V21 Large Mobile Diesel Air Compressor

The Atlas Copco V21 Sd T4F is a silenced, two-stage, oil-injected screw type air compressor, powered by a liquid- cooled, five-cylinder Scania diesel engine.

The unit hosts the new generation Screw element in its air end combined with a Scania made diesel engine model DC09, a cooling circuit, air/oil separation and control systems, mounted on support beams and supported by rubber buffers in a spillage-free frame.

An undercarriage with fixed towbar, brakes and pintle eye is available as option.

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 V21: Brochure / Datasheet / Engine Info Sheet

XC 4004 Smart Controller

Stop compressing air – start controlling it!

The Smart Air Xc4004 controller features the latest innovations. We believe a controller should put you in complete control, while being intuitive, and most importantly easy to use and navigate.

Smart controls also protect your investment: improve your efficiency while decreasing the operating costs of your equipment through advanced insights.

Advanced features:

  • Smart user interface with key parameters at first sight.
  • Mirror application for remote control.
  • Audible, clear warning system for any deviations.
  • Robust design which resists water and dust (IP67 rated).

No surprises:

Pressure gauge, running hours, fuel levels are always in plain sight, without toggling. Clear warning and alarm codes will clearly notify you in case of problems.

The controller will tell you when maintenance is due. If something goes wrong, alarms will notify you audibly and visually. And if something goes critically wrong, the controller will shut down the compressor and protect your investment.


Model   V21
Nominal flow at max working pressure cfm 758 - 725
Normal effective working pressure range psi 232 - 362
Flow in Dynamic flow boost cfm -
AirXpert 2.0 Yes Yes
XPR - 218 PSI
Fuel consumption at 100% g/h 13
Engine make   Scania DC09
Engine power HP 311
Emission compliance T4F T4F
DEF tank capacity US Gal 18.5
Dimensions trailer mounted (L x W x H) inches 157.5 x 82.7 x 86.6
Fuel tank capacity GAL 158.5
Weight (trailer mounted) lb 14400


Applications & Use Cases

Horizontal Directional Drilling (HDD)

Horizontal Directional Drilling (HDD)

HDD is a trenchless technology that use surface-launched equipment to drill underground horizontally and install pipes, conduits, and cables. This process can be air-driven and are used in numerous industries, such as utilities and telecommunications, at sites in dense, urban areas and/or where traditional vertical excavations are too dangerous (e.g., under bodies of water). 

Compressors in the DrillAir line can power large-diameter and/or long-run HDD processes with high throughput. The power of these units maximizes the efficiency of drilling operations, lowering project overhead and decreasing downtime. 

  • Can be employed to install underground utilities
  • Allows operators to drill horizontally controlling the direction of drill
  • The compressor powers the hammer at the end of the drill and uses air to clear dirt and debris

Blast Hole Drilling

Yellow machinery is drilling holes on the top of rocky sea cliff during blasthole drilling operations. Earthmoving, excavations, digging on the rocky soils.

The DrillAir range provides one of the highest air volumes at one of the highest air pressures available in the portable compressor industry. This also makes these new compressors one of the most energy efficient by having a very low specific fuel consumption for the air delivered.

Dynamic Flow Boost ® increases flow from 34.8 to 39m³/min (650l/s) when flushing and during drill stem refill. It means faster flushing, faster stem refill and a shorter time to finish a well.

High penetration rate with 35 bar pressure and 34.8m³/min (580l/s) flow means more meters drilled every day.


Mining Industry

The units were tested both in lab and field conditions to ensure optimal performance. It’s designed to withstand the toughest working conditions. The updated HardHat canopy is our toughest, most aesthetically pleasing canopy to date. It’s corrosion free and needs no painting or dent repair.

Whether in quarries or underground applications, we have a wide range of compressors with high flow and pressure ranges. Specially for underground applications: minimize ventilation costs by selecting one of our electric driven mobile compressors.;

  • Blasthole drilling
  • Quarrying
  • Rock excavation

Applications & Use Cases

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