Permanent Magnetic Couplings available from jbj Techniques Limited

The magnetic coupling is a synchronous system therefore the rpm of the internal half of the coupling is equal to the rpm of the external half of the coupling. The GMDO is a permanent magnet coupling designed to transmit torque using the magnetic field that is established between the inner and outer rotor without mechanical contact between shafts. The use of magnetic coupling is recommended in applications where it is necessary to hermetically separate two zones in order to prevent fluid or gas leakage from one area to another. The classic example is fluid transfer pump applications. In these applications the fluid must not come into contact with the external environment. These magnetic couplings also prevent transmission of vibration and axial and radial loads through the drive shaft. The rpm of the internal half of the coupling is equal to the rpm of the external half of the coupling. external coupling half internal coupling half Magnetic Couplings Introduction Principles of operation. The magnetic coupling works by using the power generated by permanent magnets . No external power supply is needed. These are permanent magnets not electro magnets. The magnets are installed alternating between poles in a side by side and opposing position as seen in the diagram. The main body of each coupling half is of ferromagnetic material to aid the channelling of the magnetic field correctly and therefore maximizing transmittable torque. external coupling half internal coupling half 1