Montabert

In view of complex assembly of hydraulic rock drills that their cause of troubles and damage are numerous. The text as based on multi home made hydraulic rock drills in operation is going to introduce mainly the rotation types, impact types, water circulating types, air circulating types

Based on data on Internet and promoting materials from Montabert, the paper studies the structures and technical characteristics of hydraulic drifters from Montabert. It highlights the technical characteristics of the blank firing and brake structure, composite piston, shape of the progressive