An air compressor is a pressure generating device and a converting device that converts mechanical energy into air pressure energy. As a air power source conversion device, it is widely used in all aspects of daily life. For example: construction, steel, mining and chemical industry plants, car assembly line, especially screw air compressors are widely used in machinery, metallurgy, electronics and electricity, medicine, packaging, chemicals, food, mining, textiles, transportation and many other industrial fields, and become the mainstream products of compressing air.

What is the difference between oil-free air compressors and oil-based air compressors? Literally, oil-free air compressors are easily distinguished from oil-based air compressors. In terms of their power generation equipment and energy efficiency, they are completely different. What are the main differences?

In terms of oil content, the presence of oil and no oil in the car air compressor generally refers to the amount of oil contained in the air discharged from the compressor's exhaust port. Generally, oil-based air compressors have more oil content, and oil-free air compressors are not without oil content , but the oil content is little, about 0.01ppm, so this oil content can be used to distinguish between oil-based air compressors and oil-free air compressors. There is also an all-oil-free air compressor, which is not lubricated with oil, but with a resin material, so the final exhaust air containing no oil, therefore, it is called an all-oil-free air compressor.

From a structural point of view, there is no difference between bearings for oil-free compressor for car and oil-based air compressors. However, from the working principle, there is a clear difference between the two.

Oil-free air compressors are oil-free during operation. Whether it is an oil-free piston machine or an oil-free screw air compressor, a large amount of high temperature will be generated during operation. If there is oil in the oil-free air compressor, the high temperature generated during the compression of the air compressor for car tires will be taken away to cool the machine.

The oil-free auto air compressor does not contain oil, and a large amount of high temperature may be generated during the compression process, which brings some trouble to the air compressor. How to solve such a high temperature problem and make the air compressor operate normally? In fact, a special high temperature resistant material, Teflon or molybdenum disulfide, is used inside the oil-free air compressor to replace the oil to solve the high temperature problem during the compression process, thereby achieving the purpose of oil-free compression.

To some extent, oil-free automotive air compressors are cleaner and more environmentally friendly than oil-based air compressors. Therefore, it is very suitable for hospitals, laboratories, schools and other institutions.