Harmonic Drive products maximize output torque & minimize size & weight, our harmonic drive and planetary gears offer advantages such as high reduction ratios in a single stage, zero backlash & high precision that cannot be equaled by conventional gear trains. DC motor controllers, incremental encoders and actuators are also available.Harmonic drive gearing is in a class of its own when it comes to mechanical power transmission design. Combining unique operating principles with constructions that minimize size and weight, harmonic drive transmissions offer advantages such as high reduction ratios in a single stage, very low backlash and in-line input/output that cannot be equalled by conventional gear trains.The major applications of this innovative principle in power transmission range from use in industrial robots and machine tools to medical equipment and solar energy devices.