Ningbo Lianchuang Hewo Precision Tools Co., Ltd
| 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 |
| Brand Name | ARNOLD |
| Place of Origin | China |
| Certification | ISO9001:2000 |
View Detail Information
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Product Specification
| 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 | Brand Name | ARNOLD |
| Place of Origin | China | Certification | ISO9001:2000 |
| High Light | 100×D Gun Drill Bits ，100×D cnc gun drill ，High Precision Gun Drill Bits | ||
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 |
Company Details
Business Type:
Manufacturer
Year Established:
2016
Total Annual:
6000000-8000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Ningbo Lianchuang Hewu Precision Tools Co., Ltd. specializes in providing comprehensive solutions for precision cutting technology. We offer customers high-quality metal cutting tools, including indexable inserts, carbide cutting tools, PCD cutting tools, as well as design development and technical ... Ningbo Lianchuang Hewu Precision Tools Co., Ltd. specializes in providing comprehensive solutions for precision cutting technology. We offer customers high-quality metal cutting tools, including indexable inserts, carbide cutting tools, PCD cutting tools, as well as design development and technical ...
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