Published at Tuesday, August 14th 2018, 18:20:09 PM by Lelia Goff. Air Compressor. Air output of a compressor is expressed in standard cubic feet per minute (SCFM) or just cubic feet per minute (CFM). Not all 5 HP compressors put out the same volume of air per minute. This is a function not only of motor horsepower but also the efficiency of the air compressor pump the motor is powering. The higher the CFM, the less your air compressor will have to cycle on and off to keep up with the demands you are putting on it. A small compressor pump on a huge tank will produce no more air than on a small tank. The only difference will be in the number of times the compressor cycles on an off each hour and the time it takes to recompress the tank on each cycle. In the final analysis, you need to pay attention to SCFM (or CFM) more than you do motor horsepower or tank size. Air flow is the end product of any compressor and the CFM must be sufficient to the job at hand.
Published at Monday, August 06th 2018, 05:37:35 AM by Isabella Smith. Air Compressor. The most common is the piston compressor. This falls under the positive displacement compressors, which you can find in fractional to very high horsepower ranges. The positive displacement air compressor works by filling an air chamber with air and reducing the chamber volume.