Product Description:
About Gun Drills
A Gun Drill is a special type of drill used for making deep, precise holes, originally developed for drilling gun barrels — hence the name. It is widely used in industries like 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 | | 21.00 | 266.00 | 3.20 | 32.00 | 20.00 | 60.0 | TOGT 10.. | | 22.00 | 278.00 | 3.40 | 32.00 | 21.00 | 60.0 | TOGT 11.. | | 23.00 | 289.00 | 3.40 | 32.00 | 22.00 | 60.0 | TOGT 11.. | | 24.00 | 301.00 | 3.40 | 32.00 | 23.00 | 60.0 | TOGT 11.. | | 25.00 | 312.00 | 3.40 | 32.00 | 24.00 | 60.0 | TOGT 11.. | | 26.00 | 324.00 | 3.60 | 40.00 | 25.00 | 70.0 | TOGT 12.. | | 27.00 | 335.00 | 3.60 | 40.00 | 26.00 | 70.0 | TOGT 12.. | | 28.00 | 337.00 | 3.60 | 40.00 | 27.00 | 70.0 | TOGT 12.. | | 29.00 | 360.00 | 4.57 | 40.00 | 27.00 | 69.0 | TOGT 13.. | | 30.00 | 383.00 | 4.57 | 40.00 | 29.00 | 69.0 | TOGT 13.. | | 31.00 | 383.00 | 4.57 | 40.00 | 29.00 | 69.0 | TOGT 13.. | | 32.00 | 395.00 | 4.57 | 40.00 | 30.00 | 69.0 | TOGT 13.. | | Diameter Range(mm) | Insert | Solid Carbide Guide Pad | | 14.00-15.99 | TOGT 07.. | GPS-05-18-060 | | 16.00-18.00 | TOGT 08.. | GPS-05-18-075 | | 18.01-20.00 | TOGT 09.. | GPS-06-20-085 | | 20.01-21.00 | TOGT 10.. | GPS-06-20-085 | | 21.01-21.99 | TOGT 10.. | GPS-06-20-100 | | 22.00-25.00 | TOGT 11.. | GPS-06-20-100 | | 25.01-28.00 | TOGT 12.. | GPS-06-20-120 | | 28.01-29.99 | TOGT 13.. | GPS-06-20-120 | | 30.00-32.00 | TOGT 13.. | GPS-07-20-120 | | 32.01-39.00 | TOGT 14.. | GPS-07-20-120 | | 39.01-40.00 | TOGT 14.. | GPS-08-25-155 | |
Applications:
Applications of Gun Drills
Gun drills are utilized in various industries and applications where deep, straight, and precise holes are essential. Some common industries and examples include:
- Firearms Industry
- Gun barrels: The original application of gun drills, requiring extremely straight and 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, ensuring accurate and efficient heat dissipation paths.
- Medical Devices
- Bone drills, cannulas, needle tubes, requiring precision small-diameter, high-quality holes.
- Hydraulics & Pneumatics
- Valve bodies, cylinders, pressure blocks necessitating precise axial bores for fluid control.
- General Manufacturing
- Any component that requires a deep, accurate, and clean hole in metal, plastic, or composite materials.
