Kaeser High Pressure N-Series Boosters

N-series boosters augment your existing system pressure in specific locations, elevating it up to 45 bar. Kaeser offers an extensive range of high-performance booster reciprocating compressors that work in perfect harmony with Kaeser rotary screw compressors and SIGMA PET AIR stations.

The N-series boosters are available with one or two cylinders and operate within the following performance parameters:

  • Initial pressure up to 13 bar – discharge pressure up to 45 bar
  • Flow rate: 0.27 – 5.49 m³/min

Compared to designing the entire compressed air supply system for higher pressure, the use of boosters is significantly more cost-effective for all applications that require process air with a higher degree of compression than the normal control air and supply air at specific locations. PET bottle production is an excellent example of such applications.

Your advantages

  • Continuous high-pressure operation:
    Innovative features such as oil pressure lubrication and intensified cylinder cooling ensure both long service life and low maintenance requirements as well as continuous system-compatible maximum pressure of 45 bar.
  • Exceptionally low oil requirement:
    The high quality cylinders are plateau-honed and feature an extra layer of wear protection. These details ensure low oil consumption over the entire service life.
  • For especially cool compressed air:
    The compressed air aftercoolers on the three-cylinder boosters are equipped with separate fans, which ensure low compressed air discharge temperatures. The boosters can be additionally equipped with water-cooled aftercoolers to attain even lower temperatures.



For lower demand

N 60 G to N 153 G boosters, air-cooled
N 60 G to N 153 G, air-cooled
The smaller models in this range are best suited to applications where low flow rates are needed at pressures up to 40 bar. These compressors are equipped with one- or two-cylinder compressor blocks and are driven by high efficiency motors with up to 4 kW capacity. The quality of these units is second to none as all compressor blocks are designed, manufactured and assembled by KAESER.

For medium to large demand

N 253 G to N 502 G boosters, air-cooled
N 253 G to N 502 G, air-cooled
When greater air flow rates are needed at pressures up to 45 bar then the mid-size and larger of the Kaeser booster models are the natural choice. At the heart of every one of these powerhouses is a precision machined two- or three-cylinder compressor block that delivers exceptional efficiency. Premium-efficiency electric drive motors up to 45 kW provide optimal energy efficiency (up to 18.5 kW: IE2, from 18.5 kW: IE3).

Example Layout

Component layout of a compressed air station with boosters up to 45 bar
Compressed air system with booster up to 45 bar
  1. Rotary screw compressor
  2. Air receivers
  3. Booster
  4. “High-pressure” air receiver
  5. “High-pressure” refrigeration dryer
  6. Pneumatic tools
  7. Low pressure network up to 13 bar
  8. Prefilter
  9. High-pressure microfilter
  10. Compressed air network at 45 bar
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