor/generator (M), showing a rotation axis (102), the motor comprising a stator (104) and a rotor (106), the stator showing an outer perimeter, the rotor at least enclosing the outer perimeter of the stator, the rotor rotatable around the rotation axis, the rotor and the stator separated by a first set of two axial airgaps (114A, 1148), one airgap at each side of the stator, the rotor and/or stator damaged when any of the airgaps momentarily closes, characterized in that the stator shows one or more radial axles (116A, 1168), each radial axle associated with one protective bearing (118A, 1188), the inner ring of each protective bearing surrounding the associated axle, the protective bearing equipped with an outer ring having an outer diameter sufficiently large to avoid closure of at least one airgap (114A, 1148) when the rotor and/or the stator deforms due to external forces, thereby avoiding closure of the airgap and damage of the rotor and/or stator due to said external forces.