NMB High Efficiency

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NMB High Efficiency

NMB High Efficiency
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Item Description
1.1 Inner rotor
1.2 Outer rotor
1.3 Can

NMB High Efficiency

Features

The NMB series is used successful in many applications worldwide. The can is made from PTFE-seal insulated rings and a slotted outer can, what reduces EC-losses to a minimum. They are designed for increased safety and energy savings. Thus they can handle large motor torques, high speed and high pressure.

Advantages

  • Magnetic coupling for applications acc. to API 685 (similar to API 610)
  • Hermetically sealed
  • No contact of torque transmitting elements
  • No maintenance necessary
  • High efficiency can (Insulated rings and slotted outer can) for lowest eddy current losses (approx. 2 % of motor power)
  • Increased safety and energy savings compared to solid Hastelloy® cans
  • Sliding bearing optional

Operating range

Pressure: p = 45 bar (653 PSI)
Temperature: t = -40 °C ... +250 °C (-40 °F ... +482 °F) (SmCo),
+120 °C (+248 °F) (NdFeB)
Torque: 18 … 1,879 Nm

Materials

Magnets: Samarium cobalt (MA3),
Neodymium iron boron (MA8)
Metal parts: CrNiMo-Steel 1.4401/1.4436,
PTFE Polytetrafluorethylen (T)

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 which is bolted to the container.

Notes

Different variants are available to meet specific requirements:

  • Version with integrated sliding bearing
  • Dry running roller bearing
  • High temperature variant

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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.

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