How to choose the right shaft coupli
Source:    Publish Time: 2010-06-16 03:20   1229 Views   Size:  16px  14px  12px

shaft coupling is a piece of hardware used to connect one shaft to another in such a way that torque can be transmitted. A typical example would be coupling the shaft of a motor to the shaft of a pump driven by the motor. Polaris fluid power focuses on shaft couplings (power transmission field) for long time.


Shaft couplings can be grouped into three types: high-precision, flexible and sliding/pivoting. High-precisioncouplings tend to have higher stiffness and are suited to applications where shaft alignment is relatively good. Flexible couplings are better able to compensate for radial or angular shaft misalignment, while greater misalignment calls for the use of sliding or pivoting couplings.


Capable of operating under the most arduous of conditions due to the simple, robust construction, pin/buffercouplings absorb shock loads and can tolerate misalignment. Torques up to around 250kNm can be transmitted.


Regardless of the application, cost will be a consideration. As a guide, the simpler the coupling design and the less accuracy required, the cheaper the coupling will be. Care should therefore be taken not to over-specify the coupling and spend more money than is absolutely necessary. As always, the advice is to contact the suppliers for advice if required, but the information above should give an indication of the types if coupling that are most likely to be correct for a given application.

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