Vehicle drivetrain with active magnetic bearings

A vehicle drivetrain, comprising:

• a motor configured to provide a rotational driving force;
• a shaft configured to receive the rotational driving force from the motor;
• a magnetic bearing configured to selectively support the shaft;
• a mechanical bearing configured to selectively support the shaft;
• and
• a control mechanism configured to transition support of the shaft between the mechanical bearing and the magnetic bearing by controlling a magnetic system structured to move at least one of the shaft and the mechanical bearing between a first position where the shaft is supported by the mechanical bearing when the control mechanism detects that a vehicle speed is below a threshold and a second position where the shaft is not supported by the mechanical bearing when the control mechanism detects that the vehicle speed is equal to or greater than the threshold.