
Tungsten carbide coolant feed drill has 1 or 2 through-hole or double spiral hole and uses compressed air and cutting fluid to cool tool and take chips away. It is particularly suitable for the deep-hole drilling with great cutting heat.Tungsten carbide coolant feed drill mainly consists of drill tip, chip groove, spiral groove, run-out groove, handle and cooling hole. Drill tip: In drilling process, it endures the most part of thrust and torque, which directly affects the quality and the…