Magnetic couplings (MAK) are a hermetic sealing solution for pumps and agitators. Dangerous or precious media remains isolated in the closed system circuit.


  • Magnetic coupling for standard applications
  • Hermetically sealed
  • No contact of torque transmitting elements
  • No maintenance necessary
  • Hastelloy® can for high performance
  • High efficient can optional
  • Product lubricated sliding bearing included

Operating range

Shaft diameter: d = … 40 mm (1,57″)
Pressure: p = 25 bar (363 PSI)
Temperature: t = -40 °C … +250 °C (-40 °F … +482 °F) (SmCo),
+120 °C (+248 °F) (NdFeB)
Speed: n = 3,600 min-1
Chemical resistance: pH 0 … 14
Viscosity: 0.3 … 5,000 mPas (SiC)
Torque: max. 462 Nm
Solids: max. 0.1 mm; max. 5 % by weight; grain hardness max. 700 HV


Sliding faces: Silicon carbide SiC (Q1),
Carbon silicon impregnated SiC-C-Si (Q3),
Carbon graphite resin impregnated (B)
Magnets: Samarium Cobalt (MA3),
Neodymium-Iron-Boron (MA8)
Metal parts: CrNiMO steel 1.4571 (G), CrNiMo steel 1.4462 (G1), Hastelloy® C-4 2.4610 (M)

Functional description

The power transmission occurs contact-free through magnets from the drive shaft to the product wetted output shaft. Between the two rotating parts is the can wich is bolted to the container.


Different variants are available to meet specific requirements:

  • Coolable or heatable bearing arrangements
  • Vertical drive with dry running roller bearing
  • High temperature variant
  • Without bearing

Can variants:

  • Double wall
  • High pressure can
  • Ceramic, PEEK carbon fiber, Titanium cans

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