The difference between oil compressor and oil-free compressor

What is the difference between an oil compressor and an oil-free compressor?

When many people see this problem, they will think that oil-free air compressors are definitely oil-free, and oil-free air compressors are all oil-free.

But in fact, this statement is not rigorous. Today, I 'd like to introduce these two in detail. Oil-injected screw compressor is a kind of oil compressor, which refers to the compressor with lubricating oil in the compression chamber of the main engine.

Oil-free screw compressor is a kind of oil-free compressor, that is, there is no lubricating oil in the compression chamber to participate in the compression process, such as oil-free screw compressor, oil-free scroll compressor, oil-free rotary gear compressor, water screw compressor, centrifugal compressor, these are oil-free compressor series products.

Therefore, because there is no oil, the main difference is whether there is lubricating oil in the compression chamber.

As an important part of the compressed air system, the air compressor should be selected according to the gas needs.