It can be said that the reducer is a kind of thing that objects with speed will use, and he can be seen everywhere in our life, and the use of the reducer is increasingly widespread. For example, food, light industry, chemical machinery, electric machinery and electronic circuit are closely related to our daily life. Of course, there are construction machinery, cement machinery, road construction machinery, water conservancy machinery, and other industrial machinery. And it also has some found in the national economy industry applications, such as mining machinery, rubber machinery, petroleum machinery, etc., all need to use reducer, which the development of the industry, the requirement of speed reducer and also the higher demand, the development of the national economy is more and more fast, accordingly reducer what purpose has received more and more people's attention.

In our life, there is movement all the time, there is movement, there is speed, we need to reduce the speed, must need a machine to achieve the purpose of deceleration. However, we need deceleration in daily life, factories, industry, manufacturing, machinery and so on, of course, also need such a machine. This has laid the foundation for the wide application of reducer, so reducer is not only used in our daily life, but also used in various production. So the purpose of the reducer is clear.