ictionalpressureandpowerlosses.Also,sincehydraulicsystemsuseafluidforeigntotheatmosphere,theyrequirespecialreservoirsandno-leaksystemdesigns.Pneumaticsystemsuseairwhichisexhausteddirectlybackintothesurroundingenvironment.Generallyspeaking,pneumaticsystemsarelessexpensivethanhydraulicsystems.However,pressibilityofair,itisimpossibletoobtainprecisecontrolledactuatorvelocitieswithpneumaticsystems.Also,precisepositioningcontrolisnotobtainable.pressordesignlimitations(lessthan250psi),hydraulicpressurescanbeashighas10,000psi.Thus,hydraulicscanbehigh-powersystems,whereaspneumaticsareconfinedtolow-powerapplications.Industrialapplicationsofpneumaticsystemsaregrowingatarapidpace.Typicalexamplesincludestamping,drilling,hoist,punching,clamping,assembling,riveting,materialshandling,ontrollingoperations.
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