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Centrifugal fans

In a centrifugal fan, the medium is sucked in axially, deflected by 90°, accelerated radially by rotation of the impeller and thus its pressure increased.

Centrifugal fans achieve a higher pressure than axial fans. A spiral casing serves to improve efficiency. The drive motor is always located outside the gas flow, which is particularly advantageous for aggressive, explosive or dusty media.

Drive variants

  • Direct drive: the impeller is mounted directly on the motor shaft. Compact and economical (DIN EN ISO 13349:2011, Tab.4, No.4 or 5)
  • Belt drive: the impeller speed is transferred via a belt mechanism. Flexible (DIN EN ISO 13349:2011, Tab.4, No.1,2 or 3)
  • Coupled drive: the directly driven impeller has its own bearing independent of the motor. For high power (DIN EN ISO 13349:2011, Tab.4, No.7 or 9)

Designs and versions

A wide range of designs and versions are available in terms of

  • Size
  • impeller types
  • materials
  • Tightness
  • Casing position
  • Heat resistance
  • Pressure resistance
  • Explosion protection
  • Accessories and sensors
  • the belt-driven version is also available for inflow from both sides
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