Harmonic gearing system also known as strain wave gearing is a type of mechanical gear system that uses a flexible spline with external teeth, which is deformed by a rotating elliptical plug to engage with the internal gear teeth of an outer spline. Contact us: - +91 7030669818 / +886 (09) 67388376 Email id:- sales@smdgearbox.com Visit us:- https://www.smdgearbox.com/harmonic-gearbox-with-solid-shaft-end