What is a magnetic coupling?

Magnetic couplings are called magnetic transmission by professionals and are components widely used in various general machinery.

At present, magnetic couplings are used to connect two shafts, namely the motor shaft and the working machine shaft, so that they can rotate together, and ultimately achieve the function of transmitting torque.

Traditionally produced magnetic couplings must transmit torque through the interconnection of the driving shaft and the driven shaft. The structure of the magnetic coupling is very complex, and the manufacturing accuracy is very high, otherwise it will easily affect production efficiency. In addition, traditional magnetic couplings are prone to damage to various components when overloaded, especially the sealing between the driving shaft and the driven shaft. When the driving shaft and the driven shaft work in two different media that need to be isolated from each other, sealing elements must be used for sealing. If there is a problem with the sealing, harmful gases or liquids will remain in the system. Once leaked, it will not only pollute the environment, but also endanger people's lives.

Magnetic couplings are non-contact couplings that generally consist of two magnets. One of the magnets is installed inside the system, and the other is outside the system. The two magnets are separated by an isolation cover in the middle. The inner magnet is connected to the driven part, and the outer magnet is connected to the power part.

In addition to the function of elastic couplings to buffer and absorb vibration, the biggest feature of magnetic couplings is that it breaks the structural form of traditional magnetic couplings and adopts a new magnetic transmission principle to achieve no passage between the driving shaft and the driven shaft. Direct contact can transmit force and torque, and the dynamic seal can be converted into a static seal to achieve zero leakage. Therefore, it is widely used in occasions with special requirements for leakage.