In the previous article, we introduced the basic principles of gears and how gears transmit power and torque through the meshing of teeth. However, in practice, gears do not come in only one form. Depending on transmission requirements, installation direction, load conditions, and operating environment, engineers choose different types of gear designs. Some gears are suitable for high-speed operation, some are designed for high-torque output, some can change the direction of

Gears can be found in mechanical equipment, automated production lines, automobiles, robots, and even everyday products. Although a gear may look like nothing more than a round disc with teeth, it is actually an essential component in many transmission systems. From basic power transmission to changing rotational speed, increasing torque, and precisely controlling machine movement, gears play a key role behind the scenes. So, how exactly do gears transmit power? And why are t