EST cutter can meet all kinds of geological conditions. Roller Cutters are suitable for all kinds of raise boring and reverse circulation drilling,and can be applied to many types of cutter head.According to different geological feature,we design cutting structure.

According to the characteristics of rock mechanics,we use the method of calculation and analysis to ensure the highest cutting efficiency and the direction of movement of each row of teeth to make the maximum of the broken area when each tooth touch the hole wall.We depend on the actual operating conditions to choose alloy tooth shape,size and grade to adapt to the 200 Mpa to 30Mpa of the type of rock drilling.