Oil-free air compressor need to be lubricated?

Q: Do oil-free air compressors need to be lubricated?

Answer: Oil-free air compressors do not need to be filled with lubricating oil. Oil-free air compressors are commonly used in two series, water-lubricated oil-free air compressors and dry oil-free air compressors.

For example, the water-lubricated oil-free air compressor produced by Shanghai Granklin Group uses water instead of oil for lubrication inside the head of the air compressor. The gas compressed after the head works without oil is naturally oil-free.