Radial fans

The radial fan deflects the air flow by 90° and generates a pressure rise by the rotation of the impeller.

Radial fans

Radial fans allow a higher pressure rise than axial fans, also the generated noise level is normally lower.

Helical casings improve its efficiency. The motor is always located outside the gas flow, a significant advantage in comparison to axial fans for aggressive, explosible or abrasive media.

Various impeller types can generate different fan curves. Also nearly horizontal curves are available, thus ensuring a nearly constant presure rise at changing volume flows within a certain range.

For the attachment of the motor there exist various principles:

  • dirct drive: impeller is assembled directly at the motor shaft. Compact and economic (DIN EN ISO 13349:2011, Tab.4, Nr.4 or 5)
  • belt drive: impeller speed is increased by belt drive. Flexible (DIN EN ISO 13349:2011, Tab.4, Nr.1,2 or 3)
  • coupling drive: impeller also with separate bearing, but driven at same speed as motor. For high performance (DIN EN ISO 13349:2011, Tab.4, Nr.7 or 9)

Numerous variations are available by

  • size
  • impeller type
  • material
  • tightness
  • casing orientation
  • temperature resistance
  • pressure resistance
  • explosion protection
  • accessories and sensors