D,  Rotary Compressor

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.

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