2026-04-10Views：
The main difference between micro-oil screw compressors and oil-free screw compressors is whether they use lubricating oil during their work, and the resulting differences in performance and application.
Use of lubricating oil:
micro-oil screw compressor: This type of compressor uses a small amount of lubricating oil during operation. Lubricating oil is mainly used to lubricate and cool screws and bearings, and also plays a role in sealing and reducing noise. However, the lubricating oil may be mixed with the compressed gas, resulting in a certain amount of oil contained in the compressed gas.
Oil-free screw compressor: Unlike micro-oil screw compressors, oil-free screw compressors do not use lubricating oil during operation. This avoids mixing of the oil with the compressed gas, thereby ensuring the purity of the compressed gas.
Performance and application:
micro-oil screw compressor: Due to the use of lubricating oil, this type of compressor runs relatively smoothly, has low noise, and has less wear on the screw and bearings, which extends the service life of the equipment. However, because the compressed gas may contain oil, it may not be applicable in some occasions that require high gas purity (such as food, medical and other industries).
Oil-free screw compressor: Because no lubricating oil is used, the compressed gas produced by the oil-free screw compressor has a high purity, which is suitable for occasions with strict requirements on gas purity. However, due to the lack of lubricating and cooling effects of the lubricating oil, the screw and bearings of such compressors may wear relatively quickly and may be noisy.
In summary, there are significant differences in the use, performance and application of lubricating oil between micro-oil screw compressors and oil-free screw compressors. Which type of compressor to choose depends on the specific application needs and occasions.
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