Standard for oil content of air compressor

Air compressor oil content standards may vary depending on the type and use of different air compressors.

Generally speaking, for ordinary air compressors, the liquid oil content in the compressed air shall not exceed 5 mg/m & sup3;, and the oil vapor content in the compressed air shall not exceed 0.5 mg/m & sup3;. This is to ensure the quality of compressed air and the normal operation of the air compressor. For oil injection screw air compressor, it is generally considered that the oil content of compressed air is not more than 3ppm (that is, the oil content per cubic meter of compressed air is not more than 3 mg) that is in line with the standard. Oil content exceeding this standard is often referred to as "high fuel consumption" or "flying oil", which is one of the common failure phenomena of air compressors.

In specific industries such as the food industry and the pharmaceutical industry, oil content standards are more stringent due to strict requirements for air quality. In the food industry, the oil content of compressed air should be less than 0.01 mg/m & sup3;. Similarly, in the pharmaceutical industry, because air is an important medium in the production process, the oil content of compressed air should also be less than 0.01 mg/m & sup3;. The requirements for air quality in the electronics industry are also relatively high. Because electronic components are very sensitive to dust and oil in the air, the oil content of compressed air should be less than 0.1 mg/m & sup3;. Although the chemical industry's requirements for oil content may vary depending on the specific situation, the usual standard is that it should not exceed 5 mg/m & sup3;.

In addition, for oil-free air compressors, the oil content of compressed air is more stringent. According to the ISO 8573-1 industry standard, the oil content of the compressed air of the oil-free air compressor must be less than 0.01 mg/m & sup3;, in order to reach the CLASS 0 level, is recognized as oil-free compressed air. The oil content in the outlet air of the micro-oil air compressor should also be kept at a low level, not higher than 0.01 mg/m & sup3;.

When selecting and using air compressors, please be sure to refer to relevant national and industry standards, and consult with suppliers or professionals to ensure that the performance and quality of air compressors meet actual needs. In addition, regular maintenance and inspection of the air compressor is required to ensure its normal and stable operation and compliance with the specified oil content standards.