Skip to main content

ESD Series

The ESD series rotary screw compressors set the standard for compressed air efficiency and availability. These class-defined compressors have been designed, in every aspect, to uphold exceptional levels of energy efficiency, with multiple features that work to make them environmentally friendly. Additionally, these compressors have been created with engineers in mind as they are extremely service friendly and have excellent accessibility.

Key benefits of the ESD Series include:

  • Saving is the standard Providing the foundation for energy efficiency are the flow-optimised and further refined SIGMA PROFILE rotors. Likewise, the IE4 drive motors and the KAESER’s 1:1 drive design work to maximise the energy efficiency and eliminate the transmission losses. Last, but not least, the innovative SIGMA CONTROL 2 compressor controller achieves additional energy savings through the use of a variety of specially developed control options. 
  • Designed for high-efficiency, industrial compressed air stations - The ESD series rotary screw compressor is the ideal compressed air solution for a range of industrial applications. This is due to the internal SIGMA CONTROL 2 compressor controller, which offers numerous communication interfaces. When connected within the KAESER SIGMA NETWORK, it allows flawless communication with advanced master controllers, such as KAESER’s SIGMA AIR MANAGER 4.0, and in-hour centralised control systems. 
  • Service-friendly and accessible - The distinctive modern appearance of these compressors is complemented by the component layout, which has been intelligently designed to enhance the ease of operation and serviceability. All service and maintenance points are easy to reach and are directly accessible from the front of the unit. Ultimately, this saves the time of service work and maximises compressed air system availability.
  • Electronic Thermo Management (ETM) - The ETM system is powered via an electric motor and controls fluid temperature to ensure high energy efficiency is achieved. There is an additional ETM system built into the ESD package if heat recovery is used, which enables heat recovery to be better adapted to the customer’s exact requirements.
ESD Main Image

ESD Series - System Specifications ...

ESD Series - Energy savings in every detail


At the heart of every ESD system lies a premium quality airend featuring KAESER’s SIGMA PROFILE rotors. Operating at low speed, KAESER’s airends are equipped with flow-optimised rotors for superior efficiency.


The internal SIGMA CONTROL 2 controller ensures efficient compressor control and monitoring at all times. The large display and RFID reader provide easy communication and maximum security. Variable interfaces enable a seamless networking capability.

Tomorrow’s technology, today

KAESER is currently the only compressed air systems provider to equip its compressors with super-premium efficiency IE4 motors as standard, thereby delivering maximum performance and energy efficiency.

Correct temperature assured

According to operating conditions, the innovative Electronic Thermo Management (ETM) system dynamically controls fluid temperature to ensure the safe prevention of condensate accumulation and also boosts energy efficiency.


ESD SFC Series - Compressor with variable speed drive

Optimised specific power

The variable speed rotary screw compressor is the most heavily loaded piece of equipment in every compressor station. ESD-SFC models are therefore designed to provide maximum efficiency without running at extreme speeds. This saves energy and maximises service life.

Precision pressure control 

The flow rate can be adjusted within the control range according to pressure to suit actual compressed air demand. This keeps the operating pressure to within ±0.1 bar. This allows maximum pressure to be reduced which saves both energy and money.

Separate SFC control cabinet 

The SFC (SIGMA FREQUENCY CONTROL) variable speed drive is housed in its own control cabinet to shield it from heat from the compressor. A separate fan keeps operating temperatures in the optimum range to ensure maximum performance and service life.


It goes without saying that the SFC control cabinet and SIGMA CONTROL 2 are tested and certified both as individual components and as a complete system to EMC directive EN 55011 for Class A1 industrial power supplies.