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High to medium pressure impeller
Low-pressure impeller/cylindrical rotor fan
Material
Joining technology, Shaft seating
FANS
The roots of actiro are in the development, design and production of fans. Our range includes all radial fan geometries up to a diameter of 580 mm. By using various technologies, we are in the position to offer you economical solutions for small series through to mass production.
Our services
  • Calculation and dimensioning of fans
  • Production of all technical drawings
  • Supervision of tool construction
  • Support for the design of the complete system
  • Load testing of the fans
Quality: actiro is certified according to DIN EN ISO 9001:2015
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HIGH TO MEDIUM PRESSURE IMPELLER

These impellers have a ratio of between 0.15 and 0.5 between intake opening diameter and external diameter. The angle of the blades is decisive for a given external diameter and revolutions per minute for the level of total pressure and of the static pressure ratio. The blades for high and medium-pressure impellers are usually backward inclined. There are designs with flat or drawn cover plates.
gezogene DS planparallele DS
drawn cover plates – usually more efficient flow coplanar cover plates –
have lower tooling costs
space
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LOW-PRESSURE IMPELLER/CYLINDRICAL ROTOR FANS
Cylindrical rotor fans are ideal for high volumes with revolutions per minute of up to 7,000 min-1. The ratio of inflow to outflow is the lowest at around 0.7 to 0.95.
Laufrad vorwärts Laufrad rückwärtsgekrümmt
curved forward (clockwise)

higher proportion of dynamic pressure and maximum total pressure

backward curved
(clockwise)

lower total pressure, but
high static pressure part
and better efficiencyspace
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SPECIAL IMPELLER
Wasserzerstäuber  
e.g. scrubbers  
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MATERIAL
Material Material Material
The material selection is based on the use of the fan. It is dependent on the medium being transported, the temperature and the particles in the air. Aluminium, steel alloys, stainless steel and also ceramic coatings are ideal.
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JOINING TECHNOLOGY, SHAFT SEATING
Joint   space
welding penning lock forming
Welding for steel Peening for aluminium and very high revolutions Lock forming for aluminium, stainless steel and steel alloys
Shaft seating
Axial geklemmt Nabeaufnahme
Axially clamped
... is the most precise seating, but the shaft must have a shoulder and a thread for the assembly 		Hub seating
...gives freedom of design for
the fixing of the fan on the shaft
(e.g. fitting key, tapered joint,
screw clamp, press fit, etc,).
 

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