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:
Advantages of Gun Drills
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:
| **DC** | ***LF*** | **PL** | DCONMS | **BD** | **LS** | Insert |
| 14.00 | 261.00 | 1.95 | 25.00 | 13.50 | 56.0 | TOGT 07.. |
| 15.00 | 278.00 | 1.95 | 25.00 | 14.50 | 56.0 | TOGT 07.. |
| 16.00 | 209.00 | 2.20 | 25.00 | 15.50 | 56.0 | TOGT 08.. |
| 16.50 | 294.00 | 2.20 | 25.00 | 15.50 | 56.0 | TOGT 08.. |
| 17.00 | 220.00 | 2.20 | 25.00 | 16.20 | 56.0 | TOGT 08.. |
| 17.50 | 310.00 | 2.20 | 25.00 | 16.20 | 56.0 | TOGT 08.. |
| 18.00 | 232.00 | 2.20 | 25.00 | 16.20 | 56.0 | TOGT 08.. |
| 18.50 | 327.00 | 3.00 | 25.00 | 17.20 | 56.0 | TOGT 09.. |
| 19.00 | 243.00 | 3.00 | 25.00 | 18.20 | 56.0 | TOGT 09.. |
| 19.50 | 343.00 | 3.00 | 25.00 | 18.20 | 56.0 | TOGT 09.. |
| 20.00 | 255.00 | 3.00 | 32.00 | 19.00 | 60.0 | TOGT 09.. |
Applications:
Applications of Gun Drills
Gun drills are used wherever deep, straight, and accurate holes are required. Common industries and examples include:
- Firearms Industry
- Gun barrels: The original use of gun drills
- Requires extremely straight, high-precision bores
- Automotive Industry
- Engine components: Crankshafts, camshafts, connecting rods
- Fuel system parts: Injectors, valve bodies, oil passages
- Transmission and hydraulic systems: Precision deep bores
- Aerospace Industry
- Hydraulic manifolds
- Landing gear parts
- Structural components requiring lightweight deep bores
- Mold and Die Making
- Cooling channels in injection molds or die-casting tools
- Accurate and efficient heat dissipation paths
- Medical Devices
- Bone drills, cannulas, needle tubes
- Precision small-diameter, high-quality holes
- Hydraulics & Pneumatics
- Valve bodies, cylinders, pressure blocks
- Require precise axial bores for fluid control
- General Manufacturing
- Any component that needs a deep, accurate, and clean hole in metal, plastic, or composite materials
