Reducer is a relatively precise machine, the purpose of using it is to reduce speed and increase torque. (Note: torque calculation formula of reducer)

It has many kinds and different models. Different kinds have different uses. There are many types of reducer according to transmission type can be divided into gear reducer, worm reducer and planetary gear reducer; according to transmission series can be divided into single and multi-stage gear reducer; according to the shape can be divided into cylindrical gear reducer, bevel gear reducer and cone - cylindrical gear reducer; according to the arrangement of transmission can be divided into expansion, split and coaxial reducer. The following are the commonly used gear reducer categories:

1 、 cycloid reducer

2 、 hard surface cylindrical gear reducer

3 、 planetary gear reducer

4 、 gear reducer with soft teeth

5, tricyclic reducer

6 、 crane reducer

7 、 worm reducer

8 、 axle mounted hard toothed surface reducer

9, stepless speed change machine

Worm gear reducer is the main feature of reverse self-locking function, can have a larger reduction ratio, the input shaft and output shaft is not on the same axis, nor in the same plane. But the general volume is large, the transmission efficiency is not high, the accuracy is not high. Harmonic harmonic drive gear is controlled by the flexible components to transfer elastic deformation and dynamic movement, small volume, high precision, but the disadvantage is the soft wheel limited life, impact resistance, rigidity compared with metal. Input speed can not be too high. Planetary reducer has the advantages of compact structure, small return clearance, high accuracy, long service life, and the rated output torque can be done a great deal. But the price is slightly expensive.