| Machine Type | Rock drill configuration | Pneumatic rotary-percussive drill with air leg | Compressed air powers both the reciprocating impact mechanism and the rotation mechanism, while the air leg supports and advances the drill. |
| Power Source | Recommended working air pressure | Approximately 0.63 MPa | Stable compressed-air pressure is required to maintain the specified impact energy, rotation, and feed performance. |
| Impact System | Piston stroke | Approximately 70 mm | The internal piston repeatedly moves through this stroke to transfer impact energy to the drill rod and bit. |
| Impact System | Impact frequency | Approximately 35 Hz or higher | A high impact frequency helps fracture hard and medium-hard rock at the bottom of the borehole. |
| Rotation System | Rotation speed | Approximately 200 rpm | The rotation mechanism turns the drill rod between impacts so the bit strikes fresh rock and maintains a round hole. |
| Drilling Capacity | Compatible drill-hole diameter | Approximately 34–42 mm | The actual diameter depends on the selected drill bit, rock formation, drilling method, and operating conditions. |
| Drilling Capacity | Recommended drilling depth | Up to approximately 5 m | Practical depth is affected by rod length, hole deviation, rock hardness, flushing efficiency, and available air pressure. |
| Air Consumption | Compressed-air consumption | Approximately 80 L/s | The air supply must provide sufficient flow through an adequately sized hose, filter, lubricator, and compressor system. |
| Air Leg | Feed and support function | Pneumatic telescopic support and feed | The air leg pushes the drill against the rock face, reduces operator effort, and allows the drilling angle to be adjusted. |
| Air Leg | Typical cylinder diameter | Approximately 80 mm | The cylinder converts compressed-air pressure into axial thrust for positioning and advancing the drill during operation. |
| Drill Body | Approximate machine weight | Approximately 42 kg, excluding accessories | Actual shipping and operating weight varies with the air leg, drill rods, couplings, hoses, and other attachments. |
| Working Cycle | Basic operating sequence | Impact → rotation → feed → flushing | The piston impacts the rod, the motor rotates the rod, the air leg feeds the bit forward, and compressed air helps remove drill cuttings. |
| Rock Removal | Hole flushing method | Compressed-air flushing through the drill assembly | Air carries dust and fragmented rock out of the hole, helping prevent bit jamming and improving drilling continuity. |
| Typical Applications | Suitable work environments | Mining, quarrying, tunneling, and construction | The portable pneumatic design is commonly used where compressed air is available and electric or hydraulic equipment is less suitable. |
| Operating Safety | Essential checks before use | Inspect hoses, couplings, lubrication, bit, rods, and air pressure | Use the operating manual and site safety procedures. Disconnect the air supply before maintenance or replacing drill components. |