Gallons refer to the storage capacity of an air compressor’s tank. During its off-cycle, the compressor is not necessarily turned off but isn’t actively pressurizing any volume of air. Duty cycles are often specified as percentages, meaning that if a compressor has a duty cycle of 60/40, the compressor works for 60% of the time and is idled for the remaining 40%. Duty CycleĪir compressors perform rigorous amounts of work, so for efficient usage, they operate on an on/off cycle, also called a duty cycle. Depending on your application and for the optimum results, you can choose an air compressor rated sufficiently higher than your current CFM. It describes the working capacity of the machine and is one of the most recognizable properties to look out for before completing a purchase. Horsepower measures the motor efficiency of an air compressor at a given CFM and PSI. Factory tools having PSI ratings from 40-90 may be enough to carry out most of these processes. Applications such as cutting, sealing, painting, sanding, and pounding require high PSI. Since pressure is inversely proportional to area, it increases as area decreases and vice versa. PSI (Pounds Per Square Inch) indicates the amount of pressure forced through a compressor per square inch of area. Once you understand how to convert units into SCFM, you can easily convert SCFM to psi and vice versa.Īdditional Air Compressor Ratings to ConsiderĪfter identifying the SCFM or CFM values, there are some other essential ratings to consider when choosing an air compressor, such as: PSI Knowledge of SCFM is quite useful when working with air compressors.
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