MAK685 For a larger view, please mouseover the image.
For a larger view, please mouseover the image.
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
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)
  • Oil and gas industry
  • Refining technology
  • Centrifugal pumps
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