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China Twin Portable Air Screw Compressor Permanent Magnet VSD Oil Free Ingersoll Rand Fixed Speed Direct Drive Air Compressor with high quality

Product Description

Product Description
100% Oil-Free of charge H2o-Injected Rotary Screw Compressors
CW 7-250 OF/CW 7-250 OF VSD/ CW 7-132 OF LP/CW 7-a hundred and sixty OF PM  (7.5-250 kW/10-340 hp) 
OIL Free of charge – THE Maximum STHangZhouRD
Oil-cost-free air is utilized in all types of industries where  air top quality is paramount for the end solution and generation approach. These purposes consist of electronics, meals and beverage processing, pharmaceutical producing, chemical and petrochemical processing, fermentation, wastewater treatment method, pneumatic conveying, non-woven textile producing and several much more.

Over eighty% of a compressor’s lifecycle value is taken up by the vitality it consumes. In addition, the generation of compressed air can account for far more than forty% of a plant’s total electricity monthly bill. 

Company Profile


Our Positive aspects


HangZhou Airsun Machinery Technological innovation Co., Ltd. is a extensive services-oriented company specializing in oil injection, oil-free screw air compressor income, after-product sales upkeep, energy-saving substitute, squander warmth restoration and transformation, frequency conversion transformation and air energy-saving aluminum alloy pipeline installation. Dedicated to offering clients with substantial-top quality, substantial-effectiveness, strength-conserving and atmosphere-helpful air compressor products, delivering enterprises with skilled compressed air method options, and aiding buyers increase power-conserving performance, productivity and functioning expenses.


US $5,000
/ Piece
1 Piece

(Min. Order)


Warranty: The Machine Is Guaranteed for One Year
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Vertical
Structure Type: Closed Type
US $5,000
/ Piece
1 Piece

(Min. Order)


Warranty: The Machine Is Guaranteed for One Year
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Vertical
Structure Type: Closed Type

Choosing an Air Compressor

Considering a new Air Compressor? Here are some tips to make the decision easier. Learn the pros and cons of each type, including the differences between oil-injected and oil-free models, single stage and positive displacement. In addition, learn more about the different technologies that are available for your air compressor. It is important to choose an appropriate unit for the type of work you do. Here are some of the best compressors available today.

Positive displacement

There are several different types of air compressors, but most are positive displacement air compressors. They use a rotary or reciprocating component to compress air. The reciprocating component compresses air by reducing the volume of the chamber. Positive displacement compressors are used in bicycle pumps, chemical plants, and refrigerators. Positive displacement air compressors use multiple inlet ports. Despite the various types, the principle of operation remains the same.
Another type of positive displacement air compressor is a reciprocating piston. The piston inside a cylinder moves up and down, causing the compressed air to fill the upper part of the cylinder. These air compressors are used in a variety of different applications, including blowing bottles and gas pipelines. These air compressors can be water-cooled, lubricated, or non-lubricated. Different types have different capacities and air pressures.
A positive displacement flowmeter uses a rotating chamber that divides continuous fluid into discrete portions. The number of times the chamber is filled and discharged can be used to estimate the flow rate. The rotation speed of the measuring chamber is directly proportional to the flow rate. The drawbacks of this type of positive displacement flowmeter are that it is prone to jamming. If the fluid contains particles, it may be too thick for the meter to determine flow rate.
A negative displacement air compressor was invented in 1860 and is the oldest type of compressor. It uses two lobes positioned in a circular cavity. One rotor is connected to an engine, while the other pushes the other one to spin in the opposite direction. Negative displacement compressors are low-maintenance, but they do require more precision. They are often used in nuclear power plants because they use the kinetic energy of the rotating elements to produce pressure.


Oil-flooded or oil-injected air compressors use liquid to seal and lubricate moving parts and reduce noise. Oil-flooded air compressors are effective for a variety of pneumatic tools and accessories. Some models have a thermostat that controls the amount of oil used during operation. Other types of oil-flooded air compressors are piston-type models. Here is an overview of the basic differences between these two air compressors.
An oil-injected air compressor is more expensive than a comparable oil-free air compressor, but its advantages far outweigh its disadvantages. An oil-free compressor is quieter, requires less maintenance, and has a lower price tag. It also offers a greater degree of air purity. A number of other advantages may also make this type of air compressor the better choice for many industrial settings. If you need a high-pressure compressor in a tight space, consider the benefits of an oil-free system.
Oil-injected air compressors require more maintenance than oil-free models. Both types of air compressors offer similar capacity and ISO 8573-1 Class 0 and 1-2 purity, but the oil-injected systems require more air-treatment components. They require an activated carbon filter and coalescing filter. Oil-injected air compressors will likely remain the standard for industrial air compressors for many years. And since their performance and efficiency are comparable, it may be worthwhile to invest in some point-of-use air treatment.
Both types of air compressors have their benefits. However, choosing between oil-free and oil-injected air compressors is not as straightforward as you might think. Whichever type you choose, make sure it will meet your needs. The benefits of an oil-injected air compressor outweigh their disadvantages. In general, oil-injected air compressors are more durable and can last longer than oil-free models. The only downside is their higher price.


When choosing an air compressor for your company, you’ll need to determine what it is going to be used for. For example, if you’re planning on using it to power multiple workers, you should consider getting an oil-free compressor. An oil-free compressor, on the other hand, is quieter and can power several workers at a time. If you’re a contractor, the most important consideration will be the type of jobs you’ll be doing. Higher air pressure means greater demand for air flow, and more pressure can damage the equipment.
Oil-free compressed air is certified 100% free of contaminants. Technically, oil-free air is not completely free of foreign matter, but it is extremely low within the limits of practical air quality. A technically oil-free air compressor might have a total oil level of 0.003 mg/m3. If you’re in need of a technically oil-free air compressor, you must install an air treatment equipment after your current compressor.
If you’re in the manufacturing industry, a good oil-free air compressor will save you money and reduce your environmental impact. Many of these tools require air compressors to work, and this equipment will ensure that they don’t get contaminated. To buy the best oil-free compressor, you should learn a bit about the different terms used by compressor repair companies. ACFM, for example, is the amount of air that can be compressed in one minute at rated conditions.
When you’re using an oil-free air compressor, you should know that the overall life of the device will be much shorter. Compared to an oil-flooded rotary screw air compressor, an oil-free compressor typically has a lifespan of 50 thousand hours. But it’s important to understand that this type of compressor can still cause damage to piping and processes. Therefore, you should choose an oil-free compressor when you need to clean air for your business.


A single-stage air compressor, also known as a piston air compressor, compresses air only once before storing it in a cylinder. This stored air has enough energy to power a variety of pneumatic tools, such as screwdrivers, chisels, and wrenches. These units are also ideally suited for low-flow applications and are widely used in gas stations, auto shops, and various manufacturing plants.
A single-stage air compressor uses two valves – one for inlet and one for outlet – to transfer compressed air. Both valves are actuated by springs. The inlet valve has a slight curvature to provide protection from damage. The compressor’s outlet valve opens when the pressure in the cylinder is higher than the pressure in the storage tank. The piston moves very quickly inside the cylinder, exerting a high amount of force throughout the compression process. This high piston speed is a common cause of compressor wear and tear.
A single-stage air compressor is ideal for smaller tradesmen and small construction crews. Its lightweight and compact design make it easier to transport and store. While it may be tempting to buy the first cheap air compressor you see, it’s important to balance the price against performance to choose the right air compressor for your needs. The best single-stage air compressor is one that provides excellent performance and durability. Its two-stage counterpart is designed for larger construction teams and large applications.
The main difference between a single-stage and a two-stage air compressor lies in their capacity. A single-stage air compressor compresses air only once and delivers it into the storage tank, while a two-stage compressor compresses it twice, creating double the pressure. Because of this, single-stage air compressors are cheaper and versatile than their counterparts, which means that they can be used for multiple purposes.


A low-noise air compressor is a type of industrial compressor that is less noisy than regular air compressors. These are generally smaller machines designed for smaller factories and workshops with a few to several employees. They are designed to handle mid-weight volumes of compressed air per day. This type of compressor is especially useful for smaller manufacturing businesses that need to produce compressed air for medical applications. Small breweries can also benefit from the low-noise capabilities of these compressors.
Low-noise air compressors come in various sizes and features. For smaller jobs, you can purchase a one-gallon model that is lightweight and portable. For larger jobs, you can purchase one with a larger tank that can provide more pressure for longer jobs. However, a larger tank will make the compressor heavier and harder to transport. To avoid this, make sure to check the size of the tank and how much power it can handle.
Considering a low-noise air compressor for your business? If so, you’ve come to the right place. There are a variety of affordable and dependable low-noise options to choose from. A CAT 10020C, for example, is designed to provide high-volume air to many outlets at once. A CAT 10020C comes with a 10-gallon tank, wheels, and a carrying handle.
Noise levels can also affect the productivity of employees. When employees work with air compressors in close proximity to each other, they may develop tinnitus. If employees are free from tinnitus because of the loud noise, they are likely to work more efficiently. Moreover, it will be easier for them to focus and communicate efficiently. If you need a compressor, a low-noise one is an excellent choice.

China Twin Portable Air Screw Compressor Permanent Magnet VSD Oil Free Ingersoll Rand Fixed Speed Direct Drive Air Compressor     with high qualityChina Twin Portable Air Screw Compressor Permanent Magnet VSD Oil Free Ingersoll Rand Fixed Speed Direct Drive Air Compressor     with high quality
editor by czh 2023-01-22

China OEM 2 Stage Compression Pm VSD (Permanent magnet variable speed driven) Rotary Screw Air Compressor with high quality

Merchandise Description

two phase compression PM VSD (Everlasting magnet variable pace pushed) Rotary screw air compressor 

1. Firm introduces & advtanges of ZheJiang Great Air Compressor Production :

ZheJiang Fantastic Air compressor Co., ltd, is 1 foremost manufacture and exporter of air compressor in ZheJiang , China, Started 1957 years, coving an location of 200000 sq. meters. Now exporting to more than a hundred and twenty international locations. Has set up a huge income and support network at house and abroad.

GREAT’ s main items variety as blow:
-oil-injected rotary screw air compressor(fixed pace, variable speed medium & low force)
-portable rotary screw air compressor(diesel powered, electric motor driven)
– reduced strain screw air compressor
– outdoor screw air compressor 
– oil free screw blower(variable velocity)
-oil cost-free air compressor( scroll kind, dry type, water lubricated type)
-air remedy products( air dryer, air tanker, filers and so on.)

All of our machines are created for substantial realiable overall performance, easy servicing, and highest power performance. 


2. Goods introductions &advantages for  2 stage compression  screw air compressor :


Feature  for 2 stage compression screw air compressor :

The point out plainly classifies vitality efficiency levels restrict benefit. The 2 class  energy efficiency goods can conserve ten%~15% of the electricity than 3 class vitality performance items.and the 1 class energy effectiveness products  can preserve 10%~15% of the power than 2 class power effectiveness merchandise. power-preserving effect is remarkable .

Vitality -conserving theory :

  1. Curve twelve ‘3’ is an isothermal compression approach, it sort the area of 613 ‘4 with Y-axis which is the indicated work of isothermal compression
  2. Curve 123” is the 1 stage compression method, it form  the region 613 ”4 with Y-axis which is the indicator operate of the 1 stage compression.
  3. Curve 12, 22 ‘and 2′ 3 are the 2 stage compression process, and the sum of the spot 6125 and the location fifty two ’34 (6122’ 34) with Y-axis which is the indicator perform of the 2 stage compression.
  4. It can be observed from the diagram that the isothermal compression procedure 613 ‘4 area (indicating perform) is the smallest, but it is not possible to achieve isothermal compression in the air compressors’ true compression.

The 1 stage compression has the even bigger region of electrical power thirteen ‘3 than isothermal compression, whilst the 2 stage compression will save 22″ 33 “region of power.

Characteristics description:

  1. Oil injected screw air compressor can accomplish the normal electrical power method exhaust stress by only One stage compression. But from the see of vitality usage stage, the use of 2 stage of compression can successfully lessen energy use.
  2. So, ZheJiang Fantastic air compressor co., LTD. has introduced 2 stage compression of energy effectiveness screw air compressor. The 2 stage compressed-jet screw air compressor has far more potential of 12% to eighteen% than the single phase compressed injection screw  air compressor with the equivalent electricity. In other words and phrases, with the very same quantity of compressed air, the 2 stage compression can help save an common of fifteen% of electrical power in contrast with 1 stage compression
  3. 2 phase compression of oil injected screw equipment has the distinctive design and style of the air stop, it will combined the1 stage compression rotor and 2 stage compression rotor inside a chassis, make every single rotor can get best linear velocity by the equipment straight CZPT respectively, so the compression performance is greater. 

2 stage compression air compressor, consider the created-in spray curtain of cooling, CZPT impact is very good, significantly minimizes the temperature of compressed air, recognize the nearly isothermal compression, and can lessen the pressure loss of in between 1 class ~ 2 course, decrease compression ratio and enhance the compression effectiveness


  1. Following 1 stage compression, coolant by way of numerous jet hole on the entire body, type the mist jet shade, to amazing the hot 1 stage compressed air, drastically minimizes the compressed air temperature ahead of entering the 2 stage compression, which is in close proximity to to isothermal compression procedure, help save the power compression impact.
  2. Even without inter-phase cooling, 2 stage compression is more productive than solitary phase compression. This is simply because the quantity of air gets scaled-down soon after the 1 stage compression, so the 2nd stage compression can use a smaller diameter of the rotor, and the leakage charge of the device quantity is little.
  3. Reduce interior leakage: use 2 stage compression, minimize the compression ratio of every compression, reduce the leakage from the large pressure facet to the reduced stress aspect per class, and improve the quantity efficiency.
  4. Sounds reduction: the compression ratio of each and every compression is lowered by taking 2 stage compression, which greatly lowers the sounds, particularly the unloading sound
  5. 2 phase compression unit, besides for screw air conclude, the other method and framework arrangement of the unit is basically the same as the solitary stage compression, which is convenient for the upkeep and utilization to the user.
  6. For users  who need  large air consumption and repeatedly use, need to just take priority to use of a 2 phase compressed  1 class power effectiveness air compressor

TKL- Sequence of 1 class vitality effectiveness air compressor with 2 class,3 class vitality efficiency comparation:

  1. In contrast with the 2 class energy effectiveness air compressor unit, the electrical energy conserving value is: Power saving for every hour(6.twelve-5.forty five)*forty one.4=27.738KWH  saving for 8000 hours $27.738*8000*$.12=$26629
  2. In comparison with the 3 class vitality effectiveness air compressor unit, the electricity conserving price is: Strength cost savings for each hour (7.037-5.45)*4.14=65.7018KWH preserving for 8000 hours $sixty five.7018 *8000*$.12=$63074



three.Specialized Parameters for  Fantastic 2 stage compression PM VSD  screw air compressor:

four.Application :

six.Certification :

7. FAQ : 
Q1: Are you factory or trade business?  
A1: We are manufacturing unit.
Q2: Guarantee phrases of your equipment? 
A2: One particular year warranty for the device and technological assist according to your needs.
Q3: Will you provide some spare parts of the equipment? 
A3: Of course, of training course.
This autumn: How lengthy will you get to prepare production? 
A4: 380V 50HZ we can delivery the merchandise within twenty times. Other electrical power or other color we will supply within 30 days.
Q5: Can you accept OEM orders? 
A5: Yes, with specialist design and style staff, OEM orders are extremely welcome!

8. Make contact with :


Kinds of Air Compressors

There are numerous sorts of Air Compressors accessible on the market. Understand which 1 is appropriate for your needs and what makes 1 better than an additional. Discover out far more about One-phase versions, Oil-cost-free types, and Lower-sound types. This report will explain these kinds and support you decide which one you need to have. You can also learn about Air Compressors that have single-phase compressors. If you are seeking for a substantial-high quality compressor, this write-up will assist you choose a device.

Air Compressors

Air compressors operate by forcing atmospheric air by way of an inlet valve. As the piston moves down, it pulls atmospheric air into the chamber. As the piston rises, it forces the compressed air out of the cylinder via an exhaust valve. 1 of the most frequent types of air compressor is the reciprocating type. One more kind of compressor is a single-stage piston. These varieties of compressors compress air in a single stroke – equal to the complete rotation of the piston’s crankshaft.
These gadgets adjust electrical or mechanical vitality into pressurized air. When air is compressed, its volume decreases, rising its pressure. Air compressors typically have a minimum pressure of thirty bars. The lower pressure band is the selection of air pressure. Most compressors are managed independently, but network controls can be employed to interconnect numerous compressors. This sort of controller will not work for all varieties of compressors. There are other varieties of air compressors that can connect with every single other.
Compressed air has multiple apps in all sorts of industries. In agriculture, it can electrical power pneumatically driven material managing machines for irrigation and crop spraying. Dairy equipments also use compressed air. Compressors are also used in the pharmaceutical industry for mixing tanks, packaging, and conveyor programs. Portable air compressors, which can be run by diesel gas, are often used at distant drilling web sites. Moveable air compressors are also frequently utilized in oil and fuel. They can be employed to remotely management valves and set up reactor rods.
Whether you use an air compressor for agricultural needs or in a producing environment, there are some characteristics to take into account when picking an air compressor for your wants. A good compressor will have a security device. It will immediately shut off the input air and output air as soon as adequate compressing has been reached. These functions will assist your air compressor continue to be efficient and defend your tools. The protection system is an crucial function of any air compressor to enhance its overall effectiveness.
Vane air compressors are the most typical sort. They are generally more compact and less powerful than reciprocating piston compressors, so you can use 1 of these for purposes that are under 100 horsepower. The vane air compressors have low compression ratios and large capacities, but they are typically minimal to lower-electrical power apps. Vane compressors are inclined to run sizzling, and they generally have a minimal compression ratio. It is important to select the appropriate oil viscosity for your compressor.

Solitary-phase models

When comparing single-stage air compressors, seem for the phrase “phases.” Multi-phase compressors use two stages and can deal with much more capability and force. 1 phase involves pressurizing air employing a piston and a reduced-pressure cylinder. This compressed air is then moved to a storage tank. One-phase types are inclined to be far more vitality-productive than their two-stage counterparts. But if you don’t require a large-strain cylinder, a solitary-stage air compressor can be the very best selection.
Although one-phase air compressors create significantly less power, they can create ample air to power pneumatic resources and other pneumatic gear. These solitary-phase units are most valuable for more compact-scale house assignments and Do-it-yourself tasks. For a lot more industrial purposes, a twin-phase design is the best option. But if you’re in a hurry, a solitary-stage unit could be ample. In the long run, it depends on what you plan to do with the air compressor.
Single-phase air compressors attribute a one cylinder, 1 piston stroke for each revolution of pressurized air. Solitary-phase compressors are normally smaller sized and more compact, producing them a good option for more compact function environments. Their cfm capacity (cubic feet per moment) is an crucial indicator of working capacity. If you plan to use multiple pneumatic resources, you will most likely want a increased cfm model. Equally, the horsepower of solitary-stage compressors suggests its operating capability. One horsepower moves 550 lbs per foot for every moment.
Multi-phase air compressors are generally a lot more high-priced and a lot more vitality-successful than single-phase units, but they can offer increased air stream charges. While they could be more intricate, they can reduced general running bills. If you strategy on using your air compressor for industrial or commercial use, a dual-stage model may possibly be the best decision. Nevertheless, if you’re planning to use the air compressor for mass generation, a solitary-phase product may be the very best option.
Single-stage air compressors have the same piston measurement and quantity of inlets, whilst twin-phase models have a smaller sized initial piston and a a lot more time 2nd piston. Equally have a cooling tube in between the two pistons to minimize the air temperature before the next round of compression. The solitary-phase model is usually little and moveable, while the double-stage air compressor is stationary. These compressors can both be stationary and large.

Reduced-sounds versions

In spite of its title, lower-noise designs of air compressors are not all the very same. The sound amount of a compressor can be influenced by many aspects, including the energy supply and proximity to the machine. Reciprocal compressors are generally louder than electric kinds because of their many shifting areas. By contrast, rotary-screw and scroll compressors have much less transferring components and are quieter.
The noise level of a gas-run air compressor can be very higher, producing it unsuitable for use indoors. To fight this difficulty, you can pick an electrical model. The noise level of a compressor is mainly caused by motor friction. The protect of a piston is also a significant aspect in noise, as pistons with minimal covers will generate a whole lot of sound. Earlier, oil was needed for a peaceful compressor. Even so, this has altered many thanks to the medical industry’s desire for oil-totally free designs.
The Nuair EC28M Tranquil Air Compressor is yet another design that functions tranquil procedure. This air compressor tends to make 59dB of sound. This stage is reduced adequate to permit you to have on typical conversations whilst it cycles. In addition, this compressor has an industrial oil-free pump and a 2.8 Amp direct-travel induction motor. These two attributes make it a great decision for organizations.
Reduced-noise designs of air compressors are accessible for the design business. Nevertheless, these compressors are not necessarily lower-good quality, which is why you ought to consider the noise amount of your air instrument before acquiring a single. The experts at Mid-Tech can advocate the minimal-sound versions for your certain application and room. Noise can distract people who work in close proximity to the air compressor. That is why several organizations now choose for these designs.

Oil-totally free designs

A number of oil-free of charge types of air compressors are accessible, but what helps make them particular? Oil-free of charge compressors don’t include oil, so they are lubricated by grease instead. They’re a great selection if you are doing work with a little compressor and will not want to threat harmful it. On the other hand, oil-free of charge designs do make important amounts of heat, which can harm the compressor. Larger strain can grind the compressor in opposition to itself, or even warp it.
A few terms of information can support you choose the very best oil-cost-free air compressor for your wants. For instance, a compressor’s horsepower is a measurement of how powerful the motor is. Increased horsepower means a higher PSI or ACFM. You can also use the ACFM to compare the two. Scroll technological innovation is a modern air compression system that makes use of a stationary and cellular spiral. This minimizes the quantity of air in the compressor by directing it to the heart.
Buying an oil-free air compressor will not have to be a daunting process, though. A very good distributor can recommend you on what kind of oil-free of charge air compressor is correct for you. This way, you can help save cash and enjoy peace of brain whilst making use of your air compressor. And, of program, the best way to get a fantastic offer on an air compressor is to communicate to a distributor who is well-informed about the products accessible.
An oil-totally free air compressor is a wonderful alternative for companies that are delicate to the contamination of air. For instance, in the pharmaceutical and foodstuff market, a minuscule oil could spoil a item or even harm manufacturing tools. Oil-totally free air compressors typically have reduce maintenance fees than oil-flooded versions simply because there are much less shifting components. Due to the fact of this, oilless air compressors need much less upkeep and may even now require to be replaced occasionally.
A number of positive aspects of an oil-free air compressor in excess of an oil-lubricated 1 incorporate lower noise stages. Oil-cost-free air compressors tend to be significantly less noisy and run much more quietly than oil-injected kinds, but you must even now cautiously weigh the professionals and cons before creating a decision. Also, take into account how considerably you use your air compressor prior to deciding on a model. The pros outweigh the cons. In the conclude, you are going to be glad you selected an oil-free of charge air compressor.

China OEM 2 Stage Compression Pm VSD (Permanent magnet variable pace pushed) Rotary Screw Air Compressor     with substantial top qualityChina OEM 2 Stage Compression Pm VSD (Long term magnet variable speed driven) Rotary Screw Air Compressor     with large top quality