Variable Speed Screw Compressor

Understanding variable speed screw compressor

A Variable speed screw compressor is a rotary screw air compressor that adjusts motor speed to match actual air demand in real-time. Unlike fixed-speed compressors that always run at full speed, a variable speed air compressor adapts its RPM and flow rate based on compressed air requirements. This reduces unnecessary energy waste, lowers electricity expenses, and increases compressor life.

At Loitha, we manufacture advanced variable speed drive compressors engineered for efficiency, reliability, and long-term savings. Whether you need oil-injected  screw compressors, our solutions are designed to maximize performance and reduce overall cost of ownership.

How Variable Speed Screw Compressor Works

Our variable speed drive rotary screw compressors use inverter technology to regulate motor speed. This means:

This speed technology delivers stable airflow, reduces wear and tear, and cuts energy consumption significantly compared to fixed-speed models.

Loitha Variable Speed Screw Compressor with VSD Technology
Industrial VSD Compressor compared to fixed speed compressors

Variable Speed Screw Compressors vs Fixed Speed Compressors

Studies show that choosing a Variable Speed compressor over a fixed-speed compressor can save industries tens of thousands of dollars in energy expenses across its lifetime.

Benefits of Choosing a Variable Speed Screw Compressor

Reduce Energy Consumption

Cut energy costs by up to 35%

Minimize Wear and Tear

Less strain on components compared to fixed-speed compressors

Lower Cost of Ownership

High efficiency reduces both operating and maintenance costs

Real-Time Adaptation

Adjusts motor speed to match air demand instantly

Efficiency and Reliability

Designed for maximum uptime and performance

Flexible Options

Available in oil-injected, belt-driven, and direct drive types of compressors

Applications Across Industries

Loitha’s variable speed air compressors are used in:

Whats makes us Unique?

HIGH QUALITY ASSESSORIES

Technical Parameter

Our variable speed compressors are available in multiple models, from 7.5 kW to 250 kW, with different working pressures, flow rates, and dimensions.

Each model is engineered for energy savings, energy efficient, reduced noise levels, and best-in-class dependability.

ModelMotor PowerWorking PressureFree Air FlowOuter DiameterNoise levelWeight Dimensions
L x W x H 
50HzkWHpBar gPsi gM3/min  cfmDNDbkgmm
AHD-10A7.51071011.2421/2″70±2200950 X 650 X 880
81161.139
101450.932
131880.725
AHD-15A111571011.6573/4″70±22101160 X 700 X 1100
81161.553
101451.346
131881.139
AHD-20A152071012.5883/4″70±22301160 X 700 X 1100
81162.381
101452.174
131881.967
AHD-30A223071013.81341″70±24151200 X 900 X 1150
81163.6127
101453.2113
131882.899
AHD-40A304071015.21841″70±24601400 X 900 X 1125
81165.0177
101454.5159
131883.8134
AHD-50A375071016.82401 1/2″78±26251560 X 1000 X 1365
81166.2219
101455.6198
131884.9173
AHD-60A456071017.32581 1/2″78±26951560 X 1000 X 1365
81167.0247
101456.0212
131885.6198
AHD-75A5575710110.03532″80±29801730 X 1100 X 1610
81169.1321
101458.5300
131887.6268
AHD-100A75100710113.54772″80±210001730 X 1100 X 1610
811612.6445
1014511.2396
1318810.0353
AHD-120A90120710116.15692″80±217002100 X 1430 X 1740
811615.0530
1014513.8487
1318812.3434
AHD-150A110150710121.07422 1/2″80±221502500 X 1450 X 1800
811619.8699
1014517.0600
1318815.3540
AHD-175A132175710125.28902 1/2″80±227502700 X 1580 X 1800
811624.0848
1014521.0742
1318818.3646
AHD-220A160220710128.710142 1/2″80±231502700 X 1580 X 1800
811627.6975
1014524.6869
1318821.5759
AHD-250A185250710132.011303″80±234502800 X 1830 X 1950
811630.51077
1014527.5971
1318824.8876
AHD-300A220300710136.712963″80±238502800 X 1830 X 1950
811634.51218
1014530.21067
1318827.8982
AHD-350A250350710142.014833″80±248503250 X 2130 X 2300
811640.51430
1014538.11345
1318834.61222
           
Compression stage: single stage
Ambient temperature: -5–+45℃
Cooling model: Air –Cooling
Discharge temperature(℃): Ambient temperature+15℃
Drive method: Direct coupled
Electricity(V/ph/Hz): 380/3/50
Starting method: Star-delta starting

Why Loitha for Industrial Air Compressors?

  • Advanced VSD Technology – Reduces energy expenses and maximizes efficiency
  • German Engineering – High-quality accessories ensure durability
  • Versatile Range – Choose from piston compressors, oil-free compressors, and screw compressors with variable speed technology
  • Proven Reliability – Industry-leading warranty and dependable after-sales service

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