CVT PULLEY SHEAVE, module 2, Teeth 14,The product itself is a kind of gear. Gear is a mechanical component with teeth on the rim that can continuously engage and transfer motion and power. It is a mechanical part with teeth that can mesh with each other.

The application of gear in transmission appeared very early, more than 300 BC, ancient Greek philosopher Aristotle in "Mechanical Problems", on the transfer of bronze or cast iron gear rotating motion problem. At the end of the 19th century, the development of the principle of tooth cutting and the use of this principle of tooth cutting special machine tools and tools have appeared, so that gear processing has a more complete means, and with the development of production, gear running stability is valued.

Gear; A mechanical component with teeth on the rim that can continuously engage to transfer motion and power is a mechanical component with teeth that can mesh with each other. The diameter of the big gear is twice that of the small one.