Deep holes are characterized by length to diameter ratios (L/D) of 10:1 or higher. In many applications, L/D ratios in excess of 200 are required. To satisfy these challenging needs, special provisions have to be incorporated in the solution for effective chip breaking, smooth chip evacuation, lubrication and oil cooling.
Gun Drilling, or deep hole drilling is a hole making machining process that generates holes that can be up to 200 times longer than the diameter of the hole. Applications in today’s industry demand deep hole drilling in exotic materials or hard super-alloys while maintaining accuracy and productivity. Maintaining straightness of holes with good tolerances and surface finish requires the proper machine.