Performance, Precision, Partnership

BSD Series 1:1 Direct Drive Compressors

Complete unit

  • Ready-to-run
  • Fully automatic
  • Super sound-proofed
  • Vibration-damped
  • All panels powder-coated
  • For ambient temperatures up to +45 °C


Sound insulation

  • Panels lined with laminated mineral wool


Vibration dampening

  • Anti-vibration mounts
  • Dual anti-vibration mount



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



  • Directly coupled without gearing
  • High-flex coupling


Electric motor

  • Super premium efficiency IE4 motor
  • Premium quality German-made motor
  • IP 55
  • Insulation class F for greater power reserve
  • Pt100 winding temperature transducer for motor monitoring
  • Bearing lubrication from the outside


Electrical components

  • Control cabinet to IP 54
  • Control transformer
  • Siemens frequency converter
  • Volt-free contacts for ventilation control


Fluid and air flow

  • Dry air filter
  • Pneumatic inlet and venting valves
  • Cooling fluid reservoir with three-stage separator system
  • Pressure relief valve
  • Minimum pressure/check valve
  • ETM Electronic Thermal Management and eco fluid filter in coolant circuit
  • All fully piped
  • Flexible couplings


ETM Electronic Thermal Management ETM

  • Optionally available in water-cooled design with either plate-type or shell and tube heat exchanger


Refrigeration dryers

  • CFC-free
  • R 134a refrigerant
  • Fully insulated
  • Hermetically sealed refrigerant circuit
  • Scroll refrigerant compressor with energy-saving shut-down feature
  • Hot gas bypass control
  • Electronic condensate drain
  • Upstream centrifugal separator


Heat recovery (HR)

  • Optionally available with integrated heat recovery system (plate-type heat exchanger)




  • "Traffic-light" LED indicators show operational status at a glance
  • Plain text display
  • 30 selectable languages
  • Soft-touch keys with icons
  • Fully automated monitoring and control
  • Selection of Dual, Quadro, Vario and Continuous control as standard
  • Interfaces: Ethernet
  • Additional optional communications modules for: Profibus DP, Modbus, Profinet and DeviceNet
  • SD-card slot for data-logging and updates
  • RFID reader
  • Web server
  • Optionally available with SIGMA CONTROL BASIC