Compressors and Gear Lubrication

Gearing in connection with compressors, whether for air, gas or refrigeration, is almost entirely confined to auxiliary functions. Some  air  conditioning units  have  gear  pumps to provide  forced  feed  lubrication  for  the  equipment. Also, some portable air compressors have gear driven rotary oil pumps. In either case lubrication of the gears may be by the crank case oil.