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Brand Name : ARNOLD
Place of Origin : China
Certification : ISO9001:2000
MOQ : 2
Price : 40—300 USD
Packaging Details : standard packaging
Delivery Time : 7-10day
Supply Ability : 1000000 Piece/Pieces per Month
Coolant Hole : Available
Shank Type : Straight Shank
Application : Deep Hole Drilling
Helix Angle : 30 Degrees
Coating : TiN, TiCN, TiAlN, Or TiAlCrN
Flute Type : Single Flute
Accuracy : ±0.001 Inch
Cutting Direction : Right Hand
A Gun Drill is a specialized deep hole drilling tool originally developed for manufacturing gun barrels—hence the name. It is designed to drill very deep and precise holes with excellent straightness, roundness, and surface finish.
Gun drills are widely used in industries like aerospace, automotive, mold making, medical devices, and hydraulics.
Key Features
Deep Hole Capability:
Capable of drilling depths exceeding 100 times the diameter (100×D) or more.
High Precision:
Excellent straightness, roundness, and surface finish.
Single-Flute Design:
Easier chip evacuation, though it requires slower feed rates.
Internal Coolant Flow:
Enables continuous cutting and efficient chip removal.
Comparison with Other Drilling Methods
| Feature | Gun Drill | Twist Drill | BTA Drill |
|---|---|---|---|
| Deep Hole Capability | Excellent (>100×D) | Limited (<5–10×D) | Superior (>150×D) |
| Hole Quality | High | Moderate | High |
| Chip Removal | Internal Coolant | External Coolant | Dual Flow (ID/OD) |
| Cost | Medium | Low | High |

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100×D Gun Drill Bits High Precision For Right Hand Cutting Direction Images |