Permanent magnetic couplings for mechanical power transmission

Magnetic coupling layout Input rating (continuous rating S1) (kW) Electric motor torque (Nm) Magnetic Coupling Selection Drive shaft (usually electric motor side) Number of poles (rpm) Driven shaft (usually pump side) Type of pump Pump dimension Pump installation position (vertical or horizontal) Pump suction pressure (bar) Additional information Type of electric motor start (direct or soft or by inverter) Benefits No alignment problems - Assembly negates possibility of errors. Fluid viscosity (cSt) Torque limited safety feature - correctly specified magnetic coupling will not exceed specified torque value therefore preventing damage from possible torque overload. Should the torque exceed maximum design value the coupling will slip so ceasing transmission. Bring the coupling to a complete stop and the magnets will reposition automatically (S-N ; N-S) and transmission can continue by restarting. Type of fluid No vibration - coupling damps mechanical vibrations which inturn lowers noise pollution. No maintenance on the shaft seals - saving time and money. Two completely separate zones - transmit torque between 2 isolated areas. There is no physical mechanical connection between the drive and driven shaft. Fluid temperature (°C) No fluid leakage - therefore no contamination or waste of expensive fluids. 3 Introduction Magnetic Couplngs Cooling holes Magnets Port temperature sensor Electric motor Pump Magnets External rotor Containment shroud Internal rotor www.jbj.co.uk/magnetic-couplings.html #DriveLineHarmony