As a widely used general-purpose machinery, screw air compressors are used in all aspects of production. According to their different lubrication methods, they can be divided into oil-free air compressors and oil-free air compressors. So what is the difference between the two?

 1. Different oil content. Oil-free and oil-free in air compressors generally refer to the amount of oil content in the gas discharged from the exhaust port of the air compressor. Generally, oil-free air compressors have a larger oil content. Oil-free machines do not contain no oil, but the oil content is relatively small, about 0.01ppm, so this oil content can be used to distinguish between oil-free and oil-free air compressors. 

2. Different working principles. From a structural point of view, there is no difference between the bearings of oil-free air compressors and oil-free air compressors. However, from the working principle point of view, there are obvious differences between the two. There is no oil involved in the operation of oil-free air compressors. Whether it is an oil-free piston machine or an oil-free screw air compressor, they will generate a lot of high temperature during operation. If it is an oil-free 

 air compressor, the participation of oil will take away the high temperature generated during the compression process of the air compressor, thereby cooling the machine.

3. Oil-free air compressors do not involve oil, and a large amount of high temperature may be generated during the compression process, which can easily cause high-temperature failures. How to reduce the occurrence of high-temperature failures? In fact, a special high-temperature resistant material called Teflon or molybdenum disulfide is used inside the oil-free air compressor to replace oil to solve the high temperature during the compression process of the air compressor, thereby achieving the purpose of oil-free compression. Because the oil-free air compressor is lubricated by water, the compressed gas is cleaner than that of the oil-injected air compressor. Therefore, oil-free screw air compressors are often used in the food, medical and other industries. Yingpeng oil-free air compressors are highly efficient and energy-saving, with a long service life. 

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