Coupling selection for reducer
Dec 22, 2018

Coupling selection for reducer depends on what is connected between the high speed shaft and the low speed shaft of the reducer. The selection of the reducer coupling mainly considers the height of the required transmission shaft, the size of the load, the installation accuracy of the two components to be connected, the smoothness of the rotation, the coupling prices, etc.


Due to installation, load deformation and temperature changes, it is difficult to maintain strict alignment of the two axes. There is a certain degree of X, Y direction displacement and skew angle CI. Therefore, when the radial displacement is large, the optional slider coupling is available; and when the angular displacement is large or the two-axis joints are connected, a universal joint can be selected; when the two axes are in operation, a larger additional relative is generated. For displacement, a flexible coupling should be used.


The working speed of the reducer coupling and the amount of centrifugal force: for high-speed transmission shafts, couplings with high balance accuracy, such as diaphragm couplings, should be used, and it is not suitable to use eccentric slider couplings. The magnitude and nature of the torque to be transmitted and the requirements for the damping vibration function are also one of the criteria for determining the type of reducer coupling. For example, for heavy-duty transmissions, gear couplings are available; for severe impact loads or for transmissions that require reducing torsional vibration, tire-type couplings should be used.

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