On average:
Handheld pneumatic rock drills (e.g., jackhammers): These machines typically drill at a speed of around 0.2 to 1 meter per minute depending on the hardness of the rock.
Hydraulic or pneumatic crawler drills (commonly used in mining or construction): These are more powerful and can achieve drilling speeds ranging from 1 to 5 meters per minute in soft to medium rock. In hard rock, the speed may be closer to 0.5 to 2 meters per minute.
Rotary or percussive drilling rigs (used in mining and deep drilling projects): These larger machines can achieve rates between 1 and 10 meters per minute, depending on conditions.
Ultimately, the drilling speed depends significantly on the specific machine, the rock's properties, and the site conditions.
