Product Description
| Model : | Oil Free Series |
| Type: | Oil Free Screw Air Compressor |
| Working Pressure: | 8~12.5bar |
| Installed Motor Power: | 7.5~250 Kw |
| Capacity: | 0.81~39.30 m3/min |
| Driven Method: | Direct Driven |
| Power | 380V / 3PH / 50HZ / 60HZ 220V / 3PH / 50HZ / 60HZ 440V / 3PH / 50HZ / 60HZ 415V / 3PH / 50HZ / 60HZ Can be customized |
| Transport Package: | Standard Wooden Packing |
| Motor protection grade | IP54 |
| Insulation class | F |
| Outlet Air Humidity | ambient temperature+10ºC |
Product Features
In pharmaceutical, electronic, chemical, microbial fermentation, blow moulding, pressure detection and other industrial production, there are many medium-pressure compressed air to be used to 1.6-4.0 MPa in power plants, naval ships, national defense facilities. At present, piston air compressors are mostly used at home and abroad, while piston air compressors are characterized by large vibration, high noise, large leakage and short service life, so their efficiency is very low and the same work is done. The medium pressure oil-free screw machine has compact structure, high working efficiency, low noise, low vibration, easy maintenance, low operating cost and good air quality. At the same time, the series of machines are controlled by micro-computer system. The whole machine has multiple protective performance of pressure, temperature and overload energy.
1.Constant pressure control: high-precision constant pressure control with a pressure fluctuation range within0.01MPa.
2. Variable frequency soft start: remove CHINAMFG current during starting, avoid the power grid impact, prevent the current impact through gradual speed regulation and improve flexibility;
3.No idling: prevent idling of the compressor during running and reduce invalid energy consumption;
3.High performance vector control: low-frequency starting provides a large torque and a low running current, ensuring to get a reasonable torque to drive the air compressor to run stably with the minimum temperature rise of the motor within a wide speed range;
| Model | Working pressure | Capacity | Motor power | Noise dB(A) |
Inlet and outlet pipe dia. of cooling water | Cooling water volume |
Lubricating water |
Dimension(mm) | Net weight | Air outlet | ||
| bar | m3/min | kw/hp | Inlet water temp. 32ºC(T/H) |
L | L*W*H | KGS | ||||||
| SGM08 | 8 | 1.17 | 7.5/10 | 58 | 3/4″ | 2 | 10 | 800*800*1100(A) 800*800*1100(W) |
470 | 3/4″ | ||
| 10 | 1.05 | |||||||||||
| 12.5 | 0.81 | |||||||||||
| SGM11 | 8 | 1.65 | 11/15 | 60 | 1″ | 2.5 | 26 | 1200*760*1300(A) 1200*760*1300(W) |
580 | 3/4″ | ||
| 10 | 1.42 | |||||||||||
| 12.5 | 1.10 | |||||||||||
| SGM15 | 8 | 2.43 | 15/20 | 63 | 1″ | 3.5 | 26 | 1200*760*1300(A) 1200*760*1300(W) |
620 | 3/4″ | ||
| 10 | 2.17 | |||||||||||
| 12.5 | 1.80 | |||||||||||
| SGM18 | 8 | 3.13 | 18.5/25 | 65 | 1″ | 4 | 30 | 1400*900*1450(A) 1400*900*1450(W) |
680 | 1″ | ||
| 10 | 2.82 | |||||||||||
| 12.5 | 2.05 | |||||||||||
| SGM22 | 8 | 3.52 | 22/30 | 65 | 1″ | 5 | 30 | 1400*900*1450(A) 1400*900*1450(W) |
730 | 1″ | ||
| 10 | 3.21 | |||||||||||
| 12.5 | 2.78 | |||||||||||
| SGM30 | 8 | 5.12 | 30/40 | 67 | 1 1/2″ | 7 | 40 | 1550*1150*1500(A) 1500*1150*1300(W) |
1100 | 1 1/4″ | ||
| 10 | 4.43 | |||||||||||
| 12.5 | 3.63 | |||||||||||
| SGM37 | 8 | 6.30 | 37/50 | 67 | 1 1/2″ | 9 | 40 | 1550*1150*1500(A) 1500*1150*1300(W) |
1150 | 1 1/4″ | ||
| 10 | 5.33 | |||||||||||
| 12.5 | 4.77 | |||||||||||
| SGM45 | 8 | 7.40 | 45/60 | 68 | 1 1/2″ | 10 | 90 | 1800*1300*1750(A) 1800*1300*1680(W) |
1390 | 2″ | ||
| 10 | 6.30 | |||||||||||
| 12.5 | 5.56 | |||||||||||
| SGM55 | 8 | 9.60 | 55/75 | 70 | 1 1/2″ | 12 | 120 | 1980*1400*1850(A) 1800*1300*1680(W) |
1470 | 2″ | ||
| 10 | 8.55 | |||||||||||
| 12.5 | 7.67 | |||||||||||
| SGM75 | 8 | 13.00 | 75/100 | 73 | 1 1/2″ | 18 | 120 | 2100*1600*1900(A) 1800*1300*1750(W) |
2250 1630 |
2″ | ||
| 10 | 11.50 | |||||||||||
| 12.5 | 9.70 | |||||||||||
| SGM90 | 8 | 14.80 | 90/120 | 73 | 1 1/2″ | 20 | 180 | 2400*1600*2000(A) 2200*1550*1800(W) |
2650 2350 |
2 1/2″ | ||
| 10 | 13.90 | |||||||||||
| 12.5 | 12.60 | |||||||||||
| SGM110 | 8 | 19.85 | 110/150 | 78 | 2″ | 24 | 180 | 2700*1600*2100(A) 2200*1550*1800(W) |
2950 2460 |
2 1/2″ | ||
| 10 | 16.66 | |||||||||||
| 12.5 | 15.56 | |||||||||||
| SGM132 | 8 | 23.10 | 132/175 | 78 | 2″ | 30 | 240 | 3000*1700*2250(A) 2200*1550*1800(W) |
3500 2500 |
2 1/2″ | ||
| 10 | 19.97 | |||||||||||
| 12.5 | 16.90 | |||||||||||
| SGM160 | 8 | 28.11 | 160/200 | 80 | 3″ | 35 | 240 | 3000*1800*2100(W) | 3700 | 3″ | ||
| 10 | 25.45 | |||||||||||
| 12.5 | 22.52 | |||||||||||
| SGM185 | 8 | 33.97 | 185/250 | 80 | 3″ | 38 | 300 | 3000*1800*2100(W) | 3750 | 3″ | ||
| 10 | 29.00 | |||||||||||
| 12.5 | 25.21 | |||||||||||
| SGM200 | 8 | 36.75 | 200/275 | 80 | 4″ | 42 | 300 | 3100*1850*2100(W) | 3900 | 4″ | ||
| 10 | 32.78 | |||||||||||
| 12.5 | 29.24 | |||||||||||
| SGM220 | 8 | 39.67 | 220/300 | 80 | 4″ | 47 | 360 | 3100*1850*2100(W) | 4200 | 4″ | ||
| 10 | 36.75 | |||||||||||
| 12.5 | 29.63 | |||||||||||
| SGM250 | 8 | 43.50 | 250/350 | 80 | 4″ | 53 | 360 | 3100*1850*2100(W) | 4600 | 4″ | ||
| 10 | 39.30 | |||||||||||
| 12.5 | 34.00 | |||||||||||
| Motor Protection Class:IP54/IP55 or as per your requests. | ||||||||||||
| Voltage: 380V/50Hz/3ph, 380V/60Hz/3ph, 220V/50Hz/3ph, 220V/60Hz/3ph, 440V/50Hz/3ph, 440V/60Hz/3ph, or as per your requests. | ||||||||||||
| In the external dimensions: “A” means air cooling, and “W” means water cooling. | ||||||||||||
Q1: What is the rotor speed for the air end?
A1: 2980rmp.
Q2: What’s your lead time?
A2: usually, 5-7 days. (OEM orders: 15days)
Q3: Can you offer water cooled air compressor?
A3: Yes, we can (normally, air cooled type).
Q4: What’s the payment term?
A4: T/T, L/C, Western Union, etc. Also we could accept USD, RMB, and other currency.
Q5: Do you accept customized voltage?
A5: Yes. 380V/50Hz/3ph, 380V/60Hz/3ph, 220V/50Hz/3ph, 220V/60Hz/3ph, 440V/50Hz/3ph, 440V/60Hz/3ph, or as per your requests.
Q6: What is your warranty for air compressor?
A6: One year for the whole air compressor(not including the consumption spare parts) and technical supports can be provided according to your needs.
Q7: Can you accept OEM orders?
A7: Yes, OEM orders are warmly welcome.
Q8: How about your customer service and after-sales service?
A8: 24hrs on-line support, 48hrs problem solved promise.
Q9: Do you have spare parts in stock?
A9: Yes, we do.
Q10: What kind of initial lubrication oil you used in air compressor?
A10: TOTAL 46# mineral oil.
If you are interested in any of our products,please feel free to contact us.
We are looking CHINAMFG to cooperating,growing and developing with your sincerely.
| After-sales Service: | Online Support, Dispatched Engineers |
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| Warranty: | 1 Year |
| Lubrication Style: | Oil-free |
| Customization: |
Available
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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What are the energy-saving technologies available for air compressors?
There are several energy-saving technologies available for air compressors that help improve their efficiency and reduce energy consumption. These technologies aim to optimize the operation of air compressors and minimize energy losses. Here are some common energy-saving technologies used:
1. Variable Speed Drive (VSD) Compressors:
VSD compressors are designed to adjust the motor speed according to the compressed air demand. By varying the motor speed, these compressors can match the output to the actual air requirement, resulting in energy savings. VSD compressors are particularly effective in applications with varying air demands, as they can operate at lower speeds during periods of lower demand, reducing energy consumption.
2. Energy-Efficient Motors:
The use of energy-efficient motors in air compressors can contribute to energy savings. High-efficiency motors, such as those with premium efficiency ratings, are designed to minimize energy losses and operate more efficiently than standard motors. By using energy-efficient motors, air compressors can reduce energy consumption and achieve higher overall system efficiency.
3. Heat Recovery Systems:
Air compressors generate a significant amount of heat during operation. Heat recovery systems capture and utilize this wasted heat for other purposes, such as space heating, water heating, or preheating process air or water. By recovering and utilizing the heat, air compressors can provide additional energy savings and improve overall system efficiency.
4. Air Receiver Tanks:
Air receiver tanks are used to store compressed air and provide a buffer during periods of fluctuating demand. By using appropriately sized air receiver tanks, the compressed air system can operate more efficiently. The tanks help reduce the number of starts and stops of the air compressor, allowing it to run at full load for longer periods, which is more energy-efficient than frequent cycling.
5. System Control and Automation:
Implementing advanced control and automation systems can optimize the operation of air compressors. These systems monitor and adjust the compressed air system based on demand, ensuring that only the required amount of air is produced. By maintaining optimal system pressure, minimizing leaks, and reducing unnecessary air production, control and automation systems help achieve energy savings.
6. Leak Detection and Repair:
Air leaks in compressed air systems can lead to significant energy losses. Regular leak detection and repair programs help identify and fix air leaks promptly. By minimizing air leakage, the demand on the air compressor is reduced, resulting in energy savings. Utilizing ultrasonic leak detection devices can help locate and repair leaks more efficiently.
7. System Optimization and Maintenance:
Proper system optimization and routine maintenance are essential for energy savings in air compressors. This includes regular cleaning and replacement of air filters, optimizing air pressure settings, ensuring proper lubrication, and conducting preventive maintenance to keep the system running at peak efficiency.
By implementing these energy-saving technologies and practices, air compressor systems can achieve significant energy efficiency improvements, reduce operational costs, and minimize environmental impact.
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What is the impact of altitude on air compressor performance?
The altitude at which an air compressor operates can have a significant impact on its performance. Here are the key factors affected by altitude:
1. Decreased Air Density:
As altitude increases, the air density decreases. This means there is less oxygen available per unit volume of air. Since air compressors rely on the intake of atmospheric air for compression, the reduced air density at higher altitudes can lead to a decrease in compressor performance.
2. Reduced Airflow:
The decrease in air density at higher altitudes results in reduced airflow. This can affect the cooling capacity of the compressor, as lower airflow hampers the dissipation of heat generated during compression. Inadequate cooling can lead to increased operating temperatures and potential overheating of the compressor.
3. Decreased Power Output:
Lower air density at higher altitudes also affects the power output of the compressor. The reduced oxygen content in the air can result in incomplete combustion, leading to decreased power generation. As a result, the compressor may deliver lower airflow and pressure than its rated capacity.
4. Extended Compression Cycle:
At higher altitudes, the air compressor needs to work harder to compress the thinner air. This can lead to an extended compression cycle, as the compressor may require more time to reach the desired pressure levels. The longer compression cycle can affect the overall efficiency and productivity of the compressor.
5. Pressure Adjustments:
When operating an air compressor at higher altitudes, it may be necessary to adjust the pressure settings. As the ambient air pressure decreases with altitude, the compressor’s pressure gauge may need to be recalibrated to maintain the desired pressure output. Failing to make these adjustments can result in underinflated tires, improper tool performance, or other issues.
6. Compressor Design:
Some air compressors are specifically designed to handle higher altitudes. These models may incorporate features such as larger intake filters, more robust cooling systems, and adjusted compression ratios to compensate for the reduced air density and maintain optimal performance.
7. Maintenance Considerations:
Operating an air compressor at higher altitudes may require additional maintenance and monitoring. It is important to regularly check and clean the intake filters to ensure proper airflow. Monitoring the compressor’s operating temperature and making any necessary adjustments or repairs is also crucial to prevent overheating and maintain efficient performance.
When using an air compressor at higher altitudes, it is advisable to consult the manufacturer’s guidelines and recommendations specific to altitude operations. Following these guidelines and considering the impact of altitude on air compressor performance will help ensure safe and efficient operation.
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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.


editor by CX 2023-11-10