Rock drilling head with rinsing channels suitable for both wet and dry drilling

摘要

A rock drilling heat 1 with a drilling diameter D between 25mm and 60mm has at least one rinsing channel 2 formed in the outer surface 3 of the drilling head and expanding from the outer surface 3 inward in the form of a nozzle, the rinsing channel having a diameter S amounting to between 1/20 and 1/5 of the drilling diameter D.