Does the oil-free screw compressor still need lubricating oil?

The gas of the oil-free screw compressor does not contact the lubricating oil at all during the compression process. The male rotor drives the female rotor to rotate through the gear. The synchronous gear ensures the rotor gap when transmitting power, so the rotors do not contact each other and leave a certain amount. Gap.

The oil-free screw compressor adopts water-lubricated compression technology, and no lubricating oil is needed in the compression process. Therefore, this compressor is indeed "oil-free", which not only reduces maintenance costs, but also improves the quality of compressed air.