CM358A Crawler Mounted Hydraulic DTH Drilling Rig

Product Features

The CM358A Crawler Mounted Hydraulic DTH Drilling Rig is designed for 90–165 mm blast hole drilling in open-pit mining, quarrying, hydropower construction and road projects. With a maximum drilling depth of 50 m and suitability for rock hardness from f=6 to f=20, it is a practical solution for contractors that need reliable drilling performance in medium-diameter rock drilling applications.

The rig uses a diesel engine or electric motor to power the hydraulic system for travelling, rotation, feeding, lifting and boom positioning. Compressed air is used for DTH hammer operation. This hydraulic and pneumatic working arrangement supports stable drilling performance while helping operators manage drilling, travelling and positioning from one machine.

CM358A crawler mounted hydraulic DTH drilling rig adopts diesel engine (or electric motor)  and hydraulic oil pump assembly to provide power, allowing rigs to finish moving, rotating, feeding and lifting, as well as angle positioning. 

During operation only the percussive DTH rigs consumes compressed air and in contrast to the conventional pneumatic rigs, CM358A saves about 40%~50% of total energy. 

CM358A is suitable for blast holes in rock formations where mobility, drilling depth, working angle and reliable torque are important.

Main Applications

CM358A is commonly used for:

• Open-pit mining blast hole drilling

• Quarry production drilling

• Aggregate and stone mining operations

• Hydropower project rock drilling

• Road cutting and road construction drilling

• Slope treatment and rock excavation projects

• Construction sites requiring medium-diameter DTH blast holes

For more models with different drilling capacities, visit Crawler Mounted Hydraulic DTH Drilling Rig.

Why Choose CM358A

Designed for 90–165 mm Blast Holes

CM358A covers a practical borehole diameter range of 90–165 mm, making it suitable for many quarry, mining and construction blasting operations. It can be configured according to the required hole diameter, rock condition and air compressor capacity.

Hydraulic Operation for Drilling and Travelling

The hydraulic system supports travelling, feeding, lifting, rotation and positioning functions. This helps improve working control in uneven quarry benches, open-pit mining areas and road construction sites.

Suitable for Hard Rock Drilling

With an applicable rock hardness range of f=6–20, CM358A is designed for drilling in a wide range of medium-hard to hard rock conditions. The 3000 Nm rotation torque and 0–80 rpm rotation speed support stable drilling performance during DTH drilling operations.

Crawler-Mounted Mobility

The crawler chassis helps the rig move between drilling positions on rugged ground. With a travel speed of up to 2 km/h and gradeability of up to 24°, CM358A is suitable for job sites where wheeled equipment may be less practical.

Flexible Power Options

CM358A can be supplied with different power configurations based on local operating conditions and service preferences:

• Yuchai diesel engine, 70 kW

• Cummins diesel engine, 74 kW

• Electric motor, 45 kW

The diesel version is suitable for mobile outdoor projects without a stable power supply. The electric motor version can be considered for fixed sites with available electricity and project requirements for lower on-site fuel consumption.

Recommended Air Compressor Matching

DTH drilling performance depends on proper air pressure and air flow. CM358A requires working air pressure from 1.2 to 2.4 MPa and air consumption from 11 to 21 m³/min.

When selecting an air compressor, the following factors should be considered:

• Required borehole diameter

• Rock hardness and drilling depth

• DTH hammer and drill bit size

• Site altitude and ambient temperature

• Continuous working hours per shift

• Whether the rig will operate with a dust collection system

JK Drilling can recommend a suitable compressor configuration based on your drilling conditions. Explore our Air Compressor solutions or send us your required hole diameter, drilling depth and site conditions for a complete recommendation.

Compatible Drilling Tools and Consumables

CM358A can be supplied as part of a complete DTH drilling package. A typical package may include the drilling rig, air compressor, drill rods, DTH hammer, drill bits and maintenance spare parts.

Available supporting products include:

• Drill Rod

• Percussive Hammer

• Drill Bit

• Dust Collector

• Other drilling spare parts and maintenance components

Dust Collection Options

Dust control is an important consideration for quarry, mining and road construction projects, especially where operators work near populated areas, production lines or regulated job sites.

CM358A can be equipped with:

Hydraulic Dry Dust Collector

A hydraulic dry dust collector is suitable for projects that require dry dust collection during drilling. It can help reduce airborne dust around the drilling area and improve the working environment for operators.

Wet Dust Collector

A wet dust collector can be selected for job sites where wet dust suppression is preferred. This option may be suitable for specific local environmental requirements or project operating conditions.

Please tell us your project location and dust-control requirements so we can recommend the most suitable option.

Service and Support

JK Drilling supports customers from initial equipment selection through operation and maintenance. Our team can assist with:

• Technical consultation before ordering

• Configuration recommendations for rig, compressor and drilling tools

• Equipment operating instructions

• Remote troubleshooting support

• Spare parts supply

• Maintenance guidance

• Overseas project communication and delivery coordination

Learn more about Services & Support or contact our team for a project-specific solution.

Frequently Asked Questions

What air compressor is required for CM358A?

CM358A requires working air pressure from 1.2 to 2.4 MPa and air consumption from 11 to 21 m³/min. The final compressor selection depends on hole diameter, drilling depth, DTH hammer size, rock hardness and site altitude.

Is CM358A suitable for quarry blasting?

Yes. CM358A is suitable for quarry blast hole drilling, open-pit mining, aggregate production and other medium-diameter rock drilling applications.

Can CM358A be used for water-well drilling?

CM358A is primarily designed for blast hole drilling. For deep water wells, mud drilling or more complex borehole conditions.

What dust collector options are available?

CM358A can be equipped with a hydraulic dry dust collector or a wet dust collector, depending on the project environment and dust-control requirements.

Can JK Drilling supply drill rods, hammers and drill bits together with the rig?

Yes. JK Drilling can provide drill rods, DTH hammers, drill bits, air compressors, dust collectors and spare parts as part of a complete drilling equipment package.

Contact us

To receive a suitable quotation and drilling package recommendation, please provide the following information:

• Required borehole diameter

• Required drilling depth

• Rock type and rock hardness

• Project application, such as quarrying, mining, hydropower or road construction

• Required air compressor brand or capacity

• Diesel engine or electric motor preference

• Dust collector requirement

• Destination country or port

• Required quantity and expected delivery time

This information helps us recommend the proper rig configuration, air compressor, drilling tools and spare parts package for your project.