Gun Drill

A gun drill is a single-flute, internal coolant drilling tool used to drill deep, straight holes with high precision and surface finish. It delivers coolant through the drill body to the cutting edge and evacuates chips through a V-shaped groove or flute. Commonly used in the automotive, aerospace, mold-making, and firearms industries.

A gun drill is a specialized deep hole drilling tool engineered to produce straight, accurate, and high-quality holes with exceptional depth-to-diameter ratios, often exceeding 20:1. Originally developed for drilling gun barrels, this tool features a single-flute design with a precision ground cutting edge and an internal coolant channel. The high-pressure coolant is delivered directly to the cutting zone, efficiently flushing chips away through the V-shaped flute while maintaining low temperatures and reducing tool wear.

Gun drills are widely used in industries requiring high-precision deep hole drilling, such as automotive, aerospace, die and mold, medical equipment, and hydraulic systems. They are capable of producing holes with excellent surface finish, tight tolerances, and minimal runout. Available in various sizes and lengths, gun drills are suitable for drilling metals, alloys, plastics, and composites.