In this study, a novel structured V-type ultrasonic rotary motor has been proposed to enable use in small precision machines. A thin metal plate was used as a V-shaped vibrator and four ceramic plates were attached on the upper and bottom sides of the metal plate. By applying two electric fields having a 90 degrees phase difference on the ceramics, rotational displacement occurs at the contact point. A finite element analysis was used to simulate the motional pattern dependent on the angle between the legs of the stator. The motor was fabricated on the basis of the results of the FEM analysis. The rotor and stator were connected to a push-pull gauge and the pre-load between them was controlled with this gauge. Characteristics of the motor such as pre-load, speed, torque, and temperature were measured by using a driver and measurement equipment. The difference of resonance frequency of each model was lower than 5[Hz] and driving frequencies were applied equally to each model. As a result, when the angle of the leg decreased, torque increased. On the contrary, when the angle increased, speed increased. (C) 2011 Elsevier B.V. All rights reserved.