Thanks, but that is much too broad. I found CR4 by Google, but need more specifics. I can use your site to search for specifics like power rating, gearing weight etc, but I need to see whether a particular type of engine construction is in existance. I do not know ALL of the types of air motor construction, therefore I can't search for them.
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By definition and device that can change air pressure into work can be considered a motor. So A diaphragm, piston, turbine, vane are all parts of devices that air pressure can be applied to the do work.
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Take a look at this page from an Ebook on the Hydarulics & Pneumatics Magazine web site an scroll down to Air Motors for two common types. This is a book I use for a Basic Fluid Power class for mechanics and engineers.
I don't want to answer the question posed, but from a compressed air class taken by one of my engineers, be advised that air motors (using compressed air) typically to do work in rotary motion is very energy inefficiency when compared to the use of electric motors, if suitable electrical devices are available.
Our air motor is used only in emergency (during a power failure). We have a couple of equipment that need to be emptied in case a power outage occurs. The only way to turn the motor is to couple an air motor that automatically engages when the power cuts out.
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