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China Professional Best Copper Wire Silicon Steel Sheet AC Motor Medical Silent Oil-Free Air Compressor 3*750W 3HP 8bar TUV CE Certification Two Years Warranty Support OEM air compressor oil

Product Description

  

Model BW703
Voltage/frequency

 

1.220-230V/50/60Hz
2.100-120V/50/60Hz
3.380-440v/50Hz
1,3optional
Power KW 2.34
HP 3
Volume flow L/min @0MPa 525
L/min @0.7MPa 165
Pressure Bar 8
MPa 0.8
Tank volume L 100
US gallons 26.5
Noisy dB 60
Pressure switch According to customer’s requirements .
Configuration optional

 

1. Add oil and water separator;

2. Add automatic drainer;

3.Air tank against rust spray

1,2,3 optional
Size L*W*H cm 100*36*59
Weight Kg 66
Packing Cartons or wooden cases size cm Wood 102*38*63

Typical application
For medical devices Laboratory use
Dental treatment chair For chromatographic analyzer
For qualification analyzer For woodworking
For plant gas supply Hardware and electromechanical
For automobile maintenance shop  

      Why choose CHINAMFG air compressor
1. It saves 10-30% energy than the air compressor produced by ordinary manufacturers.
2. It is widely used in medical oxygen generator and ventilator .
3.  A large number of high-speed train and automobile application cases, supporting – 41 to 70 ºC, 0-6000 CHINAMFG above sea level .
4. Medium and high-end quality, with more than 7000 hours of trouble free operation for conventional products and more than 15000 hours of trouble free operation for high-end  products.
5. Simple operation, convenient maintenance and remote guidance.
6. Faster delivery time, generally completed within 25 days within 1000 PCs.

 

Machine Parts

Name: Motor 
Brand: COMBESTAIR 
Original: China
1.The coil adopts the fine pure copper enameled wire, and the rotor adopts the famous brand silicon steel sheet such as ZheJiang baosteel.
2.The customer can choose the insulation grade B or F motor according to What he wants.
3.The motor has a built-in thermal protector, which can select external heat sensor.
4.Voltage from AC100V ~120V, 200V ~240V, 50Hz / 60Hz, DC6V~200V optional ; AC motor can choose double voltage double frequency ; DC Motor can choose the control of the infinitely variable speed.

Machine Parts

Name: Bearing
Brand: ERB , CHINAMFG , NSK 
Original: China ect.
1.Standard products choose the special bearing ‘ERB’ in oil-free compressor, and the environment temperature tolerance from -50ºC to 180 ºC . Ensure no fault operation for 20,000 hours.
2.Customers can select TPI, NSK and other imported bearings according to the working condition.

Machine Parts

Name: Valve plates
Brand: SANDVIK
Original: Sweden
1.Custom the valve steel of Sweden SANDVIK; Good flexibility and long durability.
2.Thickness from 0.08mm to 1.2mm, suitable for maximum pressure from 0.8 MPa to 1.2 MPa.

Machine Parts

Name: Piston ring
Brand: COMBESTAIR-OEM , Saint-Gobain
Original: China , France
1.Using domestic famous brand–Polytetrafluoroethylene composite material; Wear-resistant high temperature; Ensure more than 10,000 hours of service life.
2.High-end products: you can choose the ST.gobain’s piston ring from the American import.

serial
number
Code number Name and specification Quantity Material Note
1 212571109 Fan cover 2 Reinforced nylon 1571  
2 212571106 Left fan 1 Reinforced nylon 1571  
3 212571101 Left box 1 Die-cast aluminum alloy YL104  
4 212571301 Connecting rod 2 Die-cast aluminum alloy YL104  
5 212571304 Piston cup 2 PHB filled PTFE  
6 212571302 Clamp 2 Die-cast aluminum alloy YL102  
7 7050616 Screw of cross head 2 Carbon structural steel of cold heading M6•16
8 212571501 Air cylinder 2 Thin wall pipe of aluninun alloy 6A02T4  
9 17103 Seal ring of Cylinder 2 Silicone rubber  
10 212571417 Sealing ring of cylinder cover 2 Silicone rubber  
11 212571401 Cylinder head 2 Die-cast aluminum alloy YL102  
12 7571525 Screw of inner hexagon Cylinder head 12   M5•25
13 17113 Sealing ring of connecting pipe 4 Silicong rubber  
14 212571801 Connecting pipe 2 Aluminum and aluminum alloy connecting rod LY12  
15 7100406 Screw of Cross head 4 1Cr13N19 M4•6
16 212571409 Limit block 2 Die-cast aluminum alloy YL102  
17 000402.2 Air outlet valve 2 7Cr27 quenching steel belt of The Swedish sandvik  
18 212571403 valve 2 Die-cast aluminum alloy YL102  
19 212571404 Air inlet valve 2 7Cr27 quenching steel belt of The Swedish sandvik  
20 212571406 Metal gasket 2 Stainless steel plate of heat and acidresistance  
21 212571107 Right fan 1 Reinforced nylon 1571  
22 212571201 Crank 2 Gray castiron  H20-40  
23 14040 Bearing 6006-2Z 2    
24 70305 Tighten screw of inner hexagon flat end 2   M8•8
25 7571520 Screw of inner hexagon Cylinder head 2   M5•20
26 212571102 Right box 1 Die-cast aluminum alloy YL104  
27 6P-4 Lead protective ring 1    
28 7095712-211 Hexagon head bolt 2 Carbon structural steel of cold heading M5•152
29 715710-211 Screw of Cross head 2 Carbon structural steel of cold heading M5•120
30 16602 Light spring washer 4   ø5
31 212571600 Stator 1    
32 70305 Lock nut of hexagon flange faces 2    
33 212571700 Rotor 1    
34 14032 Bearing 6203-2Z 2    

 


FAQ

Q1: Are you factory or trade company?  
A1: We are factory.

Q2: What the exactly address of your factory? 
A2: Our factory is located in Linbei industrial area No.30 HangZhou City of ZHangZhoug Province, China

Q3: Warranty terms of your machine? 
A3: Two years warranty for the machine and technical support according to your needs.

Q4: Will you provide some spare parts of the machines? 
A4: Yes, of course.

Q5: How long will you take to arrange production? 
A5: Generally, 1000 pcs can be delivered within 25 days

Q6: Can you accept OEM orders? 
A6: Yes, with professional design team, OEM orders are highly welcome

Q7:Can you accept non-standard customization?

A7:We have the ability to develop new products and can customize, develop and research according to your requirements

Shipping Cost:

Estimated freight per unit.



To be negotiated
After-sales Service: Remote Guided Maintenance
Warranty: 2 Years
Principle: Mixed-Flow Compressor
Samples:
US$ 260/Piece
1 Piece(Min.Order)

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Order Sample

Customization:
Available

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air compressor

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.

air compressor

What safety precautions should be taken when working with compressed air?

Working with compressed air requires adherence to certain safety precautions to prevent accidents and ensure the well-being of individuals involved. Here are some important safety measures to consider:

1. Personal Protective Equipment (PPE):

Wear appropriate PPE, including safety goggles or a face shield to protect eyes from flying debris or particles, hearing protection to reduce noise exposure, and gloves to safeguard hands from potential hazards.

2. Compressed Air Storage:

Avoid storing compressed air in containers that are not designed for this purpose, such as soda bottles or makeshift containers. Use approved and properly labeled air storage tanks or cylinders that can handle the pressure and are regularly inspected and maintained.

3. Pressure Regulation:

Ensure that the air pressure is regulated to a safe level suitable for the equipment and tools being used. High-pressure air streams can cause serious injuries, so it is important to follow the manufacturer’s recommendations and never exceed the maximum allowable pressure.

4. Air Hose Inspection:

Regularly inspect air hoses for signs of damage, such as cuts, abrasions, or leaks. Replace damaged hoses immediately to prevent potential accidents or loss of pressure.

5. Air Blowguns:

Exercise caution when using air blowguns. Never direct compressed air towards yourself or others, as it can cause eye injuries, hearing damage, or dislodge particles that may be harmful if inhaled. Always point blowguns away from people or any sensitive equipment or materials.

6. Air Tool Safety:

Follow proper operating procedures for pneumatic tools. Ensure that tools are in good working condition, and inspect them before each use. Use the appropriate accessories, such as safety guards or shields, to prevent accidental contact with moving parts.

7. Air Compressor Maintenance:

Maintain air compressors according to the manufacturer’s guidelines. Regularly check for leaks, clean or replace filters, and drain moisture from the system. Proper maintenance ensures the safe and efficient operation of the compressor.

8. Training and Education:

Provide adequate training and education to individuals working with compressed air. Ensure they understand the potential hazards, safe operating procedures, and emergency protocols. Encourage open communication regarding safety concerns and implement a culture of safety in the workplace.

9. Lockout/Tagout:

When performing maintenance or repairs on compressed air systems, follow lockout/tagout procedures to isolate the equipment from energy sources and prevent accidental startup. This ensures the safety of the individuals working on the system.

10. Proper Ventilation:

Ensure proper ventilation in enclosed areas where compressed air is used. Compressed air can displace oxygen, leading to a potential risk of asphyxiation. Adequate ventilation helps maintain a safe breathing environment.

By adhering to these safety precautions, individuals can minimize the risks associated with working with compressed air and create a safer work environment.

air compressor

How is air pressure measured in air compressors?

Air pressure in air compressors is typically measured using one of two common units: pounds per square inch (PSI) or bar. Here’s a brief explanation of how air pressure is measured in air compressors:

1. Pounds per Square Inch (PSI): PSI is the most widely used unit of pressure measurement in air compressors, especially in North America. It represents the force exerted by one pound of force over an area of one square inch. Air pressure gauges on air compressors often display pressure readings in PSI, allowing users to monitor and adjust the pressure accordingly.

2. Bar: Bar is another unit of pressure commonly used in air compressors, particularly in Europe and many other parts of the world. It is a metric unit of pressure equal to 100,000 pascals (Pa). Air compressors may have pressure gauges that display readings in bar, providing an alternative measurement option for users in those regions.

To measure air pressure in an air compressor, a pressure gauge is typically installed on the compressor’s outlet or receiver tank. The gauge is designed to measure the force exerted by the compressed air and display the reading in the specified unit, such as PSI or bar.

It’s important to note that the air pressure indicated on the gauge represents the pressure at a specific point in the air compressor system, typically at the outlet or tank. The actual pressure experienced at the point of use may vary due to factors such as pressure drop in the air lines or restrictions caused by fittings and tools.

When using an air compressor, it is essential to set the pressure to the appropriate level required for the specific application. Different tools and equipment have different pressure requirements, and exceeding the recommended pressure can lead to damage or unsafe operation. Most air compressors allow users to adjust the pressure output using a pressure regulator or similar control mechanism.

Regular monitoring of the air pressure in an air compressor is crucial to ensure optimal performance, efficiency, and safe operation. By understanding the units of measurement and using pressure gauges appropriately, users can maintain the desired air pressure levels in their air compressor systems.

China Professional Best Copper Wire Silicon Steel Sheet AC Motor Medical Silent Oil-Free Air Compressor 3*750W 3HP 8bar TUV CE Certification Two Years Warranty Support OEM   air compressor oilChina Professional Best Copper Wire Silicon Steel Sheet AC Motor Medical Silent Oil-Free Air Compressor 3*750W 3HP 8bar TUV CE Certification Two Years Warranty Support OEM   air compressor oil
editor by CX 2023-10-07

China Good quality Oil Free Silent Piston Air Compressor Rotary High Pressure Dental Noiseless Oil-Less Portable Air Tools Painting Gun Mute AC 2kw 2X1000W Cooper Motor 50L 25L with Great quality

Product Description

Oil free Silent piston AIR COMPRESSOR rotary high pressure Dental noiseless oil-less portable  Ac 2*1000W cooper motor 25L/50L tank
Model: U9802-50

Features:
* Low noise, <70dB
* Oil free, Environment friendly
* 100% copper motor, longer working life
* Low energy consumption, high effective
* Simple structure, easy maintenance
* Stable, durable quality

 

Lubrication Style: Oil-free
Cooling System: Air Cooling
Cylinder Arrangement: Balanced Opposed Arrangement
Cylinder Position: Horizontal
Structure Type: Closed Type
Compress Level: Double-Stage
Customization:
Available

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air-compressor

How to Repair and Maintain an Air Compressor

A compressor is a device used to move air from one place to another. Air enters the air compressor through the intake valve. Inside the compressor, the vanes on the inner rotor rotate within an eccentric cavity. The self-adjusting length arm divides the space into multiple cavities of different sizes. As the rotor rotates, air fills the cavity. As air flows around the cavity, it builds pressure and is squeezed out of the compressor output.

Positive displacement

Positive displacement air compressors use reciprocating pistons to compress air. Gas is drawn in during the suction stroke and compressed by moving the piston in the opposite direction. It then discharges the compressed air by moving it in the opposite direction. This type of air compressor is most commonly found in automobiles, refrigerators, and other applications that require high pressure. However, it is not as efficient as a centrifugal compressor.
Most modern air compressors use positive displacement. Positive displacement models capture a volume of air in the compression chamber and distribute it when the pump is operating at maximum capacity. They are more economical than their negative displacement counterparts. Reciprocating screw air compressors are the most common positive displacement compressors. The reciprocating screw air compressor adopts a water jacket around the cylinder and is often used in processes such as oil drilling.
A bicycle pump is an example of positive displacement compression. Air is drawn into the cylinder and compressed by the moving piston. A piston compressor works on the same principle, but it uses a rotating crankshaft or connecting rod to complete the movement of the pistons. There are two types of positive displacement compressors: single-acting and double-acting. Both types work on the same principle, both are positive displacement compressors. The difference between the two types is the pressure ratio.
In air compression, positive displacement compression reduces the volume of the fluid and reduces its viscosity. This results in higher pressure ratios and is used in centrifugal, axial, and scroll compressors. Positive displacement is a common feature of most air compressors. Positive displacement compressors offer the same benefits and are more energy-efficient when applied to oil-free and gas applications. This type of compression is usually the best choice for low-pressure applications.

oil free

If you’re looking for an air compressor for your business, consider an oil-free air compressor. These models offer cleaner, quieter operation than traditional air compressors and require less maintenance. They also meet ISO Class 0 or Class 1 air purity requirements. Oil-free air compressors are also quieter, with fewer moving parts and less noise. These advantages make oil-free air compressors an ideal solution for many commercial applications.
Air purity is critical in many industries. Even the tiniest drop of oil can damage production equipment or damage products. The best way to find an oil-free air compressor for your business is to consider the process and end product. As air quality improves, more and more businesses are turning to oil-free compressors. Some of the advantages and disadvantages of these air compressors are:
When choosing an oil-free air compressor, it is important to understand the terminology used in the industry. Knowing these terms will make it easier for you to choose the right compressor for your needs. ACTFM, or actual cubic feet per minute, is an industry term for measuring the amount of air pumped in one minute under rated conditions. Although a simple number, it can be very useful in determining which type of air compressor is best for your application.
The ISO 8573-1 international standard defines air quality and provides air purity classifications. The strictest classification is air purity class 0. Many manufacturers claim that oil-free air compressors meet this standard. However, a class 0 oil-free air compressor does not necessarily mean that the air is free of contaminants. In fact, Class 0 is the benchmark for air purity. While zero air quality is the highest level, that doesn’t mean it’s completely oil-free.
air-compressor

double acting

A double-acting air compressor is a device that uses compressed air to generate electricity. Its working principle is based on piston and connecting rod. The connecting rod connects the crankshaft to the piston through pins and caps. The piston moves as the piston moves. Rods are usually made of forged carbon steel. In terms of service and maintenance, double-acting compressors require regular vise maintenance and proper cleaning.
The displacement of the compressor is a measure of the displacement that the piston can produce in a certain period of time. Displacement is usually expressed in actual cubic feet per minute. The exact calculation depends on the type of cylinder and the configuration of the compressor. Single-acting cylinders can have head-end or crank-end displacement, both of which can be measured using the displacement equation. A double-acting air compressor will use this equation. 4 and 6 calculate the displacement.
Double-acting air compressors have multiple cylinders and are made of cast iron. They are water-cooled and have a mechanical connection between the piston and connecting rod. A double-acting compressor compresses air twice per revolution of the motor. One cylinder moves up, while the other cylinder moves down. The piston moves down, allowing air to enter through valve #1. During the operation of the compressor, the temperature of the air and gas increases.
Double-acting air compressors typically have high pressure and are considered workhorses. Double-acting compressors also feature intercooling and double compression. As a result, these machines tend to last longer than single-acting compressors. Its low speed and dual compression make it a workhorse in the compressor industry. Double-acting air compressors are workhorses and versatile devices.
air-compressor

fuel tank pressure switch

You can adjust the pressure in the air compressor tank by adjusting the differential pressure. You can turn the mainspring clockwise or counterclockwise to increase or decrease the pressure. This valve will open when the pressure is low enough to start the compressor. If the pressure is too low, the valve should be closed. The cut-in and cut-out pressures should be set to appropriate values. After adjusting the tank pressure, check the hysteresis of the tank pressure switch and set the desired shutoff pressure.
If the pressure in the tank falls below the cut-in level, the tank pressure switch must be replaced. You can test the switch with a multimeter. Make sure the switch is not damaged. If you can’t find the switch, you can look at the other sections. If you find any damaged or missing parts, you should replace them. Otherwise, it may be time to check the tank pressure switch. You may need to disassemble the compressor and remove the switch.
The fuel tank pressure switch is an important part of the air compressor. It keeps you informed of the amount of air delivered by the compressor. If your tank or tank is damaged, your readings will be wrong. If the pressure switch is damaged, it will not function properly and result in incorrect readings. Fortunately, there are some easy ways to fix this. To prevent this from happening, keep the tank pressure switch in good condition.
When the air pressure in the tank drops to the cut-in pressure setting, the switch allows power to flow through it. This will start the motor and pump of the air compressor. Then, if the pressure in the tank rises above the cut-off level, the switch will trip and stop the compressor. This will prevent it from being over-pressurized. Power flow will continue to flow to the motor. Depending on your compressor model, you can change the cut-in and cut-out pressures as needed.

energy source

The power supply of the air compressor is very important. Most air compressors run on 12 VDC, which is ideal for automotive use. Alternatively, you can buy a switching power supply for around $20. No matter which power supply you choose, you must ensure that it can support the maximum current of the compressor. You can find power supplies in all sizes, from quarter-horsepower to five-horsepower.
The voltage required for a three-phase air compressor will vary. Three-phase air compressors require three separate power cords and a three-phase electrical service panel. This is because a standard 120/240-volt electrical service panel is not sufficient to power a three-phase compressor. Additionally, three-phase compressors require three separate isolated wires for the engine and motor circuits. Three-phase compressors do not require a neutral wire.

China Good quality Oil Free Silent Piston Air Compressor Rotary High Pressure Dental Noiseless Oil-Less Portable Air Tools Painting Gun Mute AC 2kw 2X1000W Cooper Motor 50L 25L   with Great qualityChina Good quality Oil Free Silent Piston Air Compressor Rotary High Pressure Dental Noiseless Oil-Less Portable Air Tools Painting Gun Mute AC 2kw 2X1000W Cooper Motor 50L 25L   with Great quality
editor by CX