RMAK

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RMAK

RMAK
Request product

RMAK

Features

Magnetic couplings (MAK) are a hermetic, low-maintenance sealing solution for pumps, agitators, and aerators. Dangerous or precious media remains isolated in the closed system circuit. In turn, nothing penetrates to contaminate the medium.

  • For agitators and mixers with top, bottom and side entry drive
  • Customized solution
  • Compact design
  • Available with single- and double walled can
  • High temperature version possible
  • With sliding or roller bearing

Advantages

The RMAK is a custom solution for agitators in refineries and in the chemical, petrochemical, and oil & gas industries. This magnetic coupling is highly customizable and can be designed for high temperature ranges, to name just one example. Further options include the scope of delivery regarding shaft, bearing, housing, cooling flanges and measurement technology (speed, temperature monitoring, vibration monitoring).

  • Hermetically sealed / leakage-free
  • High customizable
  • Maintenance-free in trouble-free operation
  • FDA compliant materials

Operating range

Shaft diameter: d = ... 100 mm (4") (Special version possible)
Pressure: customer specific
Temperature: t = -40 °C ... +250 °C (-40 °F ... +482 °F)
  • Samarium cobalt (SmCo/MA3) max. +250 °C (+482 °F)
  • Neodymium iron boron (NdFeB/MA8) max. +120 °C (+248 °F)
    • Speed: n = 3,600 min-1 (bottom and side entry drive); n = 400 min-1 (top entry drive)
    Chemical resistance: pH 0 … 14
    Viscosity: 0.3 … 5,000 mPas (SiC)
    Torque: max. 300 Nm (bottom and side entry drive)
    Torque: max. 10,000 Nm (top entry drive)
    Solids: max. 0.1 mm; max. 5 % by weight; grain hardness max. 700 HV

Materials

Sliding faces: Silicon carbide SiC (Q1) or SiC-C-Si (Q3) (bottom or side entry drive),
Customized design of rolling bearings for top drive (e.g. ceramics, hybrid)
Magnets: SmCo (MA3), NdFeB (MA8)
Metal parts: CrNiMO steel 1.4404 (G), CrNiMo steel 1.4462 (G1), Inconcel®, Hastelloy®; further materials on request

Standards and approvals

  • ISO 2858
  • ATEX on request
  • FDA on request
  • Compliant to TA Luft (German Clean Air Act)

Functional description

Power is transmitted contact-free by magnets from the drive shaft to the product-contacting output shaft. Between the two rotating parts is the containment can, the sealing element, which is bolted to the container. It separates the product space from the atmosphere and hermetically seals it statically.

Notes

Different variants are available to meet specific requirements:

  • Coolable/ heatable bearing arrangements
  • Sliding bearings for bottom or side entry drives
  • Heating/cooling flange
  • Vertical drive with roller bearing (dry running, permanently lubricated)
  • High temperature version (+350 °C)
  • Sensors for temperature, speed or vibration monitoring

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Contact

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We develop and produce customer-specific special and individual solutions for every application.

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The Eagleburgmann Group

Sealing technology for plants and machines

EagleBurgmann is one of the worldwide leading providers of industrial sealing technology. Mechanical seals, seal supply systems, magnetic couplings, carbon floating ring seals, expansion joints, gaskets and packings as well as comprehensive services are used wherever reliability and safety are needed.

Mechanical seals and more

Sealing technology by EagleBurgmann is used worldwide in oil and gas industries, refineries, the petrochemical, chemical, and pharmaceutical industries, food processing, energy, water, mining, paper, aerospace, and other industries. Close to 5,800 employees provide their ideas, solutions, and commitment so that customers can rely on our sealing technology.

What makes us stand out is our excellent quality, great innovative capacity, and an extensive product portfolio for nearly all industrial processes and fields of application. Our product portfolio includes everything from mechanical seals and seal supply systems to magnetic couplings, carbon floating ring seals, expansion joints, and gaskets and packings as well as comprehensive services. Since we are part of the German Freudenberg and Japanese EKK group, we have all the necessary resources for a firmly based reliable partnership.

EagleBurgmann WORLDWIDE