The selection of the coupling is important to weigh the height of the required drive shaft speed, the size of the load, and the installation accuracy of the two connected components.The stability and unit price of rotation, etc., check the characteristics of various couplings, and select a suitable coupling type.The working speed of the coupling and the centrifugal force produced.In view of the high-speed transmission shaft, a coupling with high leveling accuracy should be selected, such as a JMLJ type diaphragm coupling, etc., and it is inappropriate to choose a eccentric slider coupling.The torque size and properties of the required transmission and the requirements for the effect of cushioning sensation.

　　The big effect of the coupling is to connect two shafts (sometimes also connect shafts and other rotating parts), so that the two shafts can rotate together to transmit motion and torque, realize the connection and separation between the shaft and the shaft, so as to realize the power transmission and Intermittent.The coupling also has a certain ability to compensate for the deviation of the two shafts, so as to eliminate or reduce the external load caused by the deviation of the coupled shafts, improve the transmission function, and extend the life of the machine.In order to reduce the sensation of the machine transmission system and reduce the impact peak load

　　The deviation of the coupling is as follows:

　　1. The elastic coupling can transmit torque and rotation angle, and absorb the deviation of the shaft. When the installation deviation exceeds the allowable value, a sensation may occur or the furnace age of the coupling may be shortened. Therefore, it is necessary to ensure that the deviation is adjusted properly.

　　2. There are three kinds of shaft deviation, namely radial deviation, angular deviation and axial deviation.Please adjust the deviation so that it is lower than the allowable value listed in the product model table.

　　3. The allowable value of large deviations listed in each product refers to the condition that only one deviation exists, and when two or more deviations exist at the same time, the allowable value should be less than 1/2 of the large deviation in each model table.

　　4. Deviations do not only occur in facility assembly. The sensation in the work process, thermal expansion, bearing wear, etc. will cause deviations.Therefore, the opinion adjusts the axial deviation to less than 1/3 of the maximum value.