Gundrilling Gundrilling is the process of drilling long or deep holes, first used in the making of gun barrels more than 100 years ago. What is considered a deep hole? In general any hole more than 4 to 5 times its Diameter is considered a deep hole. Gundrilling is an efficient process to drill holes in materials such as steel, titanium, copper, cast iron, aluminum and plastics with precision. The gundrilling process is highly efficient for: drilling deep or short holes tight diameter tolerances surface finish quality and minimum run-out The gun drilling process eliminates the need to ream or hone the drilled bores and does so with extremely high repeatability. Another characteristic of gun drilling is that it provides virtually burr free bore intersections, entries and exits. A gundrilling system consists of the gundrill, workpiece fixture, drill spindle, coolant filtering, coolant supply, coolant type, and tool support and drill parameters. Liberty Machinery Company buys and sells used gundrilling machinery and has in stock several units from Eldorado, DeHoff, Mollart, Miroku, Phillips, TechniDrill, Unisig Liberty Machinery Company stocks gundrills as category D4554, D4402, D4904 Used Gundrilling Machines in stock: Eldorado, DeHoff, Mollart, Miroku, Phillips, TechniDrill, Unisig See our Used Gundrilling Machines For Sale Back