Which type of coupling is more suitable for servo motors, the plum blossom coupling or the membrane coupling

Which type of coupling is more suitable for servo motors, the plum blossom coupling or the membrane coupling? Both types of couplings can be selected for servo motors. So, which one is more suitable for servo motors when compared?

The selection of couplings for servo motors is generally based on the different materials of their elastic elements. Plum blossom couplings are widely used in spindle servo motors, while membrane couplings are used in drive servo motors, for example: For CNC lathes and CNC milling machines, the X-axis and Y-axis of a CNC milling machine are driven by servo motors and often rotate in both forward and reverse directions during operation. In such cases, a diaphragm coupling is a better choice than a star coupling. For the spindle servo motor of a CNC lathe, a plum blossom coupling can be selected. Compared with the membrane coupling, the plum blossom coupling has a price advantage. Moreover, when the size is the same, the rotational speed limit of the plum blossom coupling is smaller than that of the membrane coupling. The elastic body of the plum blossom coupling also has a vibration damping effect, and the allowable axial deviation is larger than that of the membrane coupling. At the same time, the greater the deviation, Then the elastic element of the plum blossom coupling will wear out more quickly.

In practical situations, the selection of which coupling to choose still needs to be based on a comprehensive consideration of factors and be flexibly applied.