China Standard Industrial Stationary Low Noise 380V 3 Phase Direct Driven AC Power Oilless Rotary Screw Air Compressor portable air compressor

Product Description


Product Description

Model SGD 18
Type of Cooling   Air Cooling/Water cooling
Working Pressure psig 102 116 145 174
bar 7 8 10 12
Air Delivery cfm 113.0 105.9 95.3 84.7
m3/min 3.2 3.0 2.7 2.4
Motor Power kw/hp 18.5/25
Starting Mode    Y-Δ
Type of Driving   Driect driven
Air Outlet Pipe Diameter    1″
Voltage   380V / 220V / 440V / 415V 
Can be customized
Exhaust Oil Volum   <3ppm
Noise db 65±2
Outlet Air Humidity ºC ambient temperature+15ºC


-Simple, Compact Design:
Sturdy construction with few moving parts, easy to access and maintain ,easy to replace parts, very reliable and durable.

-Direct Axial Coupling to the Motor:
Direct coupling is possible because the high compression ratio permit slow rotation speeds, eliminating the need for transmission or gears. Fewer parts, mean slower energy dissipation and simplified maintenance.

-Low Rotation Speeds:
Lower speeds reduce vibration, thus diminishing noise and wear, lowering temperature and eliminating the need for foundations.

-Low Cycle Temperature:
Lower temperatures reduce wear, coolant consumption and leakage caused by distension of parts.Less energy is needed for cooling, and the purity of delivered air is enhanced.

-Low Need for Maintenance:
With fewer parts suffering little wear, single-stage rotary units offer cleaner and more reliable operation, significantly reducing maintenance needs.

Product Parameters

Direct Drive Screw Air Compressor
Model SGD 22 SGD 30 SGD 37 SGD 45 SGD 55 SGD 75 SGD 90 SGD 185 SGD 220 SGD 250 SGD 315 SGD 355 SGD 400 SGD 450 SGD 500 SGD 560 SGD 630
Capacity / Pressure 3.8 / 0.7 5.2 / 0.7 6.4 / 0.7 8.0 / 0.7 10.5 / 0.7 13.6 / 0.7 16.3 / 0.7 32.5 / 0.7 38.6 / 0.7 43.9 / 0.7 56.0 / 0.7 64.0 / 0.7 74.0 / 0.7 85.0 / 0.7 93.0 / 0.7 105.0 / 0.7 125.0 / 0.7
(m³/min / Mpa) 3.5 / 0.8 5.0 / 0.8 6.1 / 0.8 7.7 / 0.8 9.8 / 0.8 13.3 / 0.8 16.0 / 0.8 30.2 / 0.8 36.4 / 0.8 42.5 / 0.8 53.0 / 0.8 62.0 / 0.8 72.0 / 0.8 82.0 / 0.8 91.0 / 0.8 100.0 / 0.8 120.0 / 0.8
3.2 / 1.0 4.3 / 1.0 5.7 / 1.0 7.0 / 1.0 8.7 / 1.0 11.6 / 1.0 14.6 / 1.0 27.0 / 1.0 33.1 / 1.0 38.8 / 1.0 49.0 / 1.0 57.6 / 1.0 62.0 / 1.0 70.0 / 1.0 82.0 / 1.0 85.0 / 1.0 100.0 / 1.0
2.9 / 1.3 3.7 / 1.3 5.1 / 1.3 5.8 / 1.3 7.5 / 1.3 9.8 / 1.3 12.3 / 1.3 22.5 / 1.3 30.5 / 1.3 34.6 / 1.3 43.0 / 1.3 49.0 / 1.3 56.5 / 1.3 60.5 / 1.3 68.0 / 1.3
Motor Power (KW) 22 30 37 45 55 75 90 185 220 250 315 355 400 450 500 560 630
Horsepower 30 40 50 60 75 100 125 250 300 340 420 480 540 600 670 750 840
Noise dB(A) 69±2 69±2 70±2 72±2 73±2 75±2 75±2 78±2 78±2 78±2 80±2 82±2 83±2 84±2 86±2 88±2 88±2
Air Outlet G1 1/4 G1 1/4 G1 1/2 G1 1/2 G2 G2 G2 DN80 DN100 DN100 DN125 DN125 DN150 DN150 DN200 DN200 DN200
Pipe Diameter 720 900 1350 1400 1700 3330 4300 4600 6500 7000 7500
Weight (kg) 520 650 1500 1500 1650 1800 2000 3000 3000 3000 3800 3800 4200 8100 8500 9000 9000
Housing dimension L(mm) 1300 1500 1000 1000 1170 1200 1200 1800 1980 1980 2280 2280 2200 4650 4650 4650 4650
W(mm) 850 1000 1300 1300 1440 1500 1600 2050 1900 1900 2248 2248 2350 2050 2150 2150 2150
H(mm) 1150 1300 180 191 320 330 400 600 900 900 2120 2120 2120 2120
Cooling air Flow 100 100 3 5 5 7 12 20 20 30 30 35 35 35 35 35
( m³.min) 23 23 23 23 100 145 145 200 200 250 250 250 250 250

Company Profile




-What checking/controlls do you do before shipping out the machines?

We will test pressure,airflow,oil leakage,all parts assembled tight, Vibration performance and temperature before packed.

-What is the rotor speed for the air end?

-Can change the voltage to 415v/220v/575v/6000v, 50HZ/60HZ?
Yes, it can changed.

-Can you offer both air cooled and water cooled?
Yes, we can.

-Can you offer 2 stage,four stage IP54 motor?
Yes, we can offer.

-What is brand of the inverter?
Using Holip/Yisit/Xihu (West Lake) Dis.g,Price will be higher if use ABB/SIEMENS/TECO brand.

-Will you use rubber pipe for air and oil system?
Use steel hard and flexible pipe.

-Which kind of oil will you used for?
46#mineral oil.

-Do you offer touch control panel,Remote monitoring?
Our Services



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Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Angular
Structure Type: Closed Type
Installation Type: Stationary Type


air compressor

How does variable speed drive technology improve air compressor efficiency?

Variable Speed Drive (VSD) technology improves air compressor efficiency by allowing the compressor to adjust its motor speed to match the compressed air demand. This technology offers several benefits that contribute to energy savings and enhanced overall system efficiency. Here’s how VSD technology improves air compressor efficiency:

1. Matching Air Demand:

Air compressors equipped with VSD technology can vary the motor speed to precisely match the required compressed air output. Traditional fixed-speed compressors operate at a constant speed regardless of the actual demand, leading to energy wastage during periods of lower air demand. VSD compressors, on the other hand, ramp up or down the motor speed to deliver the necessary amount of compressed air, ensuring optimal energy utilization.

2. Reduced Unloaded Running Time:

Fixed-speed compressors often run unloaded during periods of low demand, where they continue to consume energy without producing compressed air. VSD technology eliminates or significantly reduces this unloaded running time by adjusting the motor speed to closely follow the air demand. As a result, VSD compressors minimize energy wastage during idle periods, leading to improved efficiency.

3. Soft Starting:

Traditional fixed-speed compressors experience high inrush currents during startup, which can strain the electrical system and cause voltage dips. VSD compressors utilize soft starting capabilities, gradually ramping up the motor speed instead of instantly reaching full speed. This soft starting feature reduces mechanical and electrical stress, ensuring a smooth and controlled startup, and minimizing energy spikes.

4. Energy Savings at Partial Load:

In many applications, compressed air demand varies throughout the day or during different production cycles. VSD compressors excel in such scenarios by operating at lower speeds during periods of lower demand. Since power consumption is proportional to motor speed, running the compressor at reduced speeds significantly reduces energy consumption compared to fixed-speed compressors that operate at a constant speed regardless of the demand.

5. Elimination of On/Off Cycling:

Fixed-speed compressors often use on/off cycling to adjust the compressed air output. This cycling can result in frequent starts and stops, which consume more energy and cause mechanical wear. VSD compressors eliminate the need for on/off cycling by continuously adjusting the motor speed to meet the demand. By operating at a consistent speed within the required range, VSD compressors minimize energy losses associated with frequent cycling.

6. Enhanced System Control:

VSD compressors offer advanced control capabilities, allowing for precise monitoring and adjustment of the compressed air system. These systems can integrate with sensors and control algorithms to maintain optimal system pressure, minimize pressure fluctuations, and prevent excessive energy consumption. The ability to fine-tune the compressor’s output based on real-time demand contributes to improved overall system efficiency.

By utilizing variable speed drive technology, air compressors can achieve significant energy savings, reduce operational costs, and enhance their environmental sustainability by minimizing energy wastage and optimizing efficiency.

air compressor

What are the environmental considerations when using air compressors?

When using air compressors, there are several environmental considerations to keep in mind. Here’s an in-depth look at some of the key factors:

Energy Efficiency:

Energy efficiency is a crucial environmental consideration when using air compressors. Compressing air requires a significant amount of energy, and inefficient compressors can consume excessive power, leading to higher energy consumption and increased greenhouse gas emissions. It is important to choose energy-efficient air compressors that incorporate features such as Variable Speed Drive (VSD) technology and efficient motor design, as they can help minimize energy waste and reduce the carbon footprint.

Air Leakage:

Air leakage is a common issue in compressed air systems and can contribute to energy waste and environmental impact. Leaks in the system result in the continuous release of compressed air, requiring the compressor to work harder and consume more energy to maintain the desired pressure. Regular inspection and maintenance of the compressed air system to detect and repair leaks can help reduce air loss and improve overall energy efficiency.

Noise Pollution:

Air compressors can generate significant noise levels during operation, which can contribute to noise pollution. Prolonged exposure to high noise levels can have detrimental effects on human health and well-being and can also impact the surrounding environment and wildlife. It is important to consider noise reduction measures such as sound insulation, proper equipment placement, and using quieter compressor models to mitigate the impact of noise pollution.


While air compressors do not directly emit pollutants, the electricity or fuel used to power them can have an environmental impact. If the electricity is generated from fossil fuels, the associated emissions from power plants contribute to air pollution and greenhouse gas emissions. Choosing energy sources with lower emissions, such as renewable energy, can help reduce the environmental impact of operating air compressors.

Proper Waste Management:

Proper waste management is essential when using air compressors. This includes the appropriate disposal of compressor lubricants, filters, and other maintenance-related materials. It is important to follow local regulations and guidelines for waste disposal to prevent contamination of soil, water, or air and minimize the environmental impact.

Sustainable Practices:

Adopting sustainable practices can further reduce the environmental impact of using air compressors. This can include implementing preventive maintenance programs to optimize performance, reducing idle time, and promoting responsible use of compressed air by avoiding overpressurization and optimizing system design.

By considering these environmental factors and taking appropriate measures, it is possible to minimize the environmental impact associated with the use of air compressors. Choosing energy-efficient models, addressing air leaks, managing waste properly, and adopting sustainable practices can contribute to a more environmentally friendly operation.

air compressor

What maintenance is required for air compressors?

Maintaining air compressors is essential to ensure their optimal performance, longevity, and safe operation. Regular maintenance helps prevent breakdowns, improves efficiency, and reduces the risk of accidents. Here are some key maintenance tasks for air compressors:

1. Regular Inspection: Perform visual inspections of the air compressor to identify any signs of wear, damage, or leaks. Inspect the compressor, hoses, fittings, and connections for any abnormalities. Pay attention to oil leaks, loose bolts, and worn-out components.

2. Oil Changes: If your air compressor has an oil lubrication system, regular oil changes are crucial. Follow the manufacturer’s recommendations for the frequency of oil changes and use the recommended oil type. Dirty or degraded oil can impact compressor performance and lead to premature wear.

3. Air Filter Cleaning or Replacement: Clean or replace the air filter regularly to ensure proper air intake and prevent contaminants from entering the compressor. Clogged or dirty filters can restrict airflow and reduce efficiency.

4. Drain Moisture: Air compressors produce moisture as a byproduct of the compression process. Accumulated moisture in the tank can lead to rust and corrosion. Drain the moisture regularly from the tank to prevent damage. Some compressors have automatic drains, while others require manual draining.

5. Belt Inspection and Adjustment: If your compressor has a belt-driven system, inspect the belts for signs of wear, cracks, or tension issues. Adjust or replace the belts as necessary to maintain proper tension and power transmission.

6. Tank Inspection: Inspect the compressor tank for any signs of corrosion, dents, or structural issues. A damaged tank can be hazardous and should be repaired or replaced promptly.

7. Valve Maintenance: Check the safety valves, pressure relief valves, and other valves regularly to ensure they are functioning correctly. Test the valves periodically to verify their proper operation.

8. Motor and Electrical Components: Inspect the motor and electrical components for any signs of damage or overheating. Check electrical connections for tightness and ensure proper grounding.

9. Keep the Area Clean: Maintain a clean and debris-free area around the compressor. Remove any dirt, dust, or obstructions that can hinder the compressor’s performance or cause overheating.

10. Follow Manufacturer’s Guidelines: Always refer to the manufacturer’s manual for specific maintenance instructions and recommended service intervals for your air compressor model. They provide valuable information on maintenance tasks, lubrication requirements, and safety precautions.

Regular maintenance is vital to keep your air compressor in optimal condition and extend its lifespan. It’s also important to note that maintenance requirements may vary depending on the type, size, and usage of the compressor. By following a comprehensive maintenance routine, you can ensure the reliable operation of your air compressor and maximize its efficiency and longevity.

China Standard Industrial Stationary Low Noise 380V 3 Phase Direct Driven AC Power Oilless Rotary Screw Air Compressor   portable air compressorChina Standard Industrial Stationary Low Noise 380V 3 Phase Direct Driven AC Power Oilless Rotary Screw Air Compressor   portable air compressor
editor by CX 2024-03-15