Application selection of coupling

1. Due to manufacturing, installation, load deformation and temperature changes, it is difficult to maintain strict and accurate alignment of the two shafts after installation and adjustment.

There is a certain degree of displacement in X and Y directions and skew Angle CI. When the radial displacement is large, the slider coupling can be selected, the angular displacement is large or the joint of two axes can be selected universal coupling, etc. Flexible coupling should be selected when the two axes have large additional relative displacement in the working process.

2. The working speed of the coupling and the centrifugal force caused by the size.

For high-speed transmission shaft, couplings with high balance accuracy, such as diaphragm couplings, should be selected instead of sliding block couplings with eccentricity.

3. The size and nature of the torque required to be transmitted and the requirements for the function of cushioning and damping.

For example, for high-power and heavy-duty transmission, the gear coupling can be selected; For the serious impact load or the transmission requiring the elimination of torsional vibration of shafting, the coupling with high elasticity such as tire type can be selected.

4. The working speed of the coupling and the centrifugal force caused by the size.

For high-speed transmission shaft, couplings with high balance accuracy, such as diaphragm couplings, should be selected instead of sliding block couplings with eccentricity.

5. The magnitude and direction of the relative displacement of the two axes.

When it is difficult to keep the two shafts strictly and accurately aligned after installation and adjustment, or when the two shafts will produce large additional relative displacement during the working process, flexible coupling should be selected. For example, when the radial displacement is large, the sliding block coupling can be selected, the angular displacement is large or the joint of two axes can be selected universal coupling.

6. Coupling reliability and working environment.

Unlubricated couplings usually made of metal components are more reliable; Coupling needs lubrication, its performance is easily affected by the degree of lubrication, and may pollute the environment. Coupling containing rubber and other non-metallic components are sensitive to temperature, corrosive media and strong light, and easy to aging.

7. Manufacture, installation, maintenance and cost of couplings.

Under the premise of meeting the performance of easy to use, should choose the coupling convenient assembly and disassembly, simple maintenance, low cost. For example, the rigid coupling is not only simple in structure, but also convenient in assembly and disassembly. It can be used for the transmission shaft with low speed and large rigidity. General non-metallic elastic component coupling (such as elastic sleeve pin coupling, elastic pin coupling, plum shaped elastic coupling, etc.), because of its good comprehensive ability, is widely used in general medium and small power transmission.