By . Air Compressor. At Sunday, September 16th 2018, 05:29:17 AM.
I looked over my options and soon settled on a 20 gallon portable air compressor that would not only adequately run this particular tool, but would also serve my needs going forward. You never know what use you might find for such a great machine. Being able to power up and use tools with pressurized air is clean, efficient, powerful, and fun.
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.
An important factor is also the factor of oil. The oil is used for lubrication of moving parts of the compressor, but it also has some side effects. For example, traces of oil can be found in the tubes that deliver air to your airbrush tool, so it can be mixed with paint. This problem is more pronounced if the compressor is older. One possible solution is to purchase an oil free air compressor.