2026-04-10Views：
The oil level classification standard of air compressor is mainly defined according to the oil content in compressed air. The following is a detailed summary of the oil level classification standard of air compressor:
classification of 1. international standard ISO 8573-1:
oil content ≤ 0.01 mg/m & sup3;: considered as oil-free.
Oil content ≤ 0.1 mg/m & sup3;: considered as low oil state.
Oil content ≤ 1 mg/m & sup3;: considered as normal.
division of 2. national standards:
grade 1: Oil content ≤ 0.1 mg/m & sup3;.
Grade 2: The oil content is between 0.1 and 0.5 mg/m & sup3.
Grade 3: The oil content is between 0.5 and 1 mg/m & sup3.
Grade 4: The oil content is between 1 and 5 mg/m & sup3.
Grade 5: Oil content between 5 and 10 mg/m & sup3.
Grade 6: The oil content is between 10 and 20 mg/m & sup3.
Please note that different industries and application scenarios may have different requirements for the oil content of air compressors. For example, the pharmaceutical, food, electronics and other industries usually have higher requirements for the oil content of air compressors to ensure product quality and stability of the production process. Therefore, when selecting an air compressor, the required oil level should be determined according to specific needs.
In addition, the quality and use of air compressor lubricating oil will also affect the oil content in the compressed air. In order to maintain the purity of the compressed air and the normal operation of the equipment, the air compressor lubricating oil should be replaced and checked regularly, and high-quality lubricating oil should be used.
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