the piston air motor has a number of characteristics that make it ideal where an electric motor would not be a good choice. ningbo zhongyi hydraulic motor co., ltd has the experience in produce pg电子下载-pg电子游戏,hydraulic winch,gearbox,hydraulic steering unit,axial piston motor with quality assurance. zhongyiyepk so welcome to our to choose our product or call us. the air motor does not spark and therefore it can be used in potentially explosive atmospheres as found in petro-chemical installations, automotive workshops, mines and fume laden paint spray booths. they can be more compact with a smaller axial cross-section than the equivalent electric motor. they can be run at low speeds (by throttling the compressed air supply) and retain their high efficiency; typically 70%.
if one has been to the ubiquitous tyre shop or watched the slick formula teams changing tyres in double quick time on the tv , you will have seen the air hammer tools with their staccato hammering action, being used. the tools are driven by compressed air and at their heart are piston air motors. wikipedia defines the piston air motor (sometimes also known as an air drive, or compressed air engine) as a machine that is powered by compressed air and it converts reciprocating motion into rotary motion.
how they work is that compressed air is fed continuously into the top of a cylinder and this pushes down a spring-loaded piston until the top of the piston passes the exhaust port(s) and the cylinder then goes back up and the two-stroke cycle begins again. this is the hammering noise that you hear in the tyre workshop. for most applications, the piston air motor comprises between two and six cylinders to smooth out the power generated by overlapping the power pulses. the reciprocating action is converted to rotary motion in a similar fashion to a normal combustion engine. this type is called the radial type and it is the simplest type with the least moving parts. they are commercially available in sizes from fractions of a kilowatt to about 25 kw at 4,500 rpm
alternatively, the axial type arranges the cylinders around the shaft and the power is transmitted from the piston con rods using spur gears. this arrangement is often used where a low axial profile is required say as a hand-held drill. the efficiencies of the two types are similar but with the axial type requiring more maintenance on high torque-applications. they do also produce slightly less torque than the equivalent axial type.
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