CM458 Crawler Mounted DTH Drilling Rig 105-305mm Hole 200m Depth 5400Nm Torque 3.5MPa High Pressure

This CM458 crawler mounted DTH drilling rig is a high-torque, high-pressure drilling platform capable of holes from 105 mm up to 305 mm in diameter and depths reaching 200 meters. The 5400 Nm rotation torque and 3.5 MPa working pressure rating set the CM458 apart from standard blasthole rigs, making it equally effective for large-diameter water wells, deep geothermal holes, and heavy-duty blasting applications. Despite this capability, the machine weighs only 6200 kg, so it remains transportable and maneuverable on site. Power comes from a Yuchai 70 kW or Cummins 74 kW diesel engine, with an optional 45 kW electric motor for operations with grid power available.

• 105-305mm Hole Range: from production blastholes to large-diameter water wells and geothermal bores.
• 200m Drilling Depth: deep drilling capability rarely found in a 6-ton class crawler rig.
• 5400Nm Rotation Torque: exceptional rotary power for large hammers and difficult formations.
• 3.5MPa High Pressure Rating: matches high-pressure DTH hammer systems for fast penetration.
• Light 6200kg Design: easy transport and low mobilization cost for contractors.
• Dual Power Options: diesel or electric drive to suit site conditions and energy costs.

The CM458 serves two very different markets with one machine. In quarrying and mining, it drills large-diameter blastholes and pre-split holes that improve wall stability and reduce overbreak. In the water and energy sectors, it drills community water wells, irrigation bores, and geothermal exchange holes to depths that smaller rigs cannot reach. The high-pressure rating also supports efficient drilling with modern high-pressure DTH hammers, which are increasingly common in hard rock regions. For drilling contractors looking to diversify their services, the CM458 is a single investment that covers blasting, water, and foundation markets.

Factory testing includes a full torque and pressure verification, a trial drilling run, and a tramming test before the machine is prepared for export. The rig ships in a 40ft flat rack container or by RORO vessel with the mast and hydraulic systems fully protected. Documentation includes CE certification, engine compliance papers, operation and maintenance manuals, and a recommended spares list for the first year of operation. Our after-sales team provides remote commissioning support and technical advice on hammer and compressor matching for your specific application.