PURPOSE: To readily manufacture a high speed and high output motor by pressing a rotor on the end face of a stator integrally formed through a conical vibrator between a piezoelectric vibrator and a twisting coupler.

CONSTITUTION: Terminal boards 6, 7 with leads are interposed between two ceramic piezoelectric vibrators 4 and 5 opposed on the anode surfaces to be set on a circular washer 8. A cap bolt 9 is inserted to a through hole opened in the center. Further, a twisting vibrator 2 is superposed through a conical vibrator 3 thereon, integrated by a bolt 9 to form an ultrasonic elliptical vibrator, thereby constructing a stator. A rotor 1 is pressed with a spring to the end face of the stator. Thus, a high output and high speed motor can be readily manufactured.