The function of the coupling is used to couple the two axes together. When the machine is running, the two axes can not be separated. Only when the machine is stopped and the connection is disassembled, the two axes can be separated. When the shaft and the shaft are connected to transmit power, Pulley or gear, but if you want the two axes to be straight and require constant speed rolling, you must use the coupling to connect. And because of the accuracy of the shaft, the shaft is subject to thermal expansion or the operation of the axis of bending, etc., will make the concentricity between the two axes change, so the flexible coupling can be used as a bridge to maintain the power between the two shafts, Axis between the radial, angular and axial deviation, thereby extending the life of the machine, improve the quality of machinery.

The biggest effect is to connect two axes (sometimes also connected to the shaft and other rotary parts), so that the two axes common rotation to transfer motion and torque, shaft and shaft to achieve the connection between the separation, in order to achieve power transmission and interruption. The coupling also has a certain ability to compensate for the offset of the two axes to eliminate or reduce the additional load caused by the relative displacement of the two axes, to improve the transmission performance and to extend the machine life. In order to reduce the vibration of the mechanical transmission system, reduce the impact of peak load, the coupling should also have a certain cushioning performance. However, due to fierce market competition, many manufacturers in order to seek profits, to fake and shoddy products to make good products, so that consumers suffer, therefore, the choice of quality products is also very important.

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