Product Description:

A Gun Drill is a specialized type of drill designed for creating deep, accurate holes, originally created for drilling gun barrels — thus its name. It is widely utilized in industries such as automotive, aerospace, mold making, and medical devices.

Structure

• Single Cutting Edge: Simplifies chip removal and reduces vibration.
• Guide Pads: Help maintain straightness and improve surface finish.
• Internal Coolant Channel: High-pressure coolant flows through the tool to cool and remove chips.
• Long, Thin Drill Tube: Ideal for deep holes — up to 100 times the diameter or more.

Advantages

• Excellent for deep hole drilling
• Produces high-precision holes with smooth surfaces
• Efficient chip evacuation with internal coolant
• Commonly used for gun barrels, engine parts, molds, and surgical tools

Features:

Excellent Deep Hole Capability

• Can drill holes over 100× diameter (D)
• Ideal for deep, narrow, and precision bores

High Hole Accuracy

• Superior straightness, roundness, and coaxiality
• Typically achieves IT8–IT10 tolerance levels

Smooth Surface Finish

• Surface roughness can reach Ra 0.4–1.6 µm, reducing the need for reaming or honing

Efficient Chip Removal

• Internal high-pressure coolant flushes chips out smoothly
• Prevents clogging and overheating

Stable and Low Vibration Drilling

• Guide pads stabilize the tool and reduce tool deflection
• Suitable for long and precise holes

Long Tool Life (with proper use)

• With correct speeds, feeds, and coolant, gun drills maintain sharpness over long runs
• Carbide-tipped or solid carbide options available

Applicable to Various Materials

• Effective on steel, aluminum, copper, titanium, plastic, and other metals or composites

Automation-Friendly

• Can be used in CNC machines, gun drilling machines, or modified lathes

Technical Parameters:

Applications:

Applications of Gun Drills
Gun drills are used wherever deep, straight, and accurate holes are required. Common industries and examples include:

1. Firearms Industry
   • Gun barrels: The original use of gun drills
   • Requires extremely straight, high-precision bores
2. Automotive Industry
   • Engine components: Crankshafts, camshafts, connecting rods
   • Fuel system parts: Injectors, valve bodies, oil passages
   • Transmission and hydraulic systems: Precision deep bores
3. Aerospace Industry
   • Hydraulic manifolds
   • Landing gear parts
   • Structural components requiring lightweight deep bores
4. Mold and Die Making
   • Cooling channels in injection molds or die-casting tools
   • Accurate and efficient heat dissipation paths
5. Medical Devices
   • Bone drills, cannulas, needle tubes
   • Precision small-diameter, high-quality holes
6. Hydraulics & Pneumatics
   • Valve bodies, cylinders, pressure blocks
   • Require precise axial bores for fluid control
7. General Manufacturing
   • Any component that needs a deep, accurate, and clean hole in metal, plastic, or composite materials