Types of coupling

The coupling can be divided into two categories: rigid coupling and flexible coupling.


Rigid coupling does not have the ability of cushioning and compensating the relative displacement of the two axes. It requires two axes to be aligned strictly. However, this kind of coupling has the advantages of simple structure, low manufacturing cost, easy assembly and disassembly, easy maintenance, high neutrality of the two axes, large transmission torque and wide application. Commonly used flange coupling, sleeve coupling and clamp coupling.


Flexible couplings can be divided into flexible couplings without elastic elements and flexible couplings with elastic elements. The former one only has the ability to compensate the relative displacement of two axes, but can not cushion and reduce vibration. In addition to compensating the relative displacement of two axes, it also has the function of cushioning and reducing vibration. But the transmitted torque is limited by the strength of elastic element, which is generally inferior to the flexible coupling without elastic element. Spring coupling and reed coupling.