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All Categories > Air Compressors > Rotary Screw Compressors > Portable Rotary Screw Compressors > Portable Tow-Behind Rotary Screw Diesel Air Compressors > Chicago Pneumatics Tow-Behind > Item # CPS 185 PDU7  
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Item # CPS 185 PDU7, CPS 185 PDU7 Compressors

Chicago Pneumatic at your service

Since 1901 the Chicago Pneumatic name has represented high-performance tools and equipment designed for an extensive range of applications. Today, Chicago Pneumatic has a global reach, with local customer centers around the world. Chicago Pneumatic tools, air compressors and generators are tailored to the needs of the industrial, vehicle service, and construction markets. Every day we develop and manufacture new products that are meant to meet your demands not only today, but tomorrow as well.

Specifications  · General Description  · Features  · Note


Model Compressor

CPS 185 PDU7

Actual Free Air Delivery1

185 cfm

Normal Working Pressure

100 psi

Maximum Unloading Pressure

125 psi

Compression Stages


Compressor Cooling System


Air Receiver Capacity

4.5 gal



Model Number

404D-22 (Interim Tier 4)

Cooling System



49 bhp



Number of Cylinders


Overall Length

84 in

Overall Width

34 in

Overall Height

57.0 in

Weight Wet

1850 lb

Weight Dry

2060 lb
1 According to ISO1217 ed.3 1998 annex D

General Description
Chicago Pneumatic carefully monitors the maintenance needs of all its compressors. Service intervals are carefully assessed to ensure optimum performance is maintained and operating costs reduced. Service kits are available to ensure a compressor is able to retain its optimum capacity throughout its life.

Chicago Pneumatic makes no compromise on the quality of replacement parts; only genuine parts will provide the longevity and reliability you demand. Selected high quality Chicago Pneumatic compressor and engine oils are also available. These meet the stringent quality specifications required to enable your unit run smoothly, shift after shift. Oils are available in 2, 20 and 209 liter containers.

For complete peace of mind, Chicago Pneumatic can also offer a choice of service contracts

The CPS 185 PDU portable air compressor from Chicago Pneumatic is designed for cross mounting on service vehicles and features two sets of forklift slots, one on each end, as well as a lifting bail.

  • Galvanneal enclosure to prevent rust
  • Central point drains for quick serviceability
  • Curbside control panel for ease of use
  • Protective shutdown system to prevent damage

Subject to change without prior notice.

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