The oil-free screw compressor element
No oil means that there is absolutely no oil for sealing the rotors and for cooling the compressed air flow, components and rotors. … The Oil-free Screw Air Compressor component can be cooled by cooling water that flows through unique pockets in the component casing.
In a lubricated screw compressor, the lubricant will come in direct in touch with the compressor inlet air and compressed air. … The oil contains anti-oxidants to try to reduce the break down of the lubrication properties because of internal conditions.