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GA+ series

GA 30⁺-75⁺ screw compressors (30kW - 75kW)

The new GA⁺ comes with an IE4 motor, a new element and a suite of smart features to give you more air and more energy savings.

GA 30⁺-75⁺ oil-injected screw compressor

Key technical specifications

Capacity FAD

256 m³/h - 924 m³/h

Installed motor power

30 kW - 75 kW

Capacity FAD l/s

71 l/s - 257 l/s

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Oil-injected rotary screw compressors
GA 30+-90/GA 37-110 VSD+ (30-110 kW/40-150 hp)
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Description

GA 30⁺-75⁺: the gold standard in fixed-speed rotary screw compressors

The GA 30⁺-75⁺ is our fixed-speed oil-injected rotary screw compressor that sets the industry standard. It gives you more of the things that really matter: more energy savings, more air, and a longer lifetime. Its state-of-the-art compression element and a host of advanced features ensure maximum performance with best-in-class efficiency:

  • 100% maintenance-free drive system, totally protected against dirt and dust. New state-of-the-art hybrid bearings extend its lifetime by 33%.
  • IE4/NEMA Super Premium Efficiency motor, designed for continuous operation in harsh environments.
  • Oversized coolers, increase reliability in tough conditions.
  • Robust, high-efficiency spin-on oil filter, with 8,000-hour service interval (GA 55⁺/GA 75⁺).
  • Heavy-duty air intake filter, offers an 8,000-hour lifetime (GA 55⁺/GA 75⁺).
  • Smart no-loss drain, with automatic removal of condensate, auto-cleaning, and detection of potential issues (GA 55⁺/GA 75⁺).
  • Smart Temperature Control System, calculates and implements in real time the ideal oil injection temperature to increase compressor efficiency and eliminate the risk of condensation (GA 55⁺/GA 75⁺).
  • Intelligent sensors, monitor the lifetime of the inlet filter, the oil separator, and the oil filter (GA 55⁺/GA 75⁺).
  • Smart unload algorithm, monitors pressure fluctuations in real time to reduce the running time in unload and achieve maximum energy savings (GA 55⁺/GA 75⁺).
  • Elektronikon Touch with SMARTLINK, allows for remote monitoring and offers warning indications, compressor shut-down and maintenance scheduling.
  • EQ2i multiple compressor control, integrated as standard.

Advanced control and connectivity

Elektronikon® Touch controller
Elektronikon® Touch controller
The state-of-the-art Elektronikon® Touch controller offers delayed second stop, week schedules, and multiple compressor control. SMARTLINK connectivity allows for remote monitoring; OPC UA for seamless integration with a connected production floor.
 
The state-of-the-art Elektronikon® Touch controller offers delayed second stop, week schedules, and multiple compressor control. SMARTLINK connectivity allows for remote monitoring; OPC UA for seamless integration with a connected production floor.

Smart operation

The STC system, intelligent sensors, a smart unload algorithm, a smart drain. The GA⁺ is packed with revolutionary intelligent features that boost its performance, lifetime and efficiency. 

Get a free quote from our Atlas Copco experts

Benefits

Technical benefits

More air, less energy use
A new screw element and IE4-efficiency motor deliver even more air at a lower cost. The STC system achieves maximum compression efficiency by optimizing the oil injection temperature based on actual running conditions.
Superior reliability
Innovative hybrid bearings reduce wear and extend the lifetime of the drivetrain by 33%. Oversized coolers ensure reliable performance, even in the toughest conditions.
Atlas Copco GA 75+ screw compressor side view
Low maintenance
Designed for low-maintenance operation and easy service, the GA⁺ has an extra-long service interval of 8,000 hours. 
Sustainability
Combine the superior efficiency of the GA⁺ with energy recovery to significantly lower your energy use and your environmental footprint. 

Specification

Technical specification

Technical Property Value

Capacity FAD

256 m³/h - 924 m³/h

Installed motor power

30 kW - 75 kW

Capacity FAD l/s

71 l/s - 257 l/s

*50Hz model

GA 30⁺-75⁺ (50Hz) Techincal Specifications

Compressor type Pressure variant Max. working pressure WorkPlace Capacity FAD Installed motor power Noise level
    bar(e) psig l/s m³/h cfm kW hp dB(A)
GA 30+ 7.5 7.5 109 99 357 210 30 40 66
  8.5 8.5 123 90 325 191 30 40 66
  10 10 145 83 297 175 30 40 66
  13 13 189 71 256 151 30 40 66
GA 37+ 7.5 7.5 109 126 452 266 37 50 67
  8.5 8.5 123 119 427 251 37 50 67
  10 10 145 107 385 227 37 50 67
  13 13 189 89 321 189 37 50 67
GA 45+ 7.5 7.5 109 151 543 320 45 60 68
  8.5 8.5 123 144 519 306 45 60 68
  10 10 145 131 472 278 45 60 68
  13 13 189 105 377 222 45 60 68
GA 55+ 7.5 7.5 109 191 688 405 55 75 69
  8.5 8.5 123 181 650 383 55 75 69
  10 10 145 167 600 353 55 75 69
  13 13 189 139 500 294 55 75 69
GA 75+ 7.5 7.5 109 257 924 544 75 100 71
  8.5 8.5 123 237 853 502 75 100 71
  10 10 145 218 784 462 75 100 71
  13 13 189 189 681 401 75 100 71

GA 30⁺-75⁺ (60Hz) Technical Specifications

Compressor type Pressure variant Max. working pressure WorkPlace Capacity FAD Installed motor power Noise level
    bar(e) psig l/s m³/h cfm kW hp dB(A)
GA 30+ 100 7.4 107 101 364 214 30 40 66
  125 9.1 132 92 329 194 30 40 66
  150 10.8 157 83 298 176 30 40 66
  175 12.5 181 75 269 158 30 40 66
GA 37+ 100 7.4 107 124 445 262 37 50 67
  125 9.1 132 113 405 239 37 50 67
  150 10.8 157 103 371 219 37 50 67
  175 12.5 181 89 319 188 37 50 67
GA 45+ 100 7.4 107 151 543 319 45 60 68
  125 9.1 132 139 501 295 45 60 68
  150 10.8 157 131 471 277 45 60 68
  175 12.5 181 114 410 241 45 60 68
GA 55+ 100 7.4 107 193 694 409 55 75 69
  125 9.1 132 180 648 381 55 75 69
  150 10.8 157 163 587 346 55 75 69
  175 12.5 181 144 518 305 55 75 69
GA 75+ 100 7.4 107 256 922 543 75 100 71
  125 9.1 132 237 853 502 75 100 71
  150 10.8 157 212 763 449 75 100 71
  175 12.5 181 191 689 405 75 100 71

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Additional readings

Back to basics: what is a screw compressor?

What is a rotary screw compressor?

Read more about rotary screw compressors

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