Tag Archives: dry screw

China factory 450kw Water Cooling High Efficiency Silent Industrial Oil Free Dry Two Stage Rotary Twin Screw Air Compressor portable air compressor

Product Description

       

   Specification
  Model Capacitiy (FAD)M3/min Power kw Noise level db Weight KG
7bar 8.5bar 10bar Water Cooling Air Cooling
OFA1 OFA15 2.4 2.1 1.8 15 74   1,030
OFA22 3.7 3.2 2.7 22 74   1,070
OFA30 4.8 4.4 4.0 30 74   1,300
OFA37 5.9 5.3 5.0 37 74   1,355
OFA45 7.0 6.5 6.1 45 74   1,390
OFA2 OFA55 9.2 7.9 7.3 55 74   1,860
OFA75 12.2 11.2 10.7 75 74   1,935
OFA90 14.7 13.5 12.7 90 74   2,000
OFA3 OFA110 19.3 17.2 16.0 110 74   3,660
OFA132 22.9 19.5 18.8 132 74   3,700
OFA4 OFA160 29.4 25.7 23.8 160 74   5,300
OFA200 36.6 33.1 30.4 200 74   5,380
OFA250 44.5 41.0 37.4 250 74   5,450
OFA275 47.4 43.0 41.0 275 74   5,500
OFA5 OFA315 51.5 47.6 46.0 315 74   6,000
OFA355 56.3 52.6 50.4 355 74   9,050
OFW1 OFW37 5.9 5.3 5.0 37 74 1,355  
OFW45 7.0 6.5 6.1 45 74 1,450  
OFW2 OFW55 8.8 7.9 7.3 55 74 1,800  
OFW75 11.9 11.2 10.7 75 74 1,850  
OFW90 14.3 13.5 12.7 90 74 1,925  
OFW3 OFW110 19.1 17.1 16.0 110 74 2,635  
OFW132 21.9 19.6 18.9 132 74 2,760  
OFW4 OFW160 28.3 26.1 24.2 160 74 3,850  
OFW200 36.1 33.1 30.4 200 74 4,000  
OFW250 43.1 41.0 37.0 250 74 4,100  
OFW275 46.4 43.0 41.0 275 74 4,300  
OFW5 OFW315 50.9 47.6 46.0 315 74 6,550  
OFW355 56.3 52.6 50.4 355 74 6,950  
OFW400 62.1 57.8 55.8 400 74 7,050  
OFW450 76.5 71.5 63.8 450 74 8,400  
OFW500 83.9 78.3 73.1 500 74 8,400  
OFW630 102.9 95.7 89.0 630 74 9,125  
OFW750 122.8 109.6 101.8 750 74 9,225  

    

Company Profile

     ZheJiang Napu compressor Technology Co.,LTD was established in 2012  based in ZheJiang ,specializing in oil-free rotary screw air compressors, offering a wide range of products from airends to compressors . 
       With over 10 years experience in oil free screw air compressor. NAPU Compressor is compliant with ISO 8573-1, Class 0 standard and audited by TUV Rheinland and China National Quality Inspection Center of Compressor and Refrigerator.   
        The company is also compliant with ISO 9001:14001 and is CHINAMFG in the domestic market for its quality-driven culture. The oil-free compressors manufactured by the company are used in a variety of sectors including some of our valued clients like CASC-China Aerospace Science Corporation, NORINCO-China North Industries Group, CNNC-China National Nuclear Group, CHANG AN AUTO, SINOPHARM, BYD and CALT and Sino-Chemical etc.
         Continuous improvement in productivity and efficiency is our goal, and we continue to offer an extensive services including our own branded oil-free compressor package as well as after-sales services for other leading brands.

 

Product Features

1. In house designed airend
2. 100% oil free air certified by Germany TUV.
3. Double-layer structure to reduce he noise.
4. Air Cooling and Water cooling are available.
5. VSD control are available.
6.Touch Screen PLC with preset running schedule, more intelligent control.
7.OEM&ODM service are accepted

 

FAQ

Q1. Are you trading company or manufacture ?
A: We are professional manufacture of oil free air compressors. More than 20 years of experience in air compressor manufacturing.
 
Q2. What’s payment term ?
A: T/T, Western Union, Paypal, Credit Card, and etc. Also we could accept USD, RMB, Euro and other currency.
 
Q3. How about your after-sales service ?
A: 1.We can provide customers with installation and commissioning online instructions.
   
Q4. How about your warranty?
A: One year for the whole machine and 5 years for screw air end, except consumable spare parts.
 
Q5. Do you have any certificate ?
A: Yes, we can offer CE ,ISO  and certificate as clients’ demande.
 
 
Q6. How do you control quality ?
A: 1. The raw materials are strictly inspected
    2. Each compressor must pass at least 8 hours of continuous testing before leaving the factory.
  
Q7.How long could your air compressor be used?
A: Usually, more than over 10 years.

After-sales Service: Online Support
Warranty: 12 Months
Lubrication Style: Oil-free
Cooling System: Water Cooling
Power Source: AC Power
Cylinder Position: Horizontal
Customization:
Available

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air compressor

What are the differences between stationary and portable air compressors?

Stationary and portable air compressors are two common types of air compressors with distinct features and applications. Here are the key differences between them:

1. Mobility:

The primary difference between stationary and portable air compressors is their mobility. Stationary air compressors are designed to be permanently installed in a fixed location, such as a workshop or a factory. They are typically larger, heavier, and not easily movable. On the other hand, portable air compressors are smaller, lighter, and equipped with handles or wheels for easy transportation. They can be moved from one location to another, making them suitable for jobsites, construction sites, and other mobile applications.

2. Power Source:

Another difference lies in the power source used by stationary and portable air compressors. Stationary compressors are usually powered by electricity, as they are designed for continuous operation in a fixed location with access to power outlets. They are connected to the electrical grid or have dedicated wiring. In contrast, portable compressors are available in various power options, including electric, gasoline, and diesel engines. This versatility allows them to operate in remote areas or sites without readily available electricity.

3. Tank Capacity:

Tank capacity is also a distinguishing factor between stationary and portable air compressors. Stationary compressors often have larger storage tanks to store compressed air for extended periods. The larger tanks enable them to deliver a continuous and steady supply of compressed air for longer durations without the need for frequent cycling. Portable compressors, due to their compact size and portability, generally have smaller tank capacities, which may be sufficient for intermittent or smaller-scale applications.

4. Performance and Output:

The performance and output capabilities of stationary and portable air compressors can vary. Stationary compressors are typically designed for high-volume applications that require a consistent and continuous supply of compressed air. They often have higher horsepower ratings, larger motor sizes, and higher air delivery capacities. Portable compressors, while generally offering lower horsepower and air delivery compared to their stationary counterparts, are still capable of delivering sufficient air for a range of applications, including pneumatic tools, inflation tasks, and light-duty air-powered equipment.

5. Noise Level:

Noise level is an important consideration when comparing stationary and portable air compressors. Stationary compressors, being larger and built for industrial or commercial settings, are often equipped with noise-reducing features such as sound insulation and vibration dampening. They are designed to operate at lower noise levels, which is crucial for maintaining a comfortable working environment. Portable compressors, while efforts are made to reduce noise, may produce higher noise levels due to their compact size and portability.

6. Price and Cost:

Stationary and portable air compressors also differ in terms of price and cost. Stationary compressors are generally more expensive due to their larger size, higher power output, and industrial-grade construction. They often require professional installation and may involve additional costs such as electrical wiring and system setup. Portable compressors, being smaller and more versatile, tend to have a lower upfront cost. They are suitable for individual users, contractors, and small businesses with budget constraints or flexible air supply needs.

When selecting between stationary and portable air compressors, it is essential to consider the specific requirements of the intended application, such as mobility, power source availability, air demands, and noise considerations. Understanding these differences will help in choosing the appropriate type of air compressor for the intended use.

air compressor

How do you troubleshoot common air compressor problems?

Troubleshooting common air compressor problems can help identify and resolve issues that may affect the performance and functionality of the compressor. Here are some steps to troubleshoot common air compressor problems:

1. No Power:

  • Check the power source and ensure the compressor is properly plugged in.
  • Inspect the circuit breaker or fuse box to ensure it hasn’t tripped or blown.
  • Verify that the compressor’s power switch or control panel is turned on.

2. Low Air Pressure:

  • Check the air pressure gauge on the compressor. If the pressure is below the desired level, the compressor might not be building up enough pressure.
  • Inspect for air leaks in the system. Leaks can cause a drop in pressure. Listen for hissing sounds or use a soapy water solution to identify the location of leaks.
  • Ensure the compressor’s intake filter is clean and not clogged, as this can restrict airflow and reduce pressure.

3. Excessive Noise or Vibration:

  • Inspect the compressor’s mounting and foundation to ensure it is secure and stable. Loose mounts can cause excessive noise and vibration.
  • Check for loose or damaged components, such as belts, pulleys, or motor mounts. Tighten or replace as necessary.
  • Verify that the compressor’s cooling system, such as the fan or fins, is clean and free from obstructions. Overheating can lead to increased noise and vibration.

4. Air Leaks:

  • Inspect all connections, valves, fittings, and hoses for leaks. Tighten or replace any loose or damaged components.
  • Apply a soapy water solution to suspected areas and look for bubbles. Bubbles indicate air leaks.
  • Consider using thread sealant or Teflon tape on threaded connections to ensure a proper seal.

5. Excessive Moisture in Compressed Air:

  • Check the compressor’s drain valve and ensure it is functioning properly. Open the valve to release any accumulated moisture.
  • Inspect and clean the compressor’s moisture separator or air dryer, if equipped.
  • Consider installing additional filtration or drying equipment to remove moisture from the compressed air system.

6. Motor Overheating:

  • Ensure the compressor’s cooling system is clean and unobstructed.
  • Check the motor’s air intake vents and clean any dust or debris that may be blocking airflow.
  • Verify that the compressor is not being operated in an excessively hot environment.
  • Check the motor’s lubrication levels and ensure they are within the manufacturer’s recommended range.
  • Consider using a thermal overload protector to prevent the motor from overheating.

If troubleshooting these common problems does not resolve the issue, it may be necessary to consult the manufacturer’s manual or seek assistance from a qualified technician. Regular maintenance, such as cleaning, lubrication, and inspection, can also help prevent common problems and ensure the optimal performance of the air compressor.

air compressor

What maintenance is required for air compressors?

Maintaining air compressors is essential to ensure their optimal performance, longevity, and safe operation. Regular maintenance helps prevent breakdowns, improves efficiency, and reduces the risk of accidents. Here are some key maintenance tasks for air compressors:

1. Regular Inspection: Perform visual inspections of the air compressor to identify any signs of wear, damage, or leaks. Inspect the compressor, hoses, fittings, and connections for any abnormalities. Pay attention to oil leaks, loose bolts, and worn-out components.

2. Oil Changes: If your air compressor has an oil lubrication system, regular oil changes are crucial. Follow the manufacturer’s recommendations for the frequency of oil changes and use the recommended oil type. Dirty or degraded oil can impact compressor performance and lead to premature wear.

3. Air Filter Cleaning or Replacement: Clean or replace the air filter regularly to ensure proper air intake and prevent contaminants from entering the compressor. Clogged or dirty filters can restrict airflow and reduce efficiency.

4. Drain Moisture: Air compressors produce moisture as a byproduct of the compression process. Accumulated moisture in the tank can lead to rust and corrosion. Drain the moisture regularly from the tank to prevent damage. Some compressors have automatic drains, while others require manual draining.

5. Belt Inspection and Adjustment: If your compressor has a belt-driven system, inspect the belts for signs of wear, cracks, or tension issues. Adjust or replace the belts as necessary to maintain proper tension and power transmission.

6. Tank Inspection: Inspect the compressor tank for any signs of corrosion, dents, or structural issues. A damaged tank can be hazardous and should be repaired or replaced promptly.

7. Valve Maintenance: Check the safety valves, pressure relief valves, and other valves regularly to ensure they are functioning correctly. Test the valves periodically to verify their proper operation.

8. Motor and Electrical Components: Inspect the motor and electrical components for any signs of damage or overheating. Check electrical connections for tightness and ensure proper grounding.

9. Keep the Area Clean: Maintain a clean and debris-free area around the compressor. Remove any dirt, dust, or obstructions that can hinder the compressor’s performance or cause overheating.

10. Follow Manufacturer’s Guidelines: Always refer to the manufacturer’s manual for specific maintenance instructions and recommended service intervals for your air compressor model. They provide valuable information on maintenance tasks, lubrication requirements, and safety precautions.

Regular maintenance is vital to keep your air compressor in optimal condition and extend its lifespan. It’s also important to note that maintenance requirements may vary depending on the type, size, and usage of the compressor. By following a comprehensive maintenance routine, you can ensure the reliable operation of your air compressor and maximize its efficiency and longevity.

China factory 450kw Water Cooling High Efficiency Silent Industrial Oil Free Dry Two Stage Rotary Twin Screw Air Compressor   portable air compressorChina factory 450kw Water Cooling High Efficiency Silent Industrial Oil Free Dry Two Stage Rotary Twin Screw Air Compressor   portable air compressor
editor by CX 2023-10-18