PA55 Joy Air Motor (Reconditioned)


  • Variable speed high-torque power particularly important when starting against load
  • Excellent low speed lugging power
  • Instantly reversible or non reversible response
  • Safety in explosive environment (no expensive explosion proof electrical switches or motors).
  • Long life in abrasive, corrosive moisture laden or hot environments (no shorting or electrical hazard problems).
  • Control options – select to fit your application
  • Proven 5 cylinder radial design


  • pump drives
  • welding machines
  • air tram power for drill mobiles
  • air slusher hoists
  • air utility hoists

Features Available:

  • Foot Mounted Configuration
  • Self Centering Control Valve (standard)
  • 4 Way Remote Control Valve (optional extra)

Additional Equipment Available:

  • Air Line Oiler (Lubricator)
  • 4 Way Control Valve

Simple Design – Quality Construction

Five cylinder radial action and a precisely counterbalanced crankshaft assure smooth operation at all speeds, at least two pistons always on a power stroke. The functional design simplicity of the PA55 motor is enhanced by rigid quality control in material and manufacturing. An effective well sealed lubrication system minimizes wear.

Foot Mounted Horizontal Installations

The Pistonair PA55 also comes as a direct drive foot mounted motor. It can be placed on floor, wall or ceiling – in any attitude not exceeding 15º relative to the horizontal position of the drive shaft. An effective oil lubrication system assures adequate lubrication of all bearings, both the inboard and outboard drive shaft ball bearings.

ITEM Specifications
Cylinder Bore 5 1/2″
Cylinder Stroke 3″
Rated Speed 700 Revolutions per Minute
Air Consumption 18 CFM/HP (Max)
Rated Horsepower 25 Horsepower
Recommended Air Pressure Minimum 80 Pounds per Square Inch.
Stall Torque 315 Foot Pounds
Weight 325 lbs.