Deep Hole Drilling Applications

Deep hole drilling serves critical roles across major industries. Aerospace relies on gun drilling and BTA for landing gear struts, turbine shafts, and engine components in titanium, Inconel, and high-strength steel with IT6–IT8 tolerances. Automotive production uses high-volume gun drilling and BTA for fuel injectors, transmission shafts, and crankshafts. Oil and gas depends on BTA drilling for valve bodies, drill collars, and blowout preventers (BOP) in 4140, 4130, and Inconel with NACE MR0175 compliance. Medical device manufacturing requires small-diameter gun drilling (<2 mm) for bone screws and implants in 316L and Ti-6Al-4V ELI. Mold and die applications use deep hole drilling for conformal cooling channels. Power generation and heavy engineering demand large-diameter BTA drilling for turbine rotors and hydraulic cylinders.

Gun barrel manufacturing — the process that gave deep hole drilling its name — is covered step by step in the gun barrel drilling workflow.

Hydraulic cylinder deep holes — tube bores, piston rod center bores for LDT sensors, and oil galleries — are covered in the deep hole drilling hydraulic cylinders guide.

Gun-drilled conformal cooling channels — how straight drilled segments, plugs, and intersections approximate a cavity-following circuit — are covered in gun drilled conformal cooling.