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Air compressor exhaust oil content standard

2026-04-13Views:

Air compressor exhaust oil content standards are usually determined according to international standards and industry norms, these standards are designed to ensure the purity of compressed air and meet the needs of different application scenarios. The following is a detailed summary of the air compressor exhaust oil content standard:

1. international standards

according to the international standard ISO 8573-1:2010, the oil content of the air compressor outlet is divided into the following levels:

  • Class 0: Oil-free, that is, the oil content in the air is less than 0.01 mg/m & sup3;. This level of compressed air is suitable for applications with high air quality requirements, such as pharmaceutical, food processing, and electronics industries.
  • Class 1: Low oil, that is, the oil content in the air is less than 0.1 mg/m & sup3;. This level of compressed air is also suitable for high air quality requirements.
  • Class 2: General oil, that is, the oil content in the air is less than 1 mg/m & sup3;. This level of compressed air is suitable for general industrial production occasions.

2. the exhaust oil content of different types of air compressors

different types of air compressor exhaust oil content is very different. The following are some common types of air compressor exhaust oil content range:

  • domestic piston type oil lubricated air compressor: Exhaust oil content is 65~220 g/m & sup3;.
  • Less oil lubricated air compressor: Exhaust gas oil content is 30~40 g/m & sup3;.
  • Domestic oil-free lubrication air compressor (actually semi-oil-free lubrication): Exhaust gas oil content is 6~15 g/m & sup3;. It should be noted that the unit here is different from the mg/m & sup3 in the ISO standard, but it can be seen that the exhaust oil content of the oil-free air compressor is relatively low.
  • Oil-injected screw air compressor: Generally, the exhaust oil content is not more than 3ppm (I .e. 3 mg/m & sup3;), and even some models can reach below 5ppm. In theory, the exhaust gas of centrifuges and oil-free screw air compressors is oil-free, but considering the trace oil particles that may be contained in the air, it is difficult to achieve complete oil-free in practical applications.

3. influencing factors

the exhaust oil content of the air compressor is affected by many factors, including the type, design, maintenance status and use environment of the air compressor. The air compressor with long-term use or improper maintenance will greatly increase the oil content of the exhaust gas due to the damage and failure of the oil and gas separator in the machine.

4. Conclusion

in summary, the air compressor exhaust oil content standards are determined according to international standards and industry norms, and are affected by various factors such as air compressor type, design, maintenance status and use environment. When choosing an air compressor, it is necessary to determine the appropriate model and exhaust oil content standard according to the specific application and air quality requirements. At the same time, regular maintenance and inspection of the air compressor is also an important measure to ensure that the exhaust oil content meets the standard.

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