China supplier 7.5kw 15kw 22kw Screw Air Compressor High Pressure Air Compressor AC Air Compressor Direct Driven Air Compressor Oilless Oil Free Air Compressor lowes air compressor

Product Description

7.5kw 15kw 22kw Screw Air Compressor High Pressure Air Compressor IP55 Direct Driven Factory Direct Air Compressor Oilless Oil free  Air Compressor 

Promises Every Machine Will Run Well More Than 15 Years 

Product Description


Brief Introduction:

Air end: Germany Technology. 30 years designed lifetime.
Motor: Top quality ,IP54 or IP55
Inverter: Danish brand inverter can save 30% energy.
Warranty: 5 years for the air end, and 2 years for the whole compressor. 
Delivery time: 7-15 days. 
After-sales service:we have our professional after-sales technician to instruct the installation of the whole screw air compressor.    
Certificate: CE/ISO9001/ASME
We offer free pipe and valves for installation and installation diagram


Basic introduction of screw air compressor


Model :  7.5kw 15kw 22kw Screw Air Compressor 380V/3pH/50Hz IP55 Direct Driven Factory Direct
Type:  Energy Saving Air Compressor
Voltage:  380V/50HZ/3P, 220V/60HZ/3P, 400V/50HZ/3P, 415V/50HZ/3P or Customer′s Requirements
Working Pressure:  7~12.5 bar
Installed Motor Power:  11kw
Capacity: 1.5-0.8m3/min
Color:  Blue or gery
Driven Method: Direct drive
Air End: Original Ally-win Air End from Germany
Trademark:  Hengchaowin
Transport Package:  Standard Wooden Packing
Available Certificate:  CE, ISO, UL, ASME, GHOST
Origin:  ZheJiang , China
application:  Casting , Metal , Plastic , Rubber

Detailed Photos

1.permanent magnet motor.
Exceed IE3 standards
IP54 or IP55 protecting grad
Variable speed drive

2.Germany technology air end 
R&D in Germany GU or CHINAMFG brand air end
designed for 10 years +of reliable operation

3.Inlet valve
same desige as CHINAMFG Rand 
No blow-off losses/large suction are
Full aluminum design,maintenance-free

4.oil gas tank & built in separation system. 
Oversized air end oil tank with sight glass
The high efficiency oil seperator ensures that the oil carry over in less than 3ppm.
System pressure loss,less than 0.02mpa.

5.Polt touch controller
HD color touch LCD screen
Operation record/chart display
Weekly timer/service history and plHangZhou
Real-time operation/maintenance/alarm information

6.Innovative vectorial inverter
CE,UL,CUL,ROSH certification
Independent cooling air duct design
Robust enclosure for trouble-free operation in the harshest conditions.


Product Parameters


HW-7T HW-11T HW-15T HW-22T HWV-30A HWV-37A
air flow
flujo de aire
Lliter/min 1 0.9 0.8 1.5 1.3 1.1 0.8 2.4 2.1 1.5 1 3.5 3.1 2.7 1.7 4.3 3.6 2.4 2.9 5.8 5.2 2.8 3.2
35 31 28 52 46 39 28 74 74 52 35 124 109 95 35 151 127 74 102 205 183 98 112
working pressure
presión laboral
bar(kg) 8 10 12.5 8 10 12.5 15 8 10 12.5 15 8 10 12.5 15 10 12.5 15 20 10 12.5 15 20
psi 116 145 174 116 145 174 217 116 145 174 217 116 145 174 217 145 174 217 290 145 174 217 290
KW / HP 7.5kw/
noise db(A) 62±2 66±2 66±2 68±2 68±2 72±2
Caliber inch RP 1/2 RP 1/2 RP 1/2 RP 1/2 RP 1 RP1 1/2
Voltage/Frequency AC 380v/415v/220v/480v   or   50hz/60hz  accpet Customized voltage
Starting mode
Modo de inicio
variable frequency start  
inicio de frecuencia variable
air dryer
m³/min 1.5 1.5 2.5 3.8 / /
line filter
filtro de línea
m³/min 1.5 1.5 2.5 3.8 / /
air tank
tanque de aire
liter 300 400 400 600 / /
Shape dimension
L 1700 1180 1180 1600 1300 1450
W 800 800 800 110 910 910
H 1689 1210 1210 1290 1290 1290
Weight KG 500 600 650 700 520 720

Hot products
1. direct drive rotary screw air compressor
2. energy saving VSD air compressor
3. air compressor with air tank and air dryer
4. 2 stage VSD screw air compressor


Company Profile

Why Choose Us

HangZhou CHINAMFG Technology Co., Ltd., founded in 1985, in ZheJiang ,China, It is a professional air compressor manufacturer with 30 years of experience in R&D, manufacturing, marketing and service.

After the technical system reform in 2000, the company introduced German advanced CHINAMFG technology, adhering to the German advanced industrial design concept, rigorous manufacturing technology and comprehensive management. We strictly implement ISO9001 international quality system certification and EU CE standard production machines. The performance and quality of our products have been widely recognized and praised by the market, occupying 30% of China’s market share.
Starting to enter overseas markets in 2571, it currently has agents and after-sales teams in North America, Western Europe, South Africa, East Africa and other regions.

Brief introduction of factory:
1. We have been engaged in R D department, production and sales of air compressors  for 30 years;  
2. Our air compressor products through  CE,SGS,ISO  certification, with more than 20 invention patents;  
3. Our products are exported to  132  countries and regions around the world;  
4. Our air compressor provides a 5-year warranty.  
If you have specific parameters and requirements for our Rotary Screw Type Air Compressor, customization is available

Customer feedback

Providing high-quality machines is our standard, and satisfying every customer is our pursuit. Over the years, we have won unanimous praise from overseas users for our integrity and high-quality product quality.


Packaging & Shipping

The air compressor is guaranteed for 1 year and 5 years for the screw(air end) . Warranty time is calculated from machine leave the factory.



Q1: How long could your air compressor be used?
O: Generally, more than 10 years

Q2: What’s payment term?
O: T/T, L/C, Paypal and etc. Also we could accept USD, RMB, Euro and other currency (Pls contact our sales for more information

Q3: How about your customer service?
O: 24 hours on-line service available

Q4: How about your after-sales service?
O: 1. Provide customers with installation and commissioning online instructions.
2. Well-trained engineers available to overseas service
3. World wide agents and after service available /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

After-sales Service: Support Online and Local Service
Warranty: 1 Year
Lubrication Style: Lubricated


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Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

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

Can air compressors be used for inflating tires and sporting equipment?

Yes, air compressors can be used for inflating tires and sporting equipment, providing a convenient and efficient method for achieving the desired air pressure. Here’s how air compressors are used for these purposes:

1. Tire Inflation:

Air compressors are commonly used for inflating vehicle tires, including car tires, motorcycle tires, bicycle tires, and even larger truck or trailer tires. Air compressors provide a continuous source of pressurized air, allowing for quick and accurate inflation. They are often used in automotive repair shops, gas stations, and by individuals who regularly need to inflate tires.

2. Sporting Equipment Inflation:

Air compressors are also useful for inflating various types of sporting equipment. This includes inflatable balls such as soccer balls, basketballs, footballs, and volleyballs. Additionally, air compressors can be used to inflate inflatable water toys, air mattresses, inflatable kayaks, and other recreational items that require air for proper inflation.

3. Air Tools for Inflation:

Air compressors can power air tools specifically designed for inflation purposes. These tools, known as inflators or air blow guns, provide controlled airflow for inflating tires and sporting equipment. They often have built-in pressure gauges and nozzles designed to fit different types of valves, making them versatile and suitable for various inflation tasks.

4. Adjustable Pressure:

One advantage of using air compressors for inflation is the ability to adjust the pressure. Most air compressors allow users to set the desired pressure level using a pressure regulator or control knob. This feature ensures that tires and sporting equipment are inflated to the recommended pressure, promoting optimal performance and safety.

5. Efficiency and Speed:

Air compressors provide a faster and more efficient inflation method compared to manual pumps. The continuous supply of compressed air allows for quick inflation, reducing the time and effort required to inflate tires and sporting equipment manually.

6. Portable Air Compressors:

For inflating tires and sporting equipment on the go, portable air compressors are available. These compact and lightweight compressors can be easily carried in vehicles or taken to sports events and outdoor activities, ensuring convenient access to a reliable air supply.

It is important to note that when using air compressors for inflating tires, it is recommended to follow manufacturer guidelines and proper inflation techniques to ensure safety and avoid overinflation.

air compressor

How does an air compressor work?

An air compressor works by using mechanical energy to compress and pressurize air, which is then stored and used for various applications. Here’s a detailed explanation of how an air compressor operates:

1. Air Intake: The air compressor draws in ambient air through an intake valve or filter. The air may pass through a series of filters to remove contaminants such as dust, dirt, and moisture, ensuring the compressed air is clean and suitable for its intended use.

2. Compression: The intake air enters a compression chamber, typically consisting of one or more pistons or a rotating screw mechanism. As the piston moves or the screw rotates, the volume of the compression chamber decreases, causing the air to be compressed. This compression process increases the pressure and reduces the volume of the air.

3. Pressure Build-Up: The compressed air is discharged into a storage tank or receiver where it is held at a high pressure. The tank allows the compressed air to be stored for later use and helps to maintain a consistent supply of compressed air, even during periods of high demand.

4. Pressure Regulation: Air compressors often have a pressure regulator that controls the output pressure of the compressed air. This allows the user to adjust the pressure according to the requirements of the specific application. The pressure regulator ensures that the compressed air is delivered at the desired pressure level.

5. Release and Use: When compressed air is needed, it is released from the storage tank or receiver through an outlet valve or connection. The compressed air can then be directed to the desired application, such as pneumatic tools, air-operated machinery, or other pneumatic systems.

6. Continued Operation: The air compressor continues to operate as long as there is a demand for compressed air. When the pressure in the storage tank drops below a certain level, the compressor automatically starts again to replenish the compressed air supply.

Additionally, air compressors may include various components such as pressure gauges, safety valves, lubrication systems, and cooling mechanisms to ensure efficient and reliable operation.

In summary, an air compressor works by drawing in air, compressing it to increase its pressure, storing the compressed air, regulating the output pressure, and releasing it for use in various applications. This process allows for the generation of a continuous supply of compressed air for a wide range of industrial, commercial, and personal uses.

China supplier 7.5kw 15kw 22kw Screw Air Compressor High Pressure Air Compressor AC Air Compressor Direct Driven Air Compressor Oilless Oil Free Air Compressor   lowes air compressorChina supplier 7.5kw 15kw 22kw Screw Air Compressor High Pressure Air Compressor AC Air Compressor Direct Driven Air Compressor Oilless Oil Free Air Compressor   lowes air compressor
editor by CX 2024-03-27