Power System

Provides main power, typically via a diesel engine or electric motor.

Hydraulic System

Controls feed, rotation, lifting, etc., consisting of pumps, valves, cylinders, and piping.

Feed System

Pushes the drill string downward, often chain, rack-and-pinion, or cylinder-driven.

Rotation Unit

Provides torque to rotate the drill rods and drive the DTH hammer.

Drill Frame / Crawler Chassis

Supports the rig body and enables movement and positioning on site.

DTH Hammer

A pneumatic impact device that delivers direct percussive energy to the bit for breaking rock.

Air Compressor (external)

Supplies high-pressure air for operating the hammer and removing cuttings.

Control System

Human-machine interface for manual or remote control of the machine’s functions.

Suitable for Hard Rock

The percussive force acts directly on the drill bit, enabling efficient penetration of rock with hardness f ≥ 8.

High Drilling Efficiency

Combined rotary and percussive drilling is fast and effective, especially for deep holes.

Large Hole Diameter & Good Verticality

Ideal for straight, deep boreholes; typical diameters range from 90mm to 300mm.

High Level of Automation

Modern rigs often feature full hydraulic control, with optional remote or program-based operation.

Strong Cuttings Removal

High-pressure air efficiently removes rock cuttings, reducing the risk of sticking.

Stable Structure

Crawler-type design allows the rig to move effectively across uneven terrain.

High Dependence on Compressor

Requires a large-capacity air compressor, which increases fuel consumption and cost.

Unsuitable for Soft Soils

Inefficient and unstable in loose or soft formations; may cause collapse.

Noise and Dust Pollution

Air discharge produces high noise levels and dust, requiring environmental protection.

High Initial Investment

Both the rig and the compressor are costly.

Limited Angle Flexibility

Primarily used for vertical or low-angle holes; not ideal for inclined or side drilling.