Abovedeck Piston




The Boss BA502's proven performance and reliability in the service and mechanic's truck industry offers several benefits over competitive brands:

At the heart of the system is a cast iron two stage, splash lubricated reciprocating air compressor. The compressor is direct coupled to a 13 GPM gear-type hydraulic driven motor, no need to replace and tension belts when time is of the essence!

Routine maintenance items are accessible without the removal of the canopy.

The aluminum enclosure not only reduces weight, but also is rust resistant.

Also, included standard with the Boss BA502 are an integrated hydraulic system cooler, integrated solenoid and relief valve, 12 VDC fan assembly, heavy-duty filtration and one-year warranty for the compressor assembly.


TypeTwo stage, 2-cylinder piston
Delivery50 cfm @ 175 psig @ 800 rpm
Power SourceHydraulic gear motor
BoreLow pressure: 6.1" / High pressure: 3.23"
Displacement62 cfm*
13 gpm
Hydraulic Pressure2200 psig (2400 psig max)
Ambient Air Temp.-20° to 100° F
Hydraulic SystemOpen center
Reservoir Requirement25 gal. min.
Oil Capacity3 qts
Electrical12VDC standard (24VDC optional)
Hydraulic System CoolerIncluded as standard (compressor hydraulic cooling only)
Dimensions34.75" x L 28.75" H x 20.5" W
Weight590 lbs. (wet)
Warranty1 year
30 gal. min.


* at 800 rpm


Quantity of one (1) Boss Model BA502 hydraulic drive abovedeck reciprocating air compressor to include the following as standard equipment:

  • Boss two stage, air cooled, 2-cylinder, splash lubricated reciprocating air compressor.
  • Capacity 50 CFM @ 175 @ 800 input RPM.
  • Direct coupled, gear-type hydraulic motor to compressor input shaft. No belt drive allowed.
  • Hydraulic requirements are 13 GPM @ 2,200 PSI (2,400 PSI maximum).
  • Compressor dry weight not to exceed 590 lbs.
  • Dimensions: 34.75" L x 28.75" H x 20.5" W
  • Integrated hydraulic system cooler to handle air compressor GPM flow.
  • 12VDC electric 14" fan assembly integrated into package for compressor head cooling and single pass hydraulic system cooler.
  • Enclosure to be durable, light weight, powder-coat painted and rust resistant aluminum. Galvanneal sheet metal not acceptable.
  • Routine maintenance items accessible without removal of canopy.
  • Integrated solenoid and relief valve incorporated into the compressor package.
  • One year warranty for the piston compressor assembly and 12-months on remaining components.