Pneumatic Type

The pneumatic type utilizes compressed air to drive a reciprocating piston inside the cylinder. The piston strikes the shank adapter and drill steel, transferring impact energy to break rock. This category remains the most widely‑used rock drill in mining and tunneling operations.

Electric Type

The electric type uses an electric motor and crank‑connecting‑rod mechanism to actuate the hammer head, which strikes the drill steel for rock chipping. It is equipped with a dust‑removal system to discharge rock cuttings.

Hydraulic Type

The hydraulic type is powered by high‑pressure hydraulic oil. Hydraulic pressure drives the impact body to generate impact blows onto the drill steel. Many models adopt nitrogen‑charged accumulators to stabilize pressure during cyclic impact.

During the return stroke of the impact mechanism, a rotation unit turns the drill steel by a small angle. This re‑positions the drill bit so that each blow acts on a new rock surface. Combined with flushing and dust‑removal functions, it efficiently forms blast holes.

As core engineering equipment, hydraulic rock drills are extensively deployed in mining, highway construction and general building projects. While hydraulic rock‑drilling technology keeps advancing, locally‑manufactured hydraulic rock drills still face some challenges, including relatively low overall efficiency, limited service life of certain key components, high operating vibration due to insufficient vibration‑damping structures, and imperfect energy‑transfer performance.

Internal Combustion Type

The internal‑combustion rock drill is powered by gasoline combustion inside its built‑in engine, generating explosive force to drive the impact piston and strike drill steel. It requires no external compressed‑air or power supply, making it ideal for remote job sites without utility sources.

This drill does not require frequent replacement of internal engine parts. Operators control working status simply via the control handle. It features easy operation, time‑saving workflows, fast penetration speed and high efficiency. It can drill vertically downward, horizontally, or upward at angles below 45°. Vertical‑down drilling depth can reach up to six meters. It performs reliably across diverse field conditions, adapting to high‑altitude mountain regions as well as flat ground, and tolerates extreme temperatures ranging from ‑40 °C to +40 °C.

Beyond rock drilling for mining, construction and road works including concrete and asphalt surfaces, it can also complete auxiliary tasks such as rock splitting, crushing, tamping and chiseling. It finds broad applications in mining, building construction, fire‑rescue operations, geological exploration, road construction, quarrying and national‑defense engineering projects.