Kaeser – Rotary screw compressors with 1:1 direct drive DSD/DSDX

DSD and DSDX Rotary Screw Compressors – Equipment

Complete package

  • Ready for operation
  • Fully automatic
  • Super silenced
  • Vibration-damped
  • All panels powder-coated
  • For ambient temperatures up to +45 °C
  • Service-friendly design: Motor bearings can be lubricated externally (also applies to drive and fan motors).


  • Single stage with cooling fluid injection for optimal rotor cooling
  • Genuine KAESER rotary screw airend with energy-saving SIGMA profile
  • 1:1 Direct drive

Cooling fluid and air circuit

  • Dry air intake filter with pre-filtration
  • Inlet silencer
  • Inlet and vent valves, pneumatic
  • Cooling fluid separation tank with three-stage separation system
  • Safety valve
  • Minimum pressure check valve
  • Thermo management (ETM) and eco fluid filter in coolant circuit
  • Fluid and compressed air cooler (air-cooled as standard)
  • Two fan motors, one variable-speed
  • Kaeser centrifugal separator with electronically-controlled condensate drain for energy savings without pressure loss
  • Piping and centrifugal separator made of stainless steel
  • Optionally available water-cooled version: Fluid and compressed air aftercooler implemented as water-cooled plate or optionally available tube-type heat exchanger.

Heat recovery (Option)

  • Optionally available with integrated fluid/water plate-type heat exchanger and additional fluid thermostatic valve
  • External connections

Refrigeration dryer (DSD)

  • Contains fluorinated greenhouse gas R-513A
  • GWP (Global Warming Potential) 631
  • Refrigerant charge 1.35 kg
  • CO2 equivalent 0.85 t
  • With energy-saving shut-down feature
  • ECO-DRAIN electronic condensate drain
  • Upstream Kaeser centrifugal separator
  • Compressed air connection 65 PN 16

Electrical components

  • Super Premium Efficiency IE4 drive motor with three Pt100 temperature transducers for engine windings monitoring
  • Control cabinet to IP 54
  • Control cabinet ventilation
  • Automatic star-delta starter
  • Overload relays
  • Control transformer
  • Frequency converter for fan motor
  • SFC versions also with frequency converter for drive motor


  • “Traffic-light” LED indicators show operational status at a glance
  • Easy-to-read display
  • 30 selectable languages
  • Soft-touch icon buttons
  • Fully automatic monitoring and control
  • Dual, Quadro, Vario and Continuous control modes available as standard
  • Interfaces: Ethernet
  • Additional optional communication modules for: Profibus DP, Modbus, Profinet and DeviceNet
  • SD card slot for data logging and updates
  • RFID reader
  • Web server

Product PDF: Kaeser – DSD