China Best Sales Wholesale Factory Qr3-44p Portable Electric High Pressure Small 4HP Piston Air Compressor air compressor oil

Product Description

Model Refrigerat Horsepower
Power source Nominal Capacity W/W
The Evaporating Temperature
-15ºC 11540
QR3-44 2 44 220V/3PH/60Hz
5977 2.9 1850 2580 4370 5977 8110
QR3-52 2.5 52 7146 2.9 2260 3240 54 3 2970 3960 6420 86~8 11540
QR3-74 3.5 74.2 9984 2.9 2805 4296 7276 9814 13056
QR3-90 4 90.2 113 3 2970 3960 6420 86~8 11540
QR3-74P 3.5 74.2 9984 2.9 2805 4296 7276 9814 13056
QR3-90P 4 90.2 11300 2.9 3388 4425 7956 11300 15719
QR3-112P 5 112.5 14780 2.8 4360 5890 10450 14780 25710
QR3-124P 6 124.4 16650 2.8 5320 7080 11970 16650 22760
QR3-134P 7 134.8 18230 2.8 5780 7710 13120 18230 24806
QR3-44P R22 2 44 220V/3PH/60Hz
5770 2.9 1960 2480 4300 5770 7830
QR3-52P 2.5 52 7050 2.9 2370 3180 5300 7050 9200
QR3-58P 3 58.2 7900 3 2720 3680 5950 7900 10300
QR3-62P 3 62.7 8500 3 2890 3830 6300 8500 11450
QR3-74P 3.5 74.2 9860 2.9 3000 4300 7330 9860 12900
QR3-90P 4 90.2 11250 2.9 3100 4370 7840 11250 16000
QR3-112P 5 112.5 14900 2.8 4470 6130 10600 14900 2 0571
QR3-124P 6 124.4 16640 2.8 5160 6970 11860 16640 23360
QR3-134P 7 134.8 17800 2.75 5630 7500 12630 17800 25200
Model Refrigerat Horsepower
Power source Nominal Capacity W/W
The Evaporating Temperature
-10ºC 0ºC
QL52 R404a 2.5 52 220-240V/1PH/50Hz
2180 1.5 730 1310 2189 2660 4410 6100
QL62 3 62.7 2760 1.5 1040 1728 2765 2930 5421 7900
QL3-52 2.5 52 220V/3PH/60Hz
2180 1.5 730 1310 2180 2660 4410 6100
QL3-74 3.5 74.2 3135 1.5 1380 2016 3135 3796 6220 8644
QL3-112 5 112.5 4350 1.5 1743 2704 4350 5335 9038 12740
QL3-134 7 134.8 5520 1.5 2378 3540 5520 6688 11060 15430

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After-sales Service: Standard
Warranty: 1year
Lubrication Style: Lubricated
US$ 300/Piece
1 Piece(Min.Order)


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air compressor

What are the advantages of using an air compressor in construction?

Using an air compressor in construction offers numerous advantages that contribute to increased efficiency, productivity, and versatility. Here are some key benefits of using air compressors in construction:

  • Powering Pneumatic Tools: Air compressors are commonly used to power a wide range of pneumatic tools on construction sites. Tools such as jackhammers, nail guns, impact wrenches, drills, and sanders can be operated using compressed air. Pneumatic tools are often preferred due to their lightweight, compact design and ability to deliver high torque or impact force.
  • Efficient Operation: Air compressors provide a continuous and reliable source of power for pneumatic tools, allowing for uninterrupted operation without the need for frequent battery changes or recharging. This helps to maintain a smooth workflow and reduces downtime.
  • Portability: Many construction air compressors are designed to be portable, featuring wheels or handles for easy maneuverability on job sites. Portable air compressors can be transported to different areas of the construction site as needed, providing power wherever it is required.
  • Versatility: Air compressors are versatile tools that can be used for various applications in construction. Apart from powering pneumatic tools, they can also be utilized for tasks such as inflating tires, cleaning debris, operating air-operated pumps, and powering air horns.
  • Increased Productivity: The efficient operation and power output of air compressors enable construction workers to complete tasks more quickly and effectively. Pneumatic tools powered by air compressors often offer higher performance and faster operation compared to their electric or manual counterparts.
  • Cost Savings: Air compressors can contribute to cost savings in construction projects. Pneumatic tools powered by air compressors are generally more durable and have longer lifespans compared to electric tools. Additionally, since air compressors use compressed air as their power source, they do not require the purchase or disposal of batteries or fuel, reducing ongoing operational expenses.
  • Reduced Electrocution Risk: Construction sites can be hazardous environments, with the risk of electrocution from electrical tools or equipment. By utilizing air compressors and pneumatic tools, the reliance on electrical power is minimized, reducing the risk of electrocution accidents.

It is important to select the appropriate air compressor for construction applications based on factors such as required air pressure, volume, portability, and durability. Regular maintenance, including proper lubrication and cleaning, is crucial to ensure the optimal performance and longevity of air compressors in construction settings.

In summary, the advantages of using air compressors in construction include powering pneumatic tools, efficient operation, portability, versatility, increased productivity, cost savings, and reduced electrocution risk, making them valuable assets on construction sites.

air compressor

What is the impact of altitude on air compressor performance?

The altitude at which an air compressor operates can have a significant impact on its performance. Here are the key factors affected by altitude:

1. Decreased Air Density:

As altitude increases, the air density decreases. This means there is less oxygen available per unit volume of air. Since air compressors rely on the intake of atmospheric air for compression, the reduced air density at higher altitudes can lead to a decrease in compressor performance.

2. Reduced Airflow:

The decrease in air density at higher altitudes results in reduced airflow. This can affect the cooling capacity of the compressor, as lower airflow hampers the dissipation of heat generated during compression. Inadequate cooling can lead to increased operating temperatures and potential overheating of the compressor.

3. Decreased Power Output:

Lower air density at higher altitudes also affects the power output of the compressor. The reduced oxygen content in the air can result in incomplete combustion, leading to decreased power generation. As a result, the compressor may deliver lower airflow and pressure than its rated capacity.

4. Extended Compression Cycle:

At higher altitudes, the air compressor needs to work harder to compress the thinner air. This can lead to an extended compression cycle, as the compressor may require more time to reach the desired pressure levels. The longer compression cycle can affect the overall efficiency and productivity of the compressor.

5. Pressure Adjustments:

When operating an air compressor at higher altitudes, it may be necessary to adjust the pressure settings. As the ambient air pressure decreases with altitude, the compressor’s pressure gauge may need to be recalibrated to maintain the desired pressure output. Failing to make these adjustments can result in underinflated tires, improper tool performance, or other issues.

6. Compressor Design:

Some air compressors are specifically designed to handle higher altitudes. These models may incorporate features such as larger intake filters, more robust cooling systems, and adjusted compression ratios to compensate for the reduced air density and maintain optimal performance.

7. Maintenance Considerations:

Operating an air compressor at higher altitudes may require additional maintenance and monitoring. It is important to regularly check and clean the intake filters to ensure proper airflow. Monitoring the compressor’s operating temperature and making any necessary adjustments or repairs is also crucial to prevent overheating and maintain efficient performance.

When using an air compressor at higher altitudes, it is advisable to consult the manufacturer’s guidelines and recommendations specific to altitude operations. Following these guidelines and considering the impact of altitude on air compressor performance will help ensure safe and efficient operation.

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 Best Sales Wholesale Factory Qr3-44p Portable Electric High Pressure Small 4HP Piston Air Compressor   air compressor oilChina Best Sales Wholesale Factory Qr3-44p Portable Electric High Pressure Small 4HP Piston Air Compressor   air compressor oil
editor by CX 2024-02-07