Harmonic Drive Systems Inc. produces and sells precision control equipment and components worldwide. Its mechatronics products include rotary and linear actuators, speed reducers, motors, sensors, drivers, controllers, and other system elements. The company offers the HarmonicDrive precision speed reducer, high-precision planetary speed reducers under the AccuDrive and HarmonicPlanetary brands, and a series of high-performance gear heads for servo motors. Its products are used in industrial robots, semiconductor manufacturing equipment, and other systems. Founded in 1970, the company is headquartered in Tokyo, Japan.