Mid-sized rotary screw compressors from 18 to 110 kW


Energy-efficient rotary screw compressors – Design is in the details

For us, a compressed air supply using rotary screw compressors represents the centrepiece of your production process. Our ASD, BSD, CSD and CSD(X) series ensure a dependable compressed air supply for your processes with unprecedented levels of efficiency. 

These systems are perfect team players that can be integrated into existing control systems via the SIGMA AIR MANAGER 4.0. To ensure that you achieve the exact compressed air supply you require, our rotary screw compressors are available in different variants:

  • Base model
  • with refrigeration dryer for high compressed air quality: T model
  • with variable-speed drive for optimum efficiency and a broad control range: SFC model
  • with synchronous reluctance motor: Significantly greater efficiency – especially in the partial load range – than comparable asynchronous systems enables considerable energy savings.
  • Complete systems with integrated refrigeration dryer and variable-speed drive: T SFC models 
Our experts will be glad to assist you in selecting the right model for your needs.

Your benefits

  • Energy savings:
    Fixed-speed systems with asynchronous motors which meet the IE4 efficiency class. Frequency-controlled rotary screw compressors are equipped with IE5 motors and meet the IES2 system efficiency class.
  • Longer service life:
    Electronic Thermo Management dynamically controls the fluid temperature on compressors from the ASD, BSD, CSD and CSD(X) series. This not only saves additional energy, but also reliably prevents condensate formation and the associated moisture damage.
  • Heat recovery:
    Our rotary screw compressors convert 100% of the electrical drive energy supplied to them into heat energy. 96% of this energy remains available for heat recovery. Use this potential to your advantage!

CSD(X) – Power converted into efficiency

CSDX rotary screw compressors from KAESER KOMPRESSOREN

The new generation of oil-injected rotary screw compressors from KAESER’s CSD(X) series now delivers performance with even greater precision and efficiency. The integrated package consisting of motor, timing gears and airend permits the most energy-efficient airend speed to be selected for each operating point. The installed Electronic Thermal Management (ETM) and newly-designed inlet valve, together with the larger inlet filter, significantly enhance rotary screw compressor efficiency. The frequency-controlled fan ensures further energy savings and a reduced CO2 footprint, since it only delivers as much cooling air as is actually required.

The six new pressure variants for the CSD(X).
Six pressure variants significantly increase flow rate and, most importantly, enable precision adjustment to your individual pressure requirements.

For even greater energy efficiency, KAESER always selects the most efficient drive possible. Fixed-speed systems are equipped with asynchronous motors, which meet the best possible efficiency class of IE4 for this type of drive. Frequency-controlled SFC systems use IE5 motors and also meet the requirements for IES2 system efficiency, thereby achieving the highest possible efficiency rating in accordance with the European standard IEC 61800-9.

 

Our rotary screw compressors up to 110 kW in detail

Safely avoid condensation
Electronic Thermo Management to prevention condensate formation.

Electronic Thermo Management (ETM) enables the SIGMA CONTROL 2 compressor controller to reliably prevent condensate formation. Thanks to the frequency-controlled fan unit, the SIGMA CONTROL 2 can also adjust the CSD(X)’s cooling air flow in accordance with ambient conditions. This means that fan speed can be reduced at low temperatures or during partial load operation, thereby consuming significantly less energy.

Efficient and reliable operation
SIGMA CONTROL 2 compressor controller

The integrated SIGMA CONTROL 2 controller coordinates compressed air generation and ensures efficient, reliable machine operation. Moreover, it guarantees perfect interaction within the integrated system as a whole. All relevant components and operating states are monitored and evaluated. A multitude of communications functions are available to the operator, including the option of connecting the machine to other control technology (SCADA).

Energy efficiency is paramount
Save with KAESER life-cycle management

The purchase price and service costs account for just a fraction of the total lifetime cost of a compressor. Energy accounts for the lion's share of the system’s costs. As a leading compressed air systems provider, we offer individual planning tailored to your exact needs, an energy-efficient compressed air station and reliable service. We are there to partner you throughout the entire service life of your compressed air station.

High compressed air quality with low energy consumption
CSDX rotary screw compressor with add-on dryer.

Do you wish to protect your compressed air network from pipe corrosion, equipment failures, and product damage? Then an add-on dryer for ASD, BSD, CSD, and CSD(X) series rotary screw compressors is just what you need.    

The robust and compact design of the refrigeration dryer allows for reduced refrigerant volume and therefore the CO2 equivalent. Its energy-saving control only allows operation when compressed air is flowing through the unit. This ensures application-appropriate compressed air quality with highest possible efficiency.

Technical specifications ASD

Standard version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
ASD 35 7.5 3.16 8.5 18.5 1,460 x 900 x 1,530 G 1¼ 65 610
10 2.63 12
ASD 40 7.5 3.92 8.5 22 1,460 x 900 x 1,530 G 1¼ 66 655
10 3.13 12 621
13 2.58 15
ASD 50 7.5 4.58 8.5 25 1,460 x 900 x 1,530 G 1¼ 66 695
10 3.85 12 697
13 3.05 15 663
ASD 60 7.5 5.53 8.5 30 1,460 x 900 x 1,530 G 1¼ 69 750
10 4.49 12 712
13 3.71 15 714

T version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Refrigeration dryer Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
ASD 35 T 7.5 3.16 8.5 18.5 ABT 60 1,770 x 900 x 1,530 G 1¼ 65 705
10 2.63 12
ASD 40 T 7.5 3.92 8.5 22 ABT 60 1,770 x 900 x 1,530 G 1¼ 66 750
10 3.13 12 716
13 2.58 15
ASD 50 T 7.5 4.58 8.5 25 ABT 60 1,770 x 900 x 1,530 G 1¼ 66 790
10 3.85 12 792
13 3.05 15 758
ASD 60 T 7.5 5.53 8.5 30 ABT 60 1,770 x 900 x 1,530 G 1¼ 69 845
10 4.49 12 807
13 3.71 15 809

SFC version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
ASD 35 SFC 7.5 0.88 - 4 8.5 18.5 1,540 x 900 x 1,530 G 1¼ 67 700
ASD 40 SFC 7.5 1.05 - 4.64 8.5 22 1,540 x 900 x 1,530 G 1¼ 68 710
ASD 50 SFC 7.5 1.07 - 5.27 8.5 25 1,540 x 900 x 1,530 G 1¼ 68 755
10 1 - 4.58 13 757
13 0.93 - 3.82
ASD 60 SFC 7.5 1.26 - 6.17 8.5 30 1,540 x 900 x 1,530 G 1¼ 70 795
10 1 - 4.76 15 759
13 0.93 - 4.14

T-SFC version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Refrigeration dryer Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
ASD 35 T SFC 7.5 0.88 - 4 8.5 18.5 ABT 60 1,850 x 900 x 1,530 G 1¼ 67 795
ASD 40 T SFC 7.5 1.05 - 4.64 8.5 22 ABT 60 1,850 x 900 x 1,530 G 1¼ 68 805
ASD 50 T SFC 7.5 1.07 - 5.27 8.5 25 ABT 60 1,850 x 900 x 1,530 G 1¼ 68 850
10 1 - 4.58 13 852
13 0.93 - 3.82
ASD 60 T SFC 7.5 1.26 - 6.17 8.5 30 ABT 60 1,850 x 900 x 1,530 G 1¼ 70 890
10 1 - 4.76 15 854
13 0.93 - 4.14

Add-on refrigeration dryer

Model Power consumption kW Pressure dew point °C Refrigerant Global warming potential Refrigerant volume kg Refrigerant mass as CO2 equivalent t Hermetic refrigeration circuit
ABT 60 0.8 3 R-513A 631 0.75 0.5 -

Technical specifications BSD

Standard version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
BSD 65 7.5 5.65 8.5 30 1,590 x 1,030 x 1,700 G 1½ 69 970
10 4.52 12 940
13 3.76 15
BSD 75 7.5 7 8.5 37 1,590 x 1,030 x 1,700 G 1½ 70 985
10 5.6 12
13 4.43 15 955
BSD 83 7.5 8.16 8.5 45 1,590 x 1,030 x 1,700 G 1½ 71 1,060
10 6.85 12 1,015
13 5.47 15

T version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Refrigeration dryer Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
BSD 65 T 7.5 5.65 8.5 30 ABT 83 1,990 x 1,030 x 1,700 G 1½ 69 1,100
10 4.52 12 1,070
13 3.76 15
BSD 75 T 7.5 7 8.5 37 ABT 83 1,990 x 1,030 x 1,700 G 1½ 70 1,115
10 5.6 12
13 4.43 15 1,085
BSD 83 T 7.5 8.16 8.5 45 ABT 83 1,990 x 1,030 x 1,700 G 1½ 71 1,190
10 6.85 12 1,145
13 5.47 15

SFC version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
BSD 75 SFC 7.5 1.54 - 7.44 10 37 1,665 x 1,030 x 1,700 G 1½ 72 1,020
10 1.51 - 6.51
13 1.16 - 5.54 15 990

T-SFC version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Refrigeration dryer Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
BSD 75 T SFC 7.5 1.54 - 7.44 10 37 ABT 83 2,065 x 1,030 x 1,700 G 1½ 72 1,150
10 1.51 - 6.51
13 1.16 - 5.54 15 1,120

Add-on refrigeration dryer

Model Power consumption kW Pressure dew point °C Refrigerant Global warming potential Refrigerant volume kg Refrigerant mass as CO2 equivalent t Hermetic refrigeration circuit
ABT 83 0.9 3 R-513A 631 1.2 0.8 -

Technical specifications CSD

Standard version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
CSD 90 6 9.61 6 45 1,790 x 1,100 x 1,900 G 2 68 1,340
7.5 8.85 7.5 67
8.5 8.45 8.5
10 7.6 10
12 6.63 12
CSD 110 6 11.4 6 55 1,790 x 1,100 x 1,900 G 2 71 1,410
7.5 10.63 7.5 70
8.5 10.17 8.5 69
10 9.3 10
12 8.2 12
15 7.05 15
CSD 130 6 14.7 6 75 1,790 x 1,100 x 1,900 G 2 73 1,600
7.5 12.9 7.5 72
8.5 12 8.5 1,500
10 11.1 10 71
12 9.95 12 69
15 8.26 15

T version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Refrigeration dryer Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
CSD 90 T 6 9.61 6 45 ABT 105 2,210 x 1,100 x 1,900 G 2 68 1,540
7.5 8.85 7.5 67
8.5 8.45 8.5
10 7.6 10
12 6.63 12
CSD 110 T 6 11.4 6 55 ABT 105 2,210 x 1,100 x 1,900 G 2 71 1,610
7.5 10.63 7.5 70
8.5 10.17 8.5 69
10 9.3 10
12 8.2 12
15 7.05 15
CSD 130 T 6 14.7 6 75 ABT 125 2,210 x 1,100 x 1,900 G 2 73 1,800
7.5 12.9 7.5 72
8.5 12 8.5 1,700
10 11.1 10 71
12 9.95 12 69
15 8.26 15

SFC version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
CSD 90 SFC 8.5 1.93 - 8.18 8.5 45 1,840 x 1,100 x 1,900 G 2 71 1,370
12 1.73 - 6.62 12 68
CSD 110 SFC 8.5 2.27 - 9.9 8.5 55 1,840 x 1,100 x 1,900 G 2 70 1,390
12 1.86 - 8.25 12 69
15 1.53 - 7 15
CSD 130 SFC 8.5 2.86 - 12.15 8.5 75 1,840 x 1,100 x 1,900 G 2 73 1,420
12 2.26 - 10.47 12 72
15 1.83 - 9.04 15 70

T-SFC version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Refrigeration dryer Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
CSD 90 T SFC 8.5 1.93 - 8.18 8.5 45 ABT 105 2,260 x 1,100 x 1,900 G 2 71 1,570
12 1.73 - 6.62 12 68
CSD 110 T SFC 8.5 2.27 - 9.9 8.5 55 ABT 105 2,260 x 1,100 x 1,900 G 2 70 1,590
12 1.86 - 8.25 12 69
15 1.53 - 7 15
CSD 130 T SFC 8.5 2.86 - 12.15 8.5 75 ABT 125 2,260 x 1,100 x 1,900 G 2 73 1,620
12 2.26 - 10.47 12 72
15 1.83 - 9.04 15 70

Add-on refrigeration dryer

Model Power consumption kW Pressure dew point °C Refrigerant Global warming potential Refrigerant volume kg Refrigerant mass as CO2 equivalent t Hermetic refrigeration circuit
ABT 105 0.92 3 R-513A 631 1.45 0.9 -
ABT 125 1.3 3 R-513A 631 1.65 1 -

Technical specifications CSDX

Standard version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
CSDX 145 6 15.85 6 75 2,100 x 1,280 x 1,950 G 2½ 72 1,890
7.5 15.4 7.5
8.5 14.2 8.5
10 12.8 10 71
12 11.63 12 1,790
CSDX 175 6 19.5 6 90 2,100 x 1,280 x 1,950 G 2½ 76 2,030
7.5 18.1 7.5 75
8.5 16.7 8.5 72
10 15.5 10 74
12 13.85 12
15 12.1 15 1,930

T version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Refrigeration dryer Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
CSDX 145 T 6 15.85 6 75 ABT 200 2,520 x 1,280 x 1,950 G 2½ 72 2,170
7.5 15.4 7.5
8.5 14.2 8.5
10 12.8 10 71
12 11.63 12 2,070
CSDX 175 T 6 19.5 6 90 ABT 200 2,520 x 1,280 x 1,950 G 2½ 76 2,310
7.5 18.1 7.5 75
8.5 16.7 8.5 72
10 15.5 10 74
12 13.85 12
15 12.1 15 2,210

SFC version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
CSDX 145 SFC 8.5 3.5 - 13.73 8.5 75 2,100 x 1,280 x 1,950 G 2½ 72 1,800
CSDX 175 SFC 8.5 3.75 - 16.22 8.5 90 2,100 x 1,280 x 1,950 G 2½ 73 1,870
12 3.37 - 13.63 12 72
CSDX 200 SFC 8.5 3.24 - 19.8 10 110 2,150 x 1,280 x 1,950 G 2½ 75 2,100
10 3.57 - 18.6
12 3.92 - 17 15
15 4.38 - 15

T-SFC version

Model Working pressure bar Flow rate complete system at working pressure m³/min Max. positive pressure bar Nominal motor output kW Refrigeration dryer Dimensions
W x D x H mm 		Compressed air connection Sound pressure level dB(A) Weight kg
CSDX 145 T SFC 8.5 3.5 - 13.73 8.5 75 ABT 200 2,520 x 1,280 x 1,950 G 2½ 72 2,080
CSDX 175 T SFC 8.5 3.75 - 16.22 8.5 90 ABT 200 2,520 x 1,280 x 1,950 G 2½ 73 2,150
12 3.37 - 13.63 12 72
CSDX 200 T SFC 8.5 3.24 - 19.8 10 110 ABT 200 2,570 x 1,280 x 1,950 G 2½ 75 2,380
10 3.57 - 18.6
12 3.92 - 17 15
15 4.38 - 15

Add-on refrigeration dryer

Model Power consumption kW Pressure dew point °C Refrigerant Global warming potential Refrigerant volume kg Refrigerant mass as CO2 equivalent t Hermetic refrigeration circuit
ABT 165 1.38 3 R-513A 631 1.5 0.9 -
ABT 200 1.6 3 R-513A 631 1.1 0.69 -

Vallourec
A great success!

Compressed air for safety

Kaeser rotary screw compressors ensure reliable and energy-efficient production of giant steel tubes weighing tons at Vallourec.

Reference project: Vallourec
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