The Atlas Copco XAS 185 KDU T4F is a single-stage oil-injected rotary screw type air compressor, powered by a liquid- cooled, four cylinder diesel engine.

XAS 185 Tile

The unit consists of an air end, diesel engine, cooling circuit, air/oil separation and control systems - all enclosed with an 1000 hour salt spray tested zinc rich primer steel canopy enclosure.

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

Special attention has been given to the overall product quality, user friendliness, ease of serviceability, and economical operation to ensure best in class cost of ownership.

View and/or Download XAS 185 KDU: Brochure / Datasheet


Actual free air delivery (FAD)  Cfm  185
Normal effective working pressure  Psi  100
Maximum unloading pressure Psi  125 
Minimum working pressure Psi  58 
Max. sound pressure level @ 23’ (7m) at normal working speed & pressure dB(a) 76
Compression Stages   1
Air receiver capacity US Gal (L) 4.5 (17)
Compressor oil capacity US Gal (L) 2.3 (8.7)
Approximate air outlet temperature °F (°C) 200 (93)
 Air Compressor outlets    1 x 11⁄4” NPT
Max. ambient temperature (at sea level) °F (°C) 120 (50)
Max altitude  ft(m) TBA 
Minimum starting temperature (without cold weather options) °F (°C) 14 (-10)
Minimum starting temperature (with cold weather options) °F (°C) -13 (-25)
Engine  Kubota V2403-CR-E4B
Emissions Regulation US EPA Tier 4 Final
US EPA Engine Family    EKBXL02.4END
Output at rated speed (2700 rpm) HP 49
Number of cylinders   
Aspiration   Naturally aspirated 
Displacement cu in (L) 147 (2.4) 
Engine Speed (Unloaded)  rpm  1600 
Engine Speed (Maximum loaded)  rpm  2700
Engine oil capacity  US Gal (L) 2.5 (9.5)
Engine coolant capacity US Gal (L) 2.5 (9.5) 
Fuel tank capacity  US Gal (L) 25 (95) 
Fuel consumption at 0% load  Gal/Hr (L/Hr)

0.93 (3.52)

Fuel consumption at 100% load Gal/Hr (L/Hr) 2.37 (8.97) 
Electrical System (Negative Ground)  V 12 
Battery Capacity (Cold Cranking Amps) A 1100

Applications & Use Cases

General Construction

Construction site with QAS 40 and XAS 97

A compressor like this can be utilized both for larger remodel installations as well as smaller home framing projects. The XAS 185 KDU is the ideal compressor if you want a lot of power from a unit that requires very little maintenance.

Onsite Repairs

 XAS56, repair work

Using the XAS 185 KDU Compressor, power up any tool with maximum torque, including impact wrenches, nailers, grinders, and more. Onsite repairs can be addressed in no time with practically any air tool in your kit.

Mobile Tire Repair

Closeup Of Mechanic At Repair Service Station Checking Tyre Pressure With Gauge

Construction sites are especially susceptible to flat tires since loose screws and nails damage tires and puncture them. Fixing a flat tire quickly is easy with our air compressor.

Sand Blasting

Atlas Copco Portable Energy - Sand blasting

With Atlas Copco's XAS 185 KDU Compressor connected to a sand blaster, most surfaces can be cleaned quickly and efficiently of paint, rust, and oxidation residues. Ensure surfaces are ready for construction, painting, or maintenance.

Applications & Use Cases

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