The superposition of ultrasonic frequency vibrations to conventional machining techniques is known and practiced since the 1950s under the name of ultrasonic machining. Using ultrasound, many good properties appear including reduced thrust force, improved surface finish, reduced residual stress in machined material, etc…In this paper we present a new assembly technique based on the same principles: ultrasonic press–fitting. Feasibility and energy reduction are demonstrated through experiments under industrial production conditions.