; with such stator core laminations having an exterior diameter of 26.42 cm and an inner diameter of 20.35 cm, weighing 4.14 kg or more but not over 6.72 kg; such rotor core laminations having an exterior diameter of 20.2 cm and an inner diameter of 14.0 cm, weighing 3.3 kg or more but not over 5.3 kg