China best Highly Brand Bmvf37 Ridgid Permanent Magnet Industrial Screw Air Compressor air compressor oil

Product Description

Product Introduction
Highly Brand BMVF37 Ridgid Permanent Magnet Industrial Screw Air Compressor

Oil injected screw air compressor has become the mainstream of air compressor development in the world. It has extremely superior and reliable performance. It has small vibration, low noise, high efficiency and few vulnerable parts. It has incomparable performance advantages of piston compressor (under the same exhaust pressure). The precise coordination between the male and female rotors and between the rotor and the main engine shell reduces the back- flow leakage and improves the efficiency; Only the rotors are meshed with each other, and reciprocating motion without cylinder, which reduces the source of vibration and noise; The unique lubrication method brings many advantages:

1. With the pressure difference generated by itself, lubricating oil is continuously injected into the compression chamber and bearing to simplify the complex mechanical structure.

2. The injected lubricating oil can form oil film between the rotors, and the primary can take secondary rotor to rotate, Without the help of high precision synchronous gear.

3. The injected lubricating oil can increase the air tightness.

4. The lubricating oil absorbs a lot of compression heat, so even if the compression ratio reaches 16, The head can still be controlled below the carbon deposition and degradation temperature of general lubricating oil, There is no friction between the rotor and the outside of the machine due to different expansion coefficient.

5. Lubricating oil reduces the noise caused by high frequency compression.

6. A small amount of oil into the compressed air, pneumatic tools have a certain lubrication.

Product Parameters

Screw group

5: 6 Gear rotor

Compression method

Continuous, CHINAMFG

Compressed air outlet pressure


Compressed air outlet temperature


Compressed air outlet temperature

10ºC~15ºC higher than the ambient temperature

Volume of Lubricating Oil

About 16.5liters

Motor speed


Rated power


Air capacity




Upper air temperature


Lower limit of air temperature


Fuel consumption

Exhaust oil content is less than 3PPM

Noise level


Dimensions (length×width×height) (mm)


Detailed Photos

Wider range of speed regulation, higher accuracy of regulation, wider range of air supply pressure and higher energy efficiency.

The patented design of weak magnetic control, pressure control and simple and stable permanent magnet motor open-loop control can adapt to a variety of adverse working conditions and make the system more stable.


The patented design of weak magnetic control, pressure control and simple and stable permanent magnet motor open-loop control can adapt to a variety of adverse working conditions and make the system more stable.

Motor and screw host coaxial, higher efficiency. The BMVF series is the CHINAMFG industry to achieve the screw host, synchronous motor, permanent magnet control electrical control synchronous design, and to achieve the advantages of cooperation.



Working Pressure


Motor Power




























BMVF15G 0.65-1.0













BMVF37G 0.65-1.0













BMVF55G 0.65-1.0





BMVF75 0.65-1.0







BMVF90 0.65-1.0





BMVF110 0.65-0.8







BMVF132 0.65-0.8





Why Choose Us

      CHINAMFG group is a state-level large scale enterprise headquartered in HangZhou, ZHangZhoug province, China. Over the last 60 years CHINAMFG Group has grown to become a significant diversified engineering company developing high value machinery for industry worldwide. CHINAMFG group is the largest rock drill manufacturer in the world, and the largest air compressor manufacturer in China. Exports are shipped to over 25 countries .Today we produce over 30 000 rotary screw and 250 000 reciprocating compressors annually.By the year of 2014 our sales amount was close to RMB 2 billion. CHINAMFG group also has the high-quality customer service system.
      Our company is the authorized agent of CHINAMFG Group, specializing in air compressor, energy-saving transformation service and mining engineering construction machinery. We provide comprehensive technical support and after-sales service to customers.

      CHINAMFG is headquartered in HangZhou in ZHangZhoug, China. It has subsidiaries in ZheJiang , Chgonqing, ZheJiang , ZheJiang , Hong Kong, Seattle, San Diego, Orlando, Melbourne, Singapore, Jakarta, Leobersdorf, Budapest and Belgrade, as well as offices in Russia, Colombia, Brazil, Korea, Malaysia and Thailand.


      Advanced Equipment–Advanced equipment guarantees product quality. Over the years, we have received unanimous praise from overseas users for our integrity and high-quality product quality.

      The air compressor is guaranteed for 1 year. In addition to wearing parts and consumables, if the spare parts within the warranty period are broken, the company provides free spare parts replacement, but the buyer needs to pay the freight. Please ask customer service for specific warranty rules.


ZHangZhoug Stars Energy Saving Technology Co., Ltd.

If you want to know more information, please contact us!

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After-sales Service: One Year Warranty
Warranty: One Year
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Horizontal
US$ 2340/Piece
1 Piece(Min.Order)

Request Sample



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

How Do You Maintain the Air Quality in a Screw Compressor System?

Maintaining air quality in a screw compressor system is crucial to ensure the performance, efficiency, and reliability of the compressed air. Here’s a detailed explanation:

1. Proper Intake Filtration:

Install high-quality intake filters to prevent contaminants, such as dust, dirt, and debris, from entering the screw compressor system. These filters should have an appropriate filtration rating to effectively capture particles of the desired size. Regularly inspect and clean or replace the intake filters to maintain their effectiveness.

2. Compressed Air Dryers:

Use compressed air dryers, such as refrigerated dryers or desiccant dryers, to remove moisture from the compressed air. Moisture can lead to corrosion, damage to pneumatic equipment, and compromised air quality. The type of dryer selected depends on the specific application requirements and the desired level of moisture removal.

3. Oil Removal Filters:

In oil-injected screw compressors, oil is used for lubrication, which can contaminate the compressed air. Install oil removal filters downstream of the compressor to remove any oil carryover from the compressed air. These filters typically use coalescing technology to separate and trap oil particles, ensuring clean air quality.

4. Condensate Management:

Effectively manage condensate, which is formed when moisture in the compressed air condenses as it cools. Install condensate drains and separators to remove and properly dispose of condensate. Improper condensate management can lead to water contamination in the compressed air system.

5. Regular Maintenance:

Perform regular maintenance tasks as recommended by the manufacturer, including oil changes, filter replacements, and inspections. Proper maintenance helps ensure that the compressor system operates efficiently and minimizes the risk of contaminants entering the compressed air.

6. Air Receiver Tank Maintenance:

If the screw compressor system includes an air receiver tank, regularly inspect and clean the tank to remove any accumulated debris or contaminants. Additionally, ensure that the tank’s drain valve is functioning correctly to remove any water or condensate from the tank.

7. Leak Detection and Repair:

Regularly inspect the compressed air system for leaks. Leaks not only waste energy but also allow contaminants from the surrounding environment to enter the system. Use appropriate leak detection methods, such as ultrasonic detectors or soapy water solutions, to identify and promptly repair any leaks.

8. Monitor and Control Operating Conditions:

Monitor and maintain proper operating conditions within the screw compressor system. This includes monitoring discharge pressure, temperature, and other relevant parameters to ensure they are within acceptable ranges. Implement appropriate control strategies, such as regulating compressor capacity or adjusting dryer settings, to optimize air quality while meeting the specific application requirements.

9. Training and Awareness:

Provide training to operators and maintenance personnel on the importance of air quality in a screw compressor system. Ensure they understand proper maintenance procedures, the significance of filtration, and how to identify and address potential air quality issues.

10. Compliance with Regulations:

Be aware of and comply with relevant regulations and standards governing air quality in your specific industry or application. This may include adherence to guidelines such as ISO 8573, which specifies air purity classes for different contaminants in compressed air systems.

By following these practices, you can maintain the air quality in a screw compressor system, ensuring clean, reliable, and high-quality compressed air for various applications.

air compressor

Are There Different Types of Screw Compressors?

Yes, there are different types of screw compressors available, catering to various application requirements. Here’s an overview of the main types:

1. Oil-Injected Screw Compressors:

Oil-injected screw compressors, also known as lubricated screw compressors, are the most common type. These compressors require the injection of a small amount of lubricating oil into the compression chamber. The oil serves multiple purposes, including lubrication, cooling, sealing, and reducing friction between the rotors. Oil-injected screw compressors are widely used in industrial applications where a small amount of oil in the compressed air is acceptable.

2. Oil-Free Screw Compressors:

Oil-free screw compressors are designed to operate without the need for oil lubrication. These compressors incorporate specialized rotor coatings, such as PTFE (polytetrafluoroethylene) or other non-stick materials, to reduce friction and eliminate the need for oil. Oil-free screw compressors are preferred in applications that require oil-free and contaminant-free compressed air. Industries like food and beverage, pharmaceuticals, electronics, and others often rely on oil-free screw compressors to ensure the purity of the compressed air.

3. Variable Speed Drive (VSD) Screw Compressors:

VSD screw compressors, also known as variable frequency drive (VFD) screw compressors, are equipped with a variable speed drive system. This system allows the compressor to adjust the rotational speed of the motor and, consequently, the speed of the screw rotors. By varying the speed, VSD screw compressors can closely match the compressed air or gas demand, resulting in energy savings and improved efficiency. VSD screw compressors are particularly beneficial in applications with varying air demand, as they can adapt their output accordingly.

4. Two-Stage Screw Compressors:

Two-stage screw compressors consist of two sets of rotors arranged in series. The first stage compresses the air or gas to an intermediate pressure, and the second stage further compresses it to the desired final pressure. Two-stage screw compressors are commonly used in applications that require higher discharge pressures. By dividing the compression into two stages, these compressors can achieve higher efficiency and improved performance in high-pressure applications.

5. Water-Injected Screw Compressors:

Water-injected screw compressors, also known as liquid-injected screw compressors, utilize water or a water-glycol mixture as a sealing and cooling medium. The water injection helps in sealing the compression chamber and reduces the discharge temperature, enhancing the compressor’s efficiency. Water-injected screw compressors are often used in applications where oil contamination is a concern, such as in the pharmaceutical and food processing industries.

Each type of screw compressor has its own advantages and is suitable for specific applications. The choice of the screw compressor type depends on factors such as the desired level of air purity, the need for oil-free operation, energy efficiency requirements, and the operating conditions of the application.

China best Highly Brand Bmvf37 Ridgid Permanent Magnet Industrial Screw Air Compressor   air compressor oilChina best Highly Brand Bmvf37 Ridgid Permanent Magnet Industrial Screw Air Compressor   air compressor oil
editor by CX 2024-05-14

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