The KAESER SIGMA PROFILE,
introduced in 1975 and continuously optimised, brings
power savings of up to 15 percent over conventional
rotary screw profiles.
All KAESER airends are equipped with rotors having
this energy-saving profile. They are operated at
their best specific working point to ensure highest
energy-efficiency.
The generously-sized, precision-aligned roller bearings
and close-tolerance machining guarantee long life
cycles and outstanding reliability.
•
Up to 15 percent
energy is saved by the optimised performance
of the SIGMA PROFILE and excellent
flow characteristics of the inlet channels.
•
Very long operational
life due to precision-aligned, top-quality
rolling bearings. The bearings used are designed
for generous reserve.
•
High reliability
resulting from close tolerance production
on high-precision grinding machines.
•
The airends are
designed and produced in-house by KAESER.
Airend
with SIGMA Rotor Profile
The heart of
a screw-compressor is the Airend or screw-element.
The rotors of the KAESER Airend are shaped
according to the proprietary world renowned
Sigma-Profile.
Picture of asymmetrical profile
Picture of Sigma profile
Most screw compressors in the world are using
the asymmetric rotor profile, which was first
developed in 1962. KAESER was not satisfied
with the efficiency of this rotor profile
and decided to develop their own rotor profile.
Years of research culminated in a decisive
break through with the development of the
Sigma Profile. A profile, which made it possible
to reduce the power, needed to generate compressed
air with up to 20%.
N.B. Power consumption contributes to about
80% of the costs of compressed air. With these
savings, the complete investment can be recovered
in only a few years. Other advantages of the
Sigma profile is the up to 20% lower heat
development, which made it possible for KAESER
to use simple 100% air-cooled compressors
for almost all types. And the very efficient
Sigma profile made it possible to efficiently
compress air up to 1 5 bar in one single stage.
With conventional systems to reach a similar
efficiency is often only possible when using
complicated 2-stage compression.
