The difference between oil compressed air and oil-free compressed air

The main difference between oil-free compressed air and oil-free compressed air is whether lubricating oil is used in the compression process. The following is a specific comparison:

use of lubricating oil:

oiled compressed air: During the compression process, lubricating oil is used to lubricate the internal parts of the compressor to reduce wear and frictional heat. The lubricating oil will mix with the air and leave a certain amount of oil mist in the compressed air.

Oil-free compressed air: No lubricating oil is used in the compression process, which avoids the influence of oil mist on air quality.

Air quality:

oil compressed air: Due to the presence of lubricating oil, the compressed air will contain a certain amount of oil, which may cause pollution to some applications.

Oil-free compressed air: higher air quality, no oil, suitable for high air quality requirements, such as food, medical, electronics and other industries.

Compressor Type:

compressed air with oil: usually reciprocating compressors or screw compressors are used. These compressors require lubricating oil during the compression process to ensure normal operation.

Oil-free compressed air: Oil-free screw compressors or centrifugal compressors are usually used. These compressors are designed without lubricating oil.

Maintenance and use costs:

oil compressed air: It is necessary to replace the lubricating oil regularly and dispose of the waste oil, and the maintenance cost is relatively high.

Oil-free compressed air: no need to change the lubricating oil regularly, and the maintenance cost is relatively low.

Regarding the water-lubricated oil-free frequency conversion screw air compressor of Shanghai Grankering Group, this product adopts water lubrication technology and does not need to add lubricating oil, so it will not produce oil and exhaust gas pollution, and meets environmental protection requirements. At the same time, the air compressor also uses permanent magnet frequency conversion technology, which can automatically adjust the operating speed of the compressor according to actual needs, avoid energy waste, and achieve high efficiency and energy saving. In addition, the product also has the advantages of stable operation, low noise and convenient maintenance.

In summary, there are obvious differences between oil-free compressed air and oil-free compressed air in the compression process. The water-lubricated oil-free variable frequency screw air compressor of Shanghai Granklin Group provides users with high-quality compressed air solutions with the characteristics of high efficiency, environmental protection and stability.