a vibration wave motor includes a housing made up of a base housing member having an inner housing and an outer housing secured on opposite sides thereof to define two chambers . first and second stator members are secured to the inner and outer housings in each chamber respectively , and first and second rotor members secured to a spindle rotatably mounted in the housing are disposed in the respective chambers in contact with the first and second stator members , respectively . first and second spring members are provided for pressing the respective rotors and stators together and first and second adjusting members are provided for adjusting the pressure applied by the first and second spring members .