Dry Screw Compressor
Rotary screw compressors are available in oil-free or oil-flooded designs. In a dry-running rotary screw compressor, timing gears ensure that the male and female rotors do not contact one another. The term “oil-free” refers to a screw compressor operating without lubricating oil in the compression space. Rotor bearings still require a continuous supply of cool, clean oil.