If the needle reads 90 PSI when the throttle of the tool is closed but dips below that when the tool is engaged you need more pressure. To be certain that you are getting 90 PSI of pressure to the tool use an air regulator to gauge the dynamic air pressure while the tool is running wide open. Exceeding the manufacturer's recommended air pressure can damage components, shorten tool life, and create a potentially dangerous situation by compromising the integrity of the accessory in use. The reality is that both of these tools are designed to run optimally on the industry standard 90 PSI. The misconception is that a 2-1/2″ drive impact wrench requires more air pressure than a small right angle die grinder. The vast majority of air tools are designed to run on 90 pounds per square inch of pressure, commonly referred to as PSI. In this brief article, we will focus on the two most important factors in air tool performance: air pressure and flow. While in almost all cases, industrial production grade air tools are going to provide better performance than an automotive / maintenance style tool, there are some sure fire ways to ensure optimal performance regardless of the brand of tool selected.

This is almost always a loaded question and rather than engage them in the Ford versus Chevy debate, further questioning usually reveals dissatisfaction with the performance of one of their existing tools. On any given day, we receive calls from customers all over the country asking which is the best “brand” of air tool.

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