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CPS 185 KDU T4F Mobile Air Compressor

Model: CPS 185 KDU


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Horsepower: 49hp
PSI: 125 (Pressure)
Outlet CFM Max: 185 (Flow)
Sound (dBA):76
Max PSI: 125
RPM: 2700
Volts: 12
Fuel: Diesel

Dimensions & Weight

Tank Size: 25 Gallons
(A) Length: 83"
(B) Width: 34"
(C) Height: 55"
Weight: 2115 lbs


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.

It is in a Utility Mounted enclosure designed for mounting on truck decks, factory, and locally installed options are available.

Compressor Element

The quality of a compressor can be measured through the reliability, efficiency and durability of the compressor element used. Through decades of expertise in the design of compressor elements, the result is the production of most efficient and reliable compressors in the market. When the screw element is efficient durability excels, maintenance intervals decrease and fuel consumption goes down.

The CPS 185 KDU T4F compressor utilizes Chicago Pneumatics’ C111 which element is directly driven from the diesel engine with a fiber disc coupler. No gear box means less horse power required to produce the same volume of compressed air.

Inlet air is filtered through a heavy duty two stage air filter.

Air/Oil Separator

Air and oil separation is achieved through a centrifugal oil separator combined with a filter element. Separators are ASME/CRN approved versions and are stamped accordingly.

Designed for a higher maximum working pressure, the separator is equipped with a sealed high pressure safety relief valve, sonic nozzle, automatic blow-down valve, and pressure regulator.

Cooling System

The cooling system consists of integrated side-by-side aluminum oil cooler with axial fan to ensure optimum cooling. The fan is protected by a guard for operator safety. There is an access port at the front of the machine for easy cleaning.

The cooling system is suitably designed for continuous operation in ambient conditions up to 125°F, with canopy door closed.


Kubota V2403 Tier 4 Final, naturally aspirated, four-cylinder, liquid-cooled diesel engine provides ample power to operate the compressor continuously at full-load.

Engine output at rated speed, in accordance to SAE Standard, is 49hp at 2700 rpm, as limited by the engine ECU.

The engine has the capability to start the compressor to 14°F (-10°C) with standard glow-plug aid. Cold start options are available for up to (TBA).

The 25 Gal (94L) fuel tank is sufficiently sized to operate the unit for minimum of 8 hours at full-load condition.


The instrument control panel is located on the back, of the compressor canopy with easy access.

Standard instrument package includes an operating pressure gauge, and fully diagnostic ECU controller with large 3.5” display. The intuitive Chicago Pneumatic XC2003 controller is easy to operate with all functions conveniently at your fingertips. The controller also manages the engine ECU operating system, and a number of safety warnings and shut downs on various parameters

Additional information

Weight 2115 lbs
Dimensions 83 × 34 × 55 in


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12 Month Standard Manufacturers Warranty*

*Exclusions may apply.

-- Extended warranty may be available, consult documentation for details. --

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