Causes of bearing damage in rotary screw compressorsWaterThe most common and most damaging contaminant in rotary screw compressors and rotary screw vacuum pumps is water. The primary source of water contamination in rotary screw compressors is the inlet air. Ambient humidity and the compressors operating conditions affect water formation in the lubricant circuit. A major bearing manufacturer has stated, “It is well known that free water in lubricating oil decreases the life of rolling element bearings by ten to more than one hundred times…
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