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Drilling progress
Performance rating for the drilling of holes in different materials. The drilling progress depends on a number of factors, among them motor power, operator pressure and type and shape of the accessories. The drilling progress in masonry depends on the percussive force per stroke and the structural stability of the stonework.
| Drlling progress (mm/min or m/h) | Â | Drilling depth |
| = | ---------------- | |
| Â | unit of time |
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