CALT 39m³/min Flow, 25bar Pressure, All-terrain Move, 24h Stable Running Diesel Portable Compressor
Dominate large-diameter drilling and blasting with the AIRERA CALT series. This all-terrain powerhouse delivers an industry-leading 39 m³/min massive flow at a stable 25bar pressure, ensuring rapid cutting removal and unmatched penetration rates. Engineered with a heavy-duty chassis and advanced cooling, it guarantees 24-hour non-stop running under scorching heat or heavy dust. Choose AIRERA to maximize your daily borehole footage.
- 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.

- Air filtration system
Three-stage air filtration, including cyclone, coarse filtration and safe filtration, is especially suitable for harsh environments such as dusty fields.99.99% of the particles above 3μ were removed.The filter element has large surface area, imported filter paper, long service life and small pressure drop. Located in the cold room area, optimize the performance of the unit.Enlarged 20% air filtering system for better performance.
- 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 39K-25K |
|---|---|---|
| Air capacity | m³/min | 39 |
| Working pressure | MPa | 2.5 |
| Weight | kg | 7300 |
| L×W×H | mm |
4573×2160×2661 |
| Type No.× Qty | 8.25-16×4 | |
| Diesel engine | ||
| Model | KTA19-P700 | |
| Type | Vertical, in-line, water-cooled | |
| Sunction | Turbo charger | |
| Dia. of cylinder×Journey×amount | 159×159×6 | |
| Displacement L | 19 | |
| Rated speed | r/min | 1800 |
| Idle speed | r/min | 1300 |
| Rated Power | kW(HP) | 595(700) |
| Engine lubricant capacity | L | 38 |
| Diesel capacity | L | 755 |
| Battery | V | 24 |
| Compressor | ||
| Pressure stage | 2 | |
| Compressor oil capacity | L | 120 |
| Amount size×Qty |
G2×1,G3/4×1 |
|
| Notice | CA: Screw compressor, LT:Portable ,All the models could be customized into skid-mounted type. |

Delivering 39 cubic meters of air every single minute creates tremendous continuous load. To achieve 24-hour stable running, AIRERA utilizes an optimized, oversized screw air end featuring a precise 5:6 rotor profile. This design maximizes air displacement per revolution while operating at a conservative, low RPM. It significantly lowers internal friction, bearing temperatures, and energy loss, ensuring the machine stays cool and efficient under non-stop heavy-duty operation.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.

