Chicago Pneumatic CPS 185 KDU Utility Mounted Compressor

The Chicago Pneumatic CPS 185 KDU s a single-stage oil-injected rotary screw type air compressor, powered by a liquid-cooled, four-cylinder diesel engine. The unit consists of an air end, diesel engine, cooling circuit, air/oil separation, and control systems.



Model CPS 185 KDU
Minimum effective receiver pressure Psi(g) 58
Maximum effective receiver pressure Psi(g) 125
Normal effective working pressure Psi(g) 100
Actual Free Air Delivery cfm 185
Max Sound Pressure Level@ 23′ (7m) at normal working speed & pressure dB(A) 76
Compression Stages 1
Air Receiver Capacity Gal/Hr (L/Hr) 4.5 (17)
Compressor Oil Capacity Gal/Hr (L/Hr) 2.25 (8.55)
Approximate Air Outlet Temperature °F (°C) 200 (93)
Air Compressor Outlets 2 x ¾” NPT
Max. Ambient Temperature (at sea levels) °F (°C) 125 (51)
Minimum starting temperature (without cold weather options) °F (°C) 14 (-10)
Minimum starting temperature (with cold weather options) °F (°C) -13 (-25)
Engine  Kobuta V2403-CR-EF02
Emissions Regulation US EPA Tier 4 Final
US EPA Engine Family HBXL02.4END
Number of Cylinders 4
Output at rated speed (2700 rpm) HP 49
Aspiration Naturally aspirated
Displacement cu in (L) 147 (2.4)
Engine Speed (Unlocked) rpm 1600
Engine Speed (Maximum Loaded) rpm 2700
Engine Oil Capacity US Gal (L) 2.75 (10.5)
Engine Coolant Capacity US Gal (L) 2.5 (9.5)
Fuel Tank Capacity US Gal (L) 25 (94)
Fuel consumption at 0% load Gal/Hr (L/Hr) 1.94 (3.55)
Fuel consumption at 100% load Gal/Hr (L/Hr) 2.3 (8.3)
Electrical System (Negative Ground) V 12
Battery Capacity (Cold Cracnking Amps) A 1100