Item Description
1 Coupling
1.1 Inner rotor
1.2 Outer rotor
2 Can
3 Bearing assembly
3.1 Radial journal bearing
3.2 Axial journal bearing
3.3 Axial journal bearing
3.4 Shaft sleeve
4 HSH cap screw



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


  • Magnetic coupling for applications acc. to API 685 (similar to API610)
  • Hermetically sealed
  • No contact of torque transmitting elements
  • No maintenance necessary
  • Hastelloy® can available
  • High efficiency can optional
  • Product-lubricated sliding bearings included

Operating range

Shaft diameter: d = ... 40 mm (1,57")
Pressure: p = 40 bar (580 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: 434 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)

Standards and approvals

  • API 685

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:

  • High temperature variant
  • High pressure can
  • PEEK carbon fiber can

Product variants

PEEK carbon fiber can variant