1252 Input shaft 5th gear

A gear refers to a mechanical component with teeth on the rim that can continuously mesh and transmit motion and power. The application of gears in transmission has been around for a long time. At the end of the 19th century, the principle of the gear cutting method and the emergence of specialized machine tools and cutting tools that used this principle for gear cutting emerged one after another. With the development of production, the smoothness of gear operation was valued.