Gearboxes are used in a wide range of applications, such as in wind turbines. Gearboxes are an important mechanical component that is widely used in wind turbines. Its main function is to transmit the power generated by the wind turbine under the action of wind force to the generator and make it get the corresponding rotational speed.

Usually the rotational speed of the wind turbine is very low, far less than the generator to generate the required rotational speed, must be realized through the gear box gears to speed up the role of the gear box, so the gear box is also called the speed box.