China supplier Oil Free Screw Air Compressors of Series 11-55kw air compressor parts

Product Description

Product Presentatio

Compressor Type Max Working Pressure Capacity FAD Installed Motor Power Noise Level Weight Connection
bar(e) psi l/s m3/min kw dB(A) kg
OF11A 7.5  109.0  25.9  1.6  11 68 1142 G1”
8.5  123.0  22.6  1.4  11 68 1142 G1”
10.0  145.0  19.1  1.1  11 68 1142 G1”
OF15A 7.5  109.0  37.2  2.2  15 69 1150 G1”
8.5  123.0  34.8  2.1  15 69 1150 G1”
10.0  145.0  29.4  1.8  15 69 1150 G1”
OF18A 7.5  109.0  47.6  2.9  18 69 1170 G1”
8.5  123.0  45.3  2.7  18 69 1170 G1”
10.0  145.0  36.9  2.2  18 69 1170 G1”
OF22A 7.5  109.0  58.5  3.5  22 70 1181 G1”
8.5  123.0  52.7  3.2  22 70 1181 G1”
10.0  145.0  44.6  2.7  22 70 1181 G1”
OF30A/W 7.5  109.0  78.2  4.7  30 67 1458 G1 1/2”
8.5  123.0  73.3  4.4  30 67 1458 G1 1/2”
10.0  145.0  65.1  3.9  30 67 1458 G1 1/2”
OF37A/W 7.5  109.0  96.1  5.8  37 68 1460 G1 1/2”
8.5  123.0  91.6  5.5  37 68 1460 G1 1/2”
10.0  145.0  82.2  4.9  37 68 1460 G1 1/2”
OF45A/W 7.5  109.0  113.9  6.8  45 74 1465 G1 1/2”
8.5  123.0  108.5  6.5  45 74 1465 G1 1/2”
10.0  145.0  100.3  6.0  45 74 1465 G1 1/2”
OF55A/W 7.5  109.0  143.5  8.6  55 78 1723 G2”
8.5  123.0  138.6  8.3  55 78 1723 G2”
10.0  145.0  132.3  7.9  55 78 1723 G2”
Size L(mm) W(mm) H(mm)
1785 1571 1800
PS: The above air flow data was collected when the ambient temperature was 20ºC.

Oil-free Screw Air Compressors

ISO CLASS 0: Oil free certification
Oil-free air is suitable for a wide range of industries where air quality is critical to end products and production processes. Among them, pharmaceutical, hospital oxygen, electronics, filling, food and beverage processing production processes and environments, even the smallest amount of oil pollution will lead to the quality of the products produced and the qualification rate will be reduced, which will lead to a significant increase in the cost of enterprises.


Compression assembly parts drawing
1. Large flow intake valve
2, Low voltage host
3, High voltage host
4, Precision transmission gear box 5, High efficiency main motor

Large flow low noise centrifugal fan
Low power consumption;
Low running noise;
High air volume and high back pressure.

Oil-free rotary tooth compression rotor
Self-profile high-efficiency toothed rotor;
Fine special coating;
Can quickly reach the lowest energy consumption under no load.


Precision transmission gear box
Self-designed compact gear box;
High precision signal gear;

PT1000 high precision temperature sensor;
The current type pressure sensor ensures more accurate data.

Electronic level sensing drain valve
Reduce compressed air emissions and waste, Improve; condensate drainage efficiency and extend compressor life.

Oil filter
High quality precision filter;
The lubricating oil is cleaner and longer.

Air filter
High quality precision filter;
Improved air filtration accuracy;
Less resistance for air to pass through;
Guaranteed air quality in the rear stage.

Built-in compression rotor purge system
Extended compression rotor life;
Protect the oil-free rotor from moisture corrosion during shutdown.

Oil mist separator
Active condensate gearbox oil mist;
Improve environmental pollution inside and outside the machine;
Small structure for easy maintenance.

Applicable industry

Pharmaceutical industry
100% oil-free air helps to prevent contamination during processing (e.g. fermentation, aeration, pharmaceutical production, hospital oxygen production, automated production lines).

Medical care
Preferred choice for hospitals, dental clinics, medical device manufacturing, laboratory or clinical work environments.

Electronic products industry
Small and medium-sized electronics factory precision circuit board production and electronic component patch, semiconductor factory integrated circuit packaging process.

The food and beverage industry
100% pure, clean, oil-free air for a variety of uses such as fermentation, packaging, conveying, aeration, filling production and capping of alcoholic and beverage products, cleaning, instrument air.


Company Profile

HangZhou Hylein Energy & Environmental Technology Co., Ltd. is located in HangZhou, Pearl River Delta, known as China’s compressor production base, is a professional engaged in all kinds of screw air compressor, nitrogen machine, oxygen generator, vacuum pump, magnetic suspension compressor R & D, production and sales of manufacturing enterprises, with standard production assembly line, the introduction of Europe and North America mature and experienced technology, Focus on providing a full range of services for various industries.
We strictly follow the IS09001 quality system standards and related industry standards, and throughout the product design, procurement, manufacturing, inspection, sales and service of the entire process, we always adhere to the global procurement strategy to ensure the superior performance of each air compressor, we pay attention to the development of new products, the latest energy-saving products are providing quality services for the global industrial energy-saving cause.
In the ZheJiang -ZheJiang Railway oxygen supply system air compressor project, we overcome high altitude, ultra-low temperature, ultra-high temperature, huge dust, frequent switching power supply and other problems.

After-sales Service

Equipment support High efficiency and energy saving equipment since the start of normal commissioning, to ensure the normal operation of the equipment.

Service scheme Monthly, quarterly regular arrangement of personnel to the user phone or on-site equipment operation inspection, testing work, timely understanding of unit operation dynamics, effective answer to user equipment operation questions, and do the corresponding need to improve maintenance, maintenance, to ensure the long-term effective work of the equipment, while providing service reports every time.

Technical service As long as the user needs equipment and technical help and consultation, the company will accurately reply within 2 hours, and provide the relevant technical information.

Service team We have a CHINAMFG theoretical knowledge, practical ability of strong service team and high-quality management team.

Corresponding time Our company will respond within 2 hours after receiving the notification of the failure of the user’s equipment, provide the fastest solution, and arrange technicians to arrive at the scene as soon as necessary.

Warranty commitment High efficiency and energy saving equipment since the start of normal commissioning, the whole machine warranty for 1 year.



Q1: What’s your delivery time?

O: It takes about 15 days, if there is any urgent order, please contact us.


Q2: How long is your air compressor warranty?

O: One year for the whole machine when the compressor leave our factory.


Q3: How about your after-sales service?

O:1. Provide customers with installation and commissioning online instructions.

    2. Well-trained engineers available to overseas service

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Lubrication Style: Oil-free
Cooling System: Air Cooling
Power Source: AC Power
Installation Type: Stationary Type
Type: Single Screw Compressor
Specification: 11-55kw


air compressor

What Is the Noise Level of Screw Compressors?

The noise level of screw compressors can vary depending on several factors, including the compressor’s size, design, operating conditions, and the presence of noise-reducing features. Here’s a detailed explanation:

Screw compressors are known for their relatively low noise levels compared to other types of compressors, such as reciprocating compressors. However, the actual noise level can still vary depending on the specific compressor model and its operating parameters.

The noise level of screw compressors is typically measured in decibels (dB) and can range from around 60 dB to 90 dB or higher. It’s important to note that the noise level is logarithmic, meaning that a small increase in decibel level represents a significant increase in perceived noise intensity.

Several factors can influence the noise level of screw compressors:

  • 1. Compressor Size and Design: Larger screw compressors tend to produce higher noise levels compared to smaller ones. This is because larger compressors generally have more powerful motors and larger rotating components, which can generate more noise. The design of the compressor, including the type of rotor profiles and the presence of noise-reducing features, can also impact the noise level.
  • 2. Operating Conditions: The operating conditions of the compressor, such as the speed of rotation and the discharge pressure, can affect the noise level. Higher speeds and pressures may result in increased noise production. Additionally, the presence of pulsations or vibrations in the system can contribute to noise generation.
  • 3. Sound Insulation and Enclosures: Some screw compressors come with built-in sound insulation or enclosures to reduce noise levels. These features help contain the noise within the compressor unit and minimize the propagation of noise to the surrounding environment. Compressors equipped with sound insulation or enclosures generally have lower noise levels compared to open-frame compressors.
  • 4. Installation and Surrounding Environment: The installation of the compressor and the characteristics of the surrounding environment can influence the perceived noise level. Factors such as the proximity of the compressor to sensitive areas, the presence of sound-absorbing materials, and the layout of the facility can impact the noise propagation and overall noise perception.
  • 5. Maintenance and Wear: Proper maintenance of the compressor, including regular inspection and lubrication of components, can help minimize noise levels. Wear and tear on the compressor’s internal parts can lead to increased noise production, so timely repairs or component replacements are important to maintain optimal performance and minimize noise.

It’s worth noting that noise levels are typically provided by manufacturers as specifications for each compressor model. These specifications can help users select compressors with noise levels that meet their specific requirements or comply with local noise regulations.

In summary, the noise level of screw compressors can range from around 60 dB to 90 dB or higher, depending on factors such as compressor size, design, operating conditions, and the presence of noise-reducing features. Proper installation, maintenance, and the use of sound insulation or enclosures can help minimize noise levels and create a more comfortable and quieter operating environment.

air compressor

Can Screw Compressors Be Used for Medical Air Supply?

Yes, screw compressors can be used for medical air supply. Here’s a detailed explanation:

Screw compressors are commonly employed in various applications, including medical air supply systems. Medical air is a critical utility in healthcare facilities, used for various purposes such as respiratory therapy, anesthesia, and surgical tools. Here are some key points to consider:

1. Reliability and Efficiency:

Screw compressors are known for their reliability and efficiency. They can provide a continuous and reliable source of compressed air, ensuring a stable supply for medical applications. The rotary screw design allows for smooth and efficient compression, minimizing energy consumption and maximizing system performance.

2. Oil-Free Operation:

In medical applications, it is crucial to ensure the purity of the compressed air. Screw compressors can be designed and certified to provide oil-free air, eliminating the risk of oil contamination in the medical air supply. Oil-free screw compressors incorporate specialized sealing systems and filtration to prevent oil carryover, making them suitable for medical air applications.

3. Air Quality Standards:

Medical air must meet specific air quality standards to ensure patient safety and treatment effectiveness. Standards such as the European Pharmacopoeia (Ph. Eur.) or the United States Pharmacopeia (USP) define the required purity levels for medical air, including limits on particulate matter, moisture content, and microbial contamination. Screw compressors can be equipped with appropriate filtration and purification systems to meet these standards.

4. Integrated Drying and Filtration:

Some screw compressors designed for medical air applications incorporate integrated drying and filtration systems. These systems remove moisture and contaminants from the compressed air, ensuring it meets the required quality standards. Integrated drying systems can include refrigerated dryers, desiccant dryers, or membrane dryers, depending on the specific needs of the medical air supply system.

5. Redundancy and Backup Systems:

Medical air supply systems often require a high level of reliability and continuity. Screw compressors can be configured with redundancy and backup systems to ensure uninterrupted supply. Multiple compressors can be installed in parallel, with automatic switching mechanisms to maintain supply in case of a compressor failure or maintenance activities.

6. Monitoring and Alarms:

Modern screw compressors used in medical air supply systems often feature advanced monitoring capabilities. They can continuously monitor and record key parameters such as pressure, temperature, and system performance. Alarms and alerts can be configured to notify operators or maintenance personnel in case of abnormal conditions or potential issues with the compressor.

7. Compliance with Standards and Regulations:

When using screw compressors for medical air supply, it is essential to comply with relevant standards and regulations. These may include medical device regulations, electrical safety standards, and guidelines specific to medical gas systems. Compliance ensures that the medical air supply system meets the necessary safety and quality requirements.

In summary, screw compressors can be used for medical air supply, providing reliable and efficient compressed air for various medical applications. With their reliability, oil-free operation, adherence to air quality standards, integrated drying and filtration capabilities, and the ability to incorporate redundancy and monitoring features, screw compressors are well-suited for medical air supply systems in healthcare facilities.

air compressor

What Is a Screw Compressor?

A screw compressor is a type of positive displacement compressor that operates based on the principle of rotary motion. Here’s a detailed explanation:

Working Principle:

A screw compressor consists of two helical rotors, typically called male and female rotors, that rotate in opposite directions within a housing. The rotors have specially designed profiles that interlock with each other, creating a series of compression chambers as they rotate. As the rotors rotate, the volume of these chambers decreases, compressing the air or gas trapped inside.

Compression Process:

As the air or gas enters the screw compressor, it gets trapped between the rotors’ lobes or threads. As the rotors continue to rotate, the trapped air or gas is carried along the length of the rotors and gradually compressed. The compression occurs continuously and smoothly as the air or gas moves from the suction side to the discharge side of the compressor. The interlocking rotors ensure a continuous flow of compressed air or gas without pulsation.

Oil-Injected and Oil-Free Variants:

Screw compressors are available in both oil-injected and oil-free variants. In oil-injected screw compressors, a small amount of lubricating oil is injected into the compression chamber to provide lubrication, cooling, and sealing between the rotors. The oil also helps in reducing friction and minimizing wear. Oil-injected screw compressors are commonly used in various industrial applications where a small amount of oil in the compressed air is acceptable.

On the other hand, oil-free screw compressors are designed to operate without the need for oil lubrication. These compressors use specialized rotor coatings, such as PTFE (polytetrafluoroethylene) or other non-stick materials, to reduce friction and prevent the need for oil. Oil-free screw compressors are often favored in applications where oil-free and contaminant-free compressed air is essential, such as in food and beverage, pharmaceutical, and electronics industries.


Screw compressors are widely used in various industries for a range of applications. They are commonly employed in manufacturing plants, refineries, power generation facilities, and other industrial settings to supply compressed air or gas for pneumatic tools, process equipment, air conditioning systems, and more. The ability of screw compressors to deliver a continuous flow of compressed air or gas makes them suitable for applications that require a steady and reliable source of compressed air.


Screw compressors offer several advantages compared to other types of compressors. They provide high efficiency and can deliver a large volume of compressed air or gas. The continuous compression process results in smooth operation with minimal pulsation. Additionally, screw compressors are known for their compact design, low vibration levels, and relatively quiet operation.

In summary, a screw compressor is a rotary positive displacement compressor that uses interlocking helical rotors to compress air or gas. It operates based on a continuous compression process and is available in both oil-injected and oil-free variants. Screw compressors find widespread use in various industries for applications that require a reliable source of compressed air or gas.

China supplier Oil Free Screw Air Compressors of Series 11-55kw   air compressor partsChina supplier Oil Free Screw Air Compressors of Series 11-55kw   air compressor parts
editor by CX 2024-05-14

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