CALT 21m³/min Flow, 13bar Pressure, All-terrain Move, 24h Stable Running Diesel Portable Compressor
Optimize subsurface and infrastructure workflows with AIRERA’s precision-engineered mobile pressure solution. Delivering a consistent 21m³/min volumetric flow optimized for 13bar high-pressure impact, this diesel-driven system guarantees maximum pneumatic tool velocity without line degradation. Its engineered all-terrain chassis architecture provides exceptional mechanical stability in remote regions, while the high-capacity fluid management system yields 24/7 uninterrupted running stability—the definitive standard in asset lifecycle and operational continuity.
- Diesel engine
In the intake system, exhaust gas turbocharging is adopted to improve the power performance.Meet the Euro II emission standards, high-performance oil pump, low fuel consumption.The overall structure is compact and the appearance is beautiful and generous.Covering the whole country's after-sales service network, users can get rapid and complete service.

- Shock absorption system
Vibration reduction of main engine: shock absorber.Axle damping: damping rod.Double vibration reduction makes the machine run more smoothly.
- Air end
The rotor is made of German processing equipment-to ensure the dimensional accuracy of parts.The bearing adopts the world brand SKF--- prolong the service life.High-load-resistant design-working pressure can reach 1.6Mpa.
| ITEM | UNIT | MODEL CALT-21/13K |
|---|---|---|
| Air capacity | m³/min | 21 |
| Working pressure | MPa | 1.3 |
| Weight | kg | 4200 |
| L×W×H | mm |
3764×1800×2213 |
| Type No.× Qty | 7.50-16×4 | |
| Diesel engine | ||
| Model | QSL8.3-C260-30 | |
| Type | Vertical, in-line, water-cooled | |
| Sunction | Turbo charger | |
| Dia. of cylinder×Journey×amount | 114×145×6 | |
| Displacement L | 8.3 | |
| Rated speed | r/min | 1800 |
| Idle speed | r/min | 1400 |
| Rated Power | kW(HP) | 194(260) |
| Engine lubricant capacity | L | 21.9 |
| Diesel capacity | L | 360 |
| Battery | V | 24 |
| Compressor | ||
| Pressure stage | 2 | |
| Compressor oil capacity | L | 78 |
| Amount size×Qty |
G2×1,G3/4×1 |
|
| Notice | CA: Screw compressor, LT:Portable ,All the models could be customized into skid-mounted type. |

Our all-terrain chassis architecture is engineered via rigorous Finite Element Analysis (FEA) to simulate and neutralize torsional strains. Built with a high-resistance box steel framework, it deflects the multi-directional stresses induced by extreme cross-country towing. Furthermore, heavy-duty off-road tires paired with a premium independent suspension isolate the internal twin-screw air end and engine alignment from violent impact shocks, preserving overall asset structural integrity.
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