Product Description
Crownwell Oil-Injected Rotary Screw Compressors
CWD 7-400 & CWD 7-400 PM
Power output: 7-400 kW / 10-500 hp
Delivery rate: 0.8-71.2 m3/min / 28-2514 cfm
Pressure range: 7-13 bar / 100-190 psig
CROWNWELL COMPRESSOR – HIGHEST STHangZhouRD
SIMPLICITY BUT NOT SIMPLE
For 3 generations, customers from mechanical engineering, industry and trade have relied on CHINAMFG know-how when it comes to plHangZhou, developing and manufacturing compressed air systems. They are fully aware of the fact that CHINAMFG AIR is more than just ordinary compressed air: utmost safety, outstanding efficiency, excellent quality, maximized flexibility along with dependable service are the ingredients to transform CHINAMFG AIR into air to work with – in China, in Asia and in more than 102 countries around the world.
The III generation, the basis for economical compressed air production
The Know-How
More than decades of know-how in manufacturing for the compressed air market. World wide knowledge in different compressed air applications have guided the development of customer specified stationary screw compressors.
Technical Advancement for your Benefit
The advantage of CHINAMFG lies in its simplified construction. Fewer components are utilized. This means a 60% reduction in main and wearing parts and over 70% fewer pipes and connections. In turn, this greatly reduces the risk of leakages, making the system environmentally friendly. Safe direct drive operation without V-belt transmission.
The CHINAMFG CHINAMFG works in the following way:
Ambient air is drawn through the intake filter and the multifunctional control system into the CHINAMFG block. This block consists of a pair of screw rotors. The main rotor, driven by an electric motor, takes the secondary rotor with it. The air is drawn in by the rotation of both of the interlocking rotors and is continually compressed. During rotation, coolant is injected into the rotors and forms a hydrostatic film between the main and secondary rotors. The function of the coolant is to seal the rotors, lubricate the bearings and adsorb the compression heat. Before compressed air leaves the compressor ( at 80 ºC approx.) it is separated from the coolant before being cooled in the aftercooler to approx.. 8ºC to 12ºC above the ambient temperature. The coolant then passes to the thermostatic control block and filter, before entering the cooler where it is cooled from approx.. 80ºC down to 50ºC. It is then injected back into the CHINAMFG block.
Features:
Direct drive via flexible coupling.
Fully encapsulated CHINAMFG CHINAMFG block.
Standard electric motor Protection Index IP23 and IP54.
User friendly service access.
Top quality, washable, oil resistant sound insulation.
Ready for operation, prewired and fully enclosed.
With operating mode selector switch Automatic-Off-Continuous.
Centrally mounted cooling fan provided for compressed air and lubricant coolers.
Compact and neat cabinet design.
Optional Equipment:
Sense of rotation
Multiple unit control with automatic base load selection
Full motor protection
Mains isolator switch for wall mounting
Beyond these features we offer a wide choice of compressed air accessories in reference to our compressor product range.
Energy Recovery Systems CROWNWELL-THERM
Compressed Air Filters
Compressed Air Dryers
Condensate Traps
Oil-Water Separators
Compressed Air Receivers
Crownwell OIL-INJECTED FIXED SPEED COMPRESSOR
TECHNICAL SPECIFICATIONS CWD 7-400
(7.5-400kW / 10-500hp)
| Model | Motor Power kW / hp |
Free Air Delivery m3/min |
Noise Level dB(A) |
Dimension L * W * H mm |
Weight Kg |
|||
| 7barg | 8barg | 10barg | 13barg | |||||
| CWD7 | 7.5 / 10 | 1.3 | 1.2 | 1.0 | 0.8 | 66 | 880*700*920 | 240 |
| CWD11 | 11 / 15 | 1.7 | 1.6 | 1.4 | 1.2 | 68 | 1080*750*1000 | 400 |
| CWD15 | 15 / 20 | 2.5 | 2.3 | 2.1 | 1.9 | 68 | 1080*750*1000 | 420 |
| CWD18 | 18.5 / 25 | 3.2 | 3.0 | 2.7 | 2.4 | 68 | 1280*850*1160 | 550 |
| CWD22 | 22 / 30 | 3.8 | 3.6 | 3.2 | 2.8 | 68 | 1280*850*1160 | 580 |
| CWD30 | 30 / 40 | 5.3 | 5.0 | 4.5 | 4.0 | 68 | 1280*850*1160 | 600 |
| CWD37 | 37 / 50 | 6.8 | 6.2 | 5.6 | 5.0 | 68 | 1400*1000*1290 | 800 |
| CWD45 | 45 / 60 | 8.0 | 7.3 | 7.0 | 5.9 | 72 | 1400*1000*1290 | 850 |
| CWD55 | 55 / 75 | 10.1 | 9.5 | 8.7 | 7.8 | 72 | 1800*1230*1570 | 1660 |
| CWD75 | 75 / 100 | 13.6 | 12.8 | 12.3 | 10.2 | 72 | 1800*1230*1570 | 1800 |
| CWD90 | 90 / 125 | 16.2 | 15.5 | 14.0 | 12.5 | 72 | 1800*1230*1570 | 1900 |
| CWD110 | 110 / 150 | 21.2 | 19.8 | 17.8 | 15.5 | 72 | 2400*1470*1840 | 2500 |
| CWD132 | 132 / 180 | 24.5 | 23.2 | 20.5 | 17.8 | 75 | 2400*1470*1840 | 2700 |
| CWD160 | 160 / 215 | 28.8 | 27.8 | 25.0 | 22.4 | 75 | 2400*1470*1840 | 3000 |
| CWD185 | 185 / 250 | 32.5 | 31.2 | 28.0 | 25.8 | 75 | 3150*1980*2150 | 3500 |
| CWD200 | 200 / 270 | 36.0 | 34.3 | 30.5 | 28.0 | 82 | 3150*1980*2150 | 4000 |
| CWD250 | 250 / 350 | 43.0 | 41.5 | 38.2 | 34.9 | 82 | 3150*1980*2150 | 4500 |
| CWD315 | 315 / 400 | 51.0 | 50.2 | 44.5 | 39.5 | 82 | 3150*1980*2150 | 6000 |
| CWD355 | 355 / 450 | 64.0 | 61.0 | 56.5 | 49.0 | 84 | 3150*1980*2150 | 6500 |
| CWD400 | 400 / 500 | 71.2 | 68.1 | 62.8 | 52.2 | 84 | 3150*1980*2150 | 7200 |
- Unit performance measured according to ISO 1217, Annex C, Edition 4 (2009)
Reference conditions:
-Relative humidity 0%
-Absolute inlet pressure: 1 bar (a) (14.5 psi)
-Intake air temperature: 20°C, 68°F
- Noise level measured according to ISO 2151:2004, operation at max. operating pressure and max. speed; tolerance: ±3 dB(A)
Crownwell OIL-INJECTED PERMANENT MAGNET COMPRESSOR
TECHNICAL SPECIFICATIONS CWD 7-400 PM
(7.5-400kW / 10-500hp)
| Model | Motor Power kW / hp |
Free Air Delivery m3/min |
Noise Level dB(A) |
Dimension L * W * H mm |
Weight Kg |
|||
| 7barg | 8barg | 10barg | 13barg | |||||
| CWD7 PM | 7.5 / 10 | 1.3 | 1.2 | 1.0 | 0.8 | 66 | 760*700*920 | 200 |
| CWD11 PM | 11 / 15 | 1.7 | 1.6 | 1.4 | 1.2 | 68 | 980*750*1000 | 350 |
| CWD15 PM | 15 / 20 | 2.5 | 2.3 | 2.1 | 1.9 | 68 | 980*750*1000 | 360 |
| CWD18 PM | 18.5 / 25 | 3.2 | 3.0 | 2.7 | 2.4 | 68 | 1120*850*1160 | 500 |
| CWD22 PM | 22 / 30 | 3.8 | 3.6 | 3.2 | 2.8 | 68 | 1120*850*1160 | 520 |
| CWD30 PM | 30 / 40 | 5.3 | 5.0 | 4.5 | 4.0 | 68 | 1120*850*1160 | 550 |
| CWD37 PM | 37 / 50 | 6.8 | 6.2 | 5.6 | 5.0 | 68 | 1280*1000*1290 | 750 |
| CWD45 PM | 45 / 60 | 8.0 | 7.3 | 7.0 | 5.9 | 72 | 1280*1000*1290 | 780 |
| CWD55 PM | 55 / 75 | 10.1 | 9.5 | 8.7 | 7.8 | 72 | 1800*1230*1570 | 1600 |
| CWD75 PM | 75 / 100 | 13.6 | 12.8 | 12.3 | 10.2 | 72 | 1800*1230*1570 | 1800 |
| CWD90 PM | 90 / 125 | 16.2 | 15.5 | 14.0 | 12.5 | 72 | 1800*1230*1570 | 1900 |
| CWD110 PM | 110 / 150 | 21.2 | 19.8 | 17.8 | 15.5 | 72 | 2400*1470*1840 | 2500 |
| CWD132 PM | 132 / 180 | 24.5 | 23.2 | 20.5 | 17.8 | 75 | 2400*1470*1840 | 2700 |
| CWD160 PM | 160 / 215 | 28.8 | 27.8 | 25.0 | 22.4 | 75 | 2400*1470*1840 | 3000 |
| CWD185 PM | 185 / 250 | 32.5 | 31.2 | 28.0 | 25.8 | 75 | 3150*1980*2150 | 3500 |
| CWD200 PM | 200 / 270 | 36.0 | 34.3 | 30.5 | 28.0 | 82 | 3150*1980*2150 | 4000 |
| CWD250 PM | 250 / 350 | 43.0 | 41.5 | 38.2 | 34.9 | 82 | 3150*1980*2150 | 4500 |
| CWD315 PM | 315 / 400 | 51.0 | 50.2 | 44.5 | 39.5 | 82 | 3150*1980*2150 | 6000 |
| CWD355 PM | 355 / 450 | 64.0 | 61.0 | 56.5 | 49.0 | 84 | 3150*1980*2150 | 6500 |
| CWD400 PM | 400 / 500 | 71.2 | 68.1 | 62.8 | 52.2 | 84 | 3150*1980*2150 | 7200 |
- Unit performance measured according to ISO 1217, Annex C, Edition 4 (2009)
Reference conditions:
-Relative humidity 0%
-Absolute inlet pressure: 1 bar (a) (14.5 psi)
-Intake air temperature: 20°C, 68°F
- Noise level measured according to ISO 2151:2004, operation at max. operating pressure and max. speed; tolerance: ±3 dB(A)
- PM-Permanent Magnet
Crownwell TWO-STAGE OIL-INJECTED COMPRESSOR
TECHNICAL SPECIFICATIONS CWD 7-400 PM
(7.5-400kW / 10-500hp)
| Model | Motor Power kW / hp |
Free Air Delivery m3/min |
Noise Level dB(A) |
Dimension L * W * H mm |
Weight Kg |
|||
| 7barg | 8barg | 10barg | 13barg | |||||
| CWD15-2S | 15 / 20 | 3.0 | 2.9 | 2.4 | 2.2 | 68 | 1480*850*1180 | 780 |
| CWD18-2S | 18.5 / 25 | 3.6 | 3.5 | 2.9 | 2.5 | 68 | 1480*850*1180 | 800 |
| CWD22-2S | 22 / 30 | 4.2 | 4.1 | 3.5 | 3.2 | 68 | 1480*850*1180 | 820 |
| CWD30-2S | 30 / 40 | 6.5 | 6.4 | 4.9 | 4.2 | 68 | 1720*1110*1480 | 1080 |
| CWD37-2S | 37 / 50 | 7.2 | 7.1 | 6.3 | 5.4 | 68 | 1720*1110*1480 | 1100 |
| CWD45-2S | 45 / 60 | 9.8 | 9.7 | 7.8 | 6.5 | 72 | 1720*1110*1480 | 1120 |
| CWD55-2S | 55 / 75 | 12.8 | 12.5 | 9.6 | 8.6 | 72 | 2100*1350*1720 | 2080 |
| CWD75-2S | 75 / 100 | 17.5 | 16.5 | 12.5 | 11.2 | 72 | 2100*1350*1720 | 2100 |
| CWD90-2S | 90 / 125 | 20.8 | 19.8 | 16.9 | 14.3 | 72 | 2460*1700*1900 | 3280 |
| CWD110-2S | 110 / 150 | 24.5 | 23.5 | 19.7 | 17.6 | 72 | 2460*1700*1900 | 3480 |
| CWD132-2S | 132 / 180 | 30.0 | 28.0 | 23.5 | 19.8 | 75 | 2900*1800*2571 | 3980 |
| CWD160-2S | 160 / 215 | 34.5 | 33.6 | 30.0 | 23.8 | 75 | 2900*1800*2571 | 4280 |
| CWD185-2S | 185 / 250 | 41.0 | 38.4 | 32.5 | 28.6 | 75 | 3800*1980*2150 | 5450 |
| CWD200-2S | 200 / 270 | 44.6 | 43.0 | 38.5 | 32.8 | 82 | 3800*1980*2150 | 5600 |
| CWD220-2S | 220 / 300 | 48.6 | 47.0 | 41.0 | 38.0 | 82 | 3800*1980*2150 | 6500 |
| CWD250-2S | 250 / 350 | 55.0 | 54.0 | 46.0 | 40.0 | 82 | 3800*1980*2150 | 6600 |
- Unit performance measured according to ISO 1217, Annex C, Edition 4 (2009)
Reference conditions:
-Relative humidity 0%
-Absolute inlet pressure: 1 bar (a) (14.5 psi)
-Intake air temperature: 20°C, 68°F
- Noise level measured according to ISO 2151:2004, operation at max. operating pressure and max. speed; tolerance: ±3 dB(A)
- 2S-Two Stage
|
Shipping Cost:
Estimated freight per unit. |
To be negotiated |
|---|
| Lubrication Style: | Lubricated |
|---|---|
| Cooling System: | AC Cooling and Air Cooling |
| Power Source: | AC Power |
| Customization: |
Available
|
|
|---|
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Can air compressors be used for gas compression and storage?
Yes, air compressors can be used for gas compression and storage. While air compressors are commonly used to compress and store air, they can also be utilized for compressing and storing other gases, depending on the specific application requirements. Here’s how air compressors can be used for gas compression and storage:
Gas Compression:
Air compressors can compress various gases by utilizing the same principles applied to compressing air. The compressor takes in the gas at a certain pressure, and through the compression process, it increases the pressure and reduces the volume of the gas. This compressed gas can then be used for different purposes, such as in industrial processes, gas pipelines, or storage systems.
Gas Storage:
Air compressors can also be used for gas storage by compressing the gas into storage vessels or tanks. The compressed gas is stored at high pressure within these vessels until it is needed for use. Gas storage is commonly employed in industries where a continuous and reliable supply of gas is required, such as in natural gas storage facilities or for storing compressed natural gas (CNG) used as a fuel for vehicles.
Gas Types:
While air compressors are primarily designed for compressing air, they can be adapted to handle various gases, including but not limited to:
- Nitrogen
- Oxygen
- Hydrogen
- Carbon dioxide
- Natural gas
- Refrigerant gases
It’s important to note that when using air compressors for gas compression and storage, certain considerations must be taken into account. These include compatibility of the compressor materials with the specific gas being compressed, ensuring proper sealing to prevent gas leaks, and adhering to safety regulations and guidelines for handling and storing compressed gases.
By leveraging the capabilities of air compressors, it is possible to compress and store gases efficiently, providing a reliable supply for various industrial, commercial, and residential applications.
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Can air compressors be integrated into automated systems?
Yes, air compressors can be integrated into automated systems, providing a reliable and versatile source of compressed air for various applications. Here’s a detailed explanation of how air compressors can be integrated into automated systems:
Pneumatic Automation:
Air compressors are commonly used in pneumatic automation systems, where compressed air is utilized to power and control automated machinery and equipment. Pneumatic systems rely on the controlled release of compressed air to generate linear or rotational motion, actuating valves, cylinders, and other pneumatic components. By integrating an air compressor into the system, a continuous supply of compressed air is available to power the automation process.
Control and Regulation:
In automated systems, air compressors are often connected to a control and regulation system to manage the compressed air supply. This system includes components such as pressure regulators, valves, and sensors to monitor and adjust the air pressure, flow, and distribution. The control system ensures that the air compressor operates within the desired parameters and provides the appropriate amount of compressed air to different parts of the automated system as needed.
Sequential Operations:
Integration of air compressors into automated systems enables sequential operations to be carried out efficiently. Compressed air can be used to control the timing and sequencing of different pneumatic components, ensuring that the automated system performs tasks in the desired order and with precise timing. This is particularly useful in manufacturing and assembly processes where precise coordination of pneumatic actuators is required.
Energy Efficiency:
Air compressors can contribute to energy-efficient automation systems. By incorporating energy-saving features such as Variable Speed Drive (VSD) technology, air compressors can adjust their power output according to the demand, reducing energy consumption during periods of low activity. Additionally, efficient control and regulation systems help optimize the use of compressed air, minimizing waste and improving overall energy efficiency.
Monitoring and Diagnostics:
Integration of air compressors into automated systems often includes monitoring and diagnostic capabilities. Sensors and monitoring devices can be installed to collect data on parameters such as air pressure, temperature, and system performance. This information can be used for real-time monitoring, preventive maintenance, and troubleshooting, ensuring the reliable operation of the automated system.
When integrating air compressors into automated systems, it is crucial to consider factors such as the specific requirements of the automation process, the desired air pressure and volume, and the compatibility of the compressor with the control and regulation system. Consulting with experts in automation and compressed air systems can help in designing an efficient and reliable integration.
In summary, air compressors can be seamlessly integrated into automated systems, providing the necessary compressed air to power and control pneumatic components, enabling sequential operations, and contributing to energy-efficient automation processes.
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What is the purpose of an air compressor?
An air compressor serves the purpose of converting power, typically from an electric motor or an engine, into potential energy stored in compressed air. It achieves this by compressing and pressurizing air, which can then be used for various applications. Here’s a detailed explanation of the purpose of an air compressor:
1. Powering Pneumatic Tools: One of the primary uses of an air compressor is to power pneumatic tools. Compressed air can be used to operate a wide range of tools, such as impact wrenches, nail guns, paint sprayers, sanders, and drills. The compressed air provides the necessary force and energy to drive these tools, making them efficient and versatile.
2. Supplying Clean and Dry Air: Air compressors are often used to supply clean and dry compressed air for various industrial processes. Many manufacturing and production operations require a reliable source of compressed air that is free from moisture, oil, and other contaminants. Air compressors equipped with appropriate filters and dryers can deliver high-quality compressed air for applications such as instrumentation, control systems, and pneumatic machinery.
3. Inflating Tires and Sports Equipment: Air compressors are commonly used for inflating tires, whether it’s for vehicles, bicycles, or sports equipment. They provide a convenient and efficient method for quickly filling tires with the required pressure. Air compressors are also used for inflating sports balls, inflatable toys, and other similar items.
4. Operating HVAC Systems: Air compressors play a crucial role in the operation of heating, ventilation, and air conditioning (HVAC) systems. They provide compressed air for controlling and actuating dampers, valves, and actuators in HVAC systems, enabling precise regulation of air flow and temperature.
5. Assisting in Industrial Processes: Compressed air is utilized in various industrial processes. It can be used for air blow-off applications, cleaning and drying parts, powering air-operated machinery, and controlling pneumatic systems. Air compressors provide a reliable and efficient source of compressed air that can be tailored to meet the specific requirements of different industrial applications.
6. Supporting Scuba Diving and Breathing Systems: In scuba diving and other breathing systems, air compressors are responsible for filling diving tanks and supplying breathable air to divers. These compressors are designed to meet strict safety standards and deliver compressed air that is free from contaminants.
Overall, the purpose of an air compressor is to provide a versatile source of compressed air for powering tools, supplying clean air for various applications, inflating tires and sports equipment, supporting industrial processes, and facilitating breathing systems in specific contexts.


editor by CX 2023-10-05