Get a 25mm harmonic drive at low price. It is available with gear ratios of 30 and 50. Harmonic gearing provides high transmission accuracy and supports a single-stage high reduction ratio with low inertia. Cost-effective strain wave gear is the best solution for industrial robots.
Tips: Strain wave harmonic drive gearbox working principle
Harmonic gear transmission was invented by the American inventor CWMusser in 1955. The harmonic drive is a new type of transmission method that uses the elastic deformation of flexible working members to move or transmit power. It breaks through the use of rigid components in mechanical transmission. The mechanism mode uses a flexible component to achieve mechanical transmission, thereby obtaining a series of special functions that are difficult to achieve by other transmissions. Because the deformation process of the intermediate flexible component is basically a symmetrical harmonic, it is named. Except that the former Soviet Union called this kind of transmission flexible wheel transmission, the United States, Britain, Germany, Japan and other countries all called it "harmonic transmission".
ATO Harmonic Drive Gearbox Installation Manual