Ashoka Gears supplies Mechanical Speed Changing Harmonic Gear Drive. Ashoka Gears is an ISO 9001:9002 certified company. Mechanical Speed Changing Harmonic Gear Drive operates on a different principle form, and has capabilities beyond the scope of, conventional speed changers. Mechanical Speed Changing Harmonic Gear Drive consists of a thin ring that deflects elastically as they roll on the inside of a slightly larger rigid circular ring. The basic elements of harmonic drives are circular spline, flexspine, and wave generator, all assembled in a normal configuration. It allows for full tooth disengagement at the two points along the minor axis of the wave generator.