The general mechanism of an air compressor is a piston or rotary element (e.g. rotary screw or vane) that draws in surroundings, which is compressed right into a storage tank. Naturally, since the piston or rotary component needs to move consistently and smoothly for this to function, it generally needs to be lubricated.
In a lubricated air compressor, there is lubricating oil which will keep the piston or rotary element running smoothly 
without damaging the mechanism. The lubricant also helps to dissipate temperature and keep maintaining air compression efficiency.
Water Lubricated Air Compressor oil-free of charge air compressors also use a piston or rotary element, however they bypass the lubrication problem by coating the compression component with a pre-lubricating material like Teflon. Some oil-free compressors may also use water in place of oil for the lubricating and cooling procedure. These alternate materials secure the pump and invite the mechanism to move smoothly without the need for any oil-based or synthetic lubrication.
