10-20mm Diameter Gun Drill Bits With Bright Black Oxide Surface Finish

Product Description:

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

Structure
- Single Cutting Edge: Facilitates chip removal and diminishes vibrations.
- Guide Pads: Aid in maintaining straightness and enhancing surface finish.
- Internal Coolant Channel: Allows high-pressure coolant flow within the tool to cool and eliminate chips.
- Long, Thin Drill Tube: Particularly suitable for drilling deep holes — up to 100 times the diameter or more.

Advantages
- Ideal for deep hole drilling.
- Produces precise holes with smooth surfaces.
- Effective removal of chips with internal coolant system.
- Commonly utilized for gun barrels, engine components, molds, and surgical instruments.

Features:

Excellent Deep Hole Capability

Gun drills can drill holes over 100 times the diameter (D) and are ideal for deep, narrow, and precision bores.

High Hole Accuracy

Gun drills provide superior straightness, roundness, and coaxiality, typically achieving IT8–IT10 tolerance levels.

Smooth Surface Finish

Surface roughness can reach Ra 0.4–1.6 µm with gun drills, reducing the need for additional reaming or honing.

Efficient Chip Removal

Gun drills feature internal high-pressure coolant that flushes chips out smoothly, preventing clogging and overheating.

Stable and Low Vibration Drilling

Guide pads on gun drills stabilize the tool and reduce tool deflection, making them suitable for long and precise holes.

Long Tool Life (with proper use)

When used with correct speeds, feeds, and coolant, gun drills can maintain sharpness over long runs. They are available with carbide-tipped or solid carbide options.

Applicable to Various Materials

Gun drills are effective on steel, aluminum, copper, titanium, plastic, and other metals or composites.

Automation-Friendly

Gun drills can be used in CNC machines, gun drilling machines, or modified lathes, making them versatile and compatible with automation processes.

Technical Parameters:

Applications:

Applications of Gun Drills

Gun drills find their utility in various industries and scenarios where there is a need for deep, straight, and precise holes. Let's explore some common applications in different industries:

• Firearms Industry
  Gun barrels: The traditional and primary application of gun drills where exceptionally straight and high-precision bores are essential.
• Automotive Industry
  - Engine components: Used for crafting crankshafts, camshafts, connecting rods
  - Fuel system parts: Including injectors, valve bodies, oil passages
  - Transmission and hydraulic systems: Utilized for creating precision deep bores
• Aerospace Industry
  Components like hydraulic manifolds, landing gear parts, and structural components that necessitate lightweight deep bores
• Mold and Die Making
  Crafting cooling channels in injection molds or die-casting tools to establish accurate and proficient heat dissipation paths
• Medical Devices
  Producing bone drills, cannulas, needle tubes with precision small-diameter, high-quality holes
• Hydraulics & Pneumatics
  Constructing valve bodies, cylinders, and pressure blocks that need precise axial bores for fluid control
• General Manufacturing
  Usage for any component requiring a deep, accurate, and clean hole in metal, plastic, or composite materials