Deep Hole Drilling Tools and Equipment

Deep hole drilling requires specialized tooling designed to deliver coolant and evacuate chips at extreme depths. Gun drills (brazed, solid carbide, indexable), BTA drill heads (brazed and indexable inserts), and ejector DTS systems each have distinct design requirements. Supporting equipment — high-pressure coolant systems, multi-stage filtration to 10–20 micron, guide bushings, hydraulic and shrink-fit tool holders — directly affects tool life, hole quality, and process reliability. Cutting tool materials continue to advance with nano-layer TiAlN/AlTiN coatings, recycled carbide substrates, and extended-depth solid carbide drills reaching 50×D.