Roots blowers

Excess pressure

Technical applications:

  • Water treatment plants
  • Fish Farm Tank Aeration
  • Fluidized bed drying
  • Gas movements up to 2.2 bar excess pressure – > ATEX possible
  • Granul conveying
  • Mixing plants
  • and many more


Sound insulation hood:

According to the applicable environmental guidelines, sound insulation must be provided for installed Roots blowers.

The standard sound measurements with IKS sound insulation hoods provided sound insulation of up to a maximum of 20 dbA.

The sound cabins are equipped with removable, locked parts or with hinge doors to facilitate the service work.

When using a sound insulation hood, is the compressor unit, together with the sound insulation hood, mounted on a base frame and can be transported together by means of a forklift.


  1. Intake filter
  2. Blower
  3. Noise suppressor
  4. Rubber expansion joints
  5. Check valve
  6. Safety valve
  7. Belt guard
  8. Electric motor
  9. Elastic feet
  10. Sound insulation hood
  11. Cooling fan
  12. Flange connection










Three lobes pump- Type RNT:

Structural features:

  • Rotary pistons consisting of three massive and dynamically balanced blades.
  • These rotary pistons rotate contact-free in a cast iron housing.
  • Continuously increasing compression achieved by the design of the housing -> pulsation is kept low right at the point of origin -> the gearbox is a heat-treated and refined helical gear according to DIN-6.
  • Gears that are mounted on the drive shaft with a conical seat without the use of a feather key.
  • Lubrication done by splash lubrication.
  • A process chamber, which is sealed off from the oil boxes with a multi-part labyrinth seal, with a condensate intermediate chamber.
  • Shaft seal which seals off the drive shaft












Flange DIN 2532

Feather key DIN 65885

Shaft tolerance <ø 50 ISA k6












Other pressures and performance data on request..















  • Performance data refers to: δ =1,2 Kg/m3 (P1=1 bar abs. t1=20ºC)
  • Tolerance for intake volume and absorbed power: +/- 5%
  • Sound pressure levels refer to a field measurement at a distance of 1 meter. -> Tolerance: +/- 2dB(A)
  • Δt °C = Increase of temperature

Contact & Information

CSK Stefan Gesellschaft m.b.H.

Steinbrechergasse 32-34
A-1220 Wien

+43 (1) 204 80 40
+43 (1) 202 57 00