Chicago Pneumatic CPS 185-100 KoD Small Diesel Air Compressor

The Chicago Pneumatic CPS 185 – 100 is a single-stage oil-injected rotary screw type air compressor, powered by a liquid-cooled, three-cylinder diesel engine.

The unit consists of an air end, diesel engine, cooling circuit, air/oil separation and control systems – all enclosed within a Redrock™ polyethylene shell.

Unique features – 110% fluid containment, internal toolbox, external lifting eye, new easy to use controller XC1004.


Model CPS 185-100 KoD
Actual free air delivery (FAD) cfm 180
Normal effective working pressure Psi 100
Maximum unloading pressure Psi 125
Minimum working pressure Psi 72
Compression Stages 1
Air Reciever Capacity US Gal (L) 4.76 (18.0
Approximate air outlet temperature °F (°C) 200 (93)
Air Compressor outlets (X2) 3⁄4”
Max. ambient temperature (at sea level) °F (°C) 122 (50)
Maximum altitude ft (m) 9842 (3000)
Minimum starting temperature (without cold weather options), standard TBV °F (°C) 14 (-10)
Minimum starting temperature (with cold weather options) °F (°C) -13 (-25)
Engine Kohler KDI 1903 TCR
Emissions Regulation US EPA Tier 4 Final
US EPA Engine Family NKHXL02.5TCR
Output at rated speed (2700 rpm) HP 49
Number of cylinders 3
Aspiration Turbocharged
Displacement cu in (L) 114 (1.861)
Engine speed (Unloaded) rpm 1800
Engine speed (Maximum loaded) rpm 2500
Engine oil capacity US Gal (L) 2.35 (8.9)
Engine coolant capacity US Gal (L) 2.6 (9.9)
Fuel tank capacity US Gal (L) 22.3 (101.7)
Fuel consumption at 100% load Gal/Hr (L/Hr) 2.21 (8.37)
Fuel consumption at 75% load Gal/Hr (L/Hr) 2.18 (8.25)
Fuel consumption at 50% load Gal/Hr (L/Hr) 1.69 (6.40)
Fuel consumption at 25% load Gal/Hr (L/Hr) 1.69 (6.40)
Fuel consumption at 0% load Gal/Hr (L/Hr) 1.18 (4.47)
Electrical System (Negative Ground) V 12
Battery Capacity (Cold Cranking Amps) A 725