The correct choice of diaphragm coupling

Choosing the right coupling is a key step to make good use of the coupling. You have to consider what type of coupling to choose in the design stage.
1. The diaphragm coupling is composed of at least one diaphragm and two shaft sleeves.The diaphragm is fastened to the shaft sleeve with a pin and generally does not loosen or cause backlash between the diaphragm and the shaft sleeve.Some manufacturers provide two diaphragms, and some provide three diaphragms, with one or two rigid elements in the middle, and the two sides are connected to the shaft sleeve.
2. The difference between single-diaphragm coupling and double-diaphragm coupling is the ability to handle various deviations. In view of the need for complex bending of the diaphragm, the single-diaphragm coupling is not suitable for eccentricity.The double diaphragm coupling can bend in different directions at the same time to compensate for eccentricity.Valve inlet pump 3. The characteristic of diaphragm coupling is a bit like a bellows coupling. In fact, the way the coupling transmits torque is similar.The diaphragm itself is very thin, so it is easy to bend when the relative displacement load is generated, so it can withstand up to 1.5 degrees of deviation, while generating a lower bearing load in the servo system.
4. Diaphragm couplings are often used in servo systems. Diaphragms have good torque rigidity, but are slightly inferior to bellows couplings.
5. On the other hand, the diaphragm coupling is very delicate, and it is easy to be damaged if it is misused or not installed correctly during use.Therefore, it is very necessary to ensure that the deviation is within the tolerance range of the normal operation of the coupling.