Air Compressor
The AC125D is a diesel air compressor designed for high-pressure, high-capacity air applications such as deep water well drilling and geothermal drilling. With 36 m³/min displacement and 30 bar rated working pressure, it uses a two-stage compression structure to provide stable power support for down-the-hole drilling and other construction operations requiring a continuous high-pressure air source.
The unit is powered by a Cummins QSZ13-C550-30 engine with a rated power of 410 kW (550 hp) and water cooling. The 600 L fuel tank helps extend continuous operation time, making it suitable for outdoor drilling and engineering construction environments.
| Model | AC125D |
| Air displacement | 36 m³/min |
| Rated working pressure | 30 bar |
| Compression stages | Two-stage compression |
| Engine model | Cummins QSZ13-C550-30 |
| Engine power | 410 kW (550 hp) |
| Cooling method | Water-cooled |
| Fuel tank capacity | 600 L |
| Maintenance oil change volume | 120 L |
| Overall dimensions | 4220 × 2000 × 2300 mm |
| Overall weight | 5820 kg |
| Air outlets | G1-1/2 and G2-1/2 dual outlets |
| Noise level | 82 dB(A) |
| Applications | Deep water well drilling rigs, geothermal drilling |
The AC125D provides 36 m³/min air displacement, meeting the demand for continuous, high-flow compressed air in drilling operations. It is suitable for use with deep water well drilling rigs and geothermal drilling equipment.
With a rated working pressure of 30 bar, it provides a stable air source for deep-hole drilling, down-the-hole impact, and other operations requiring higher air pressure. During actual matching, the required air volume and pressure should be confirmed according to the drilling rig, impactor, hole diameter, and construction depth.
The unit uses two-stage compression, making it suitable for high-pressure output conditions and helping maintain stable air supply capability during continuous drilling operations.
Powered by a Cummins QSZ13-C550-30 engine rated at 410 kW (550 hp) and paired with a water cooling system, it meets the power requirements of outdoor drilling and long-duration continuous construction.
The AC125D is mainly used for deep water well drilling rigs, geothermal drilling, and similar projects. It can also serve as a supporting air source for drilling equipment requiring high-pressure, high-capacity compressed air. In actual use, the appropriate air compressor should be selected based on drilling depth, hole diameter, rock formation conditions, impactor specifications, and drilling rig configuration.
When selecting an air compressor, it is recommended to confirm the drilling rig model, drilling diameter, target depth, main formations, down-the-hole impactor specifications, and required working pressure and air displacement. For deep holes, large diameters, or hard rock construction, sufficient air volume and pressure margin should be reserved to ensure cuttings removal and impact efficiency.
Different geological conditions, drilling tool specifications, hole diameters, drilling depths, and operating methods can affect actual air demand and construction efficiency. The final selection should be based on on-site working conditions and the technical matching results of the drilling rig and impactor.
We are a professional drilling equipment manufacturer specializing in the research and development, production and supply of water well drilling rigs, core drilling rigs, reverse circulation drilling rigs, down-the-hole drilling rigs, truck-mounted drilling rigs and mineral exploration equipment.
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