Solid carbide deep hole drills
At Sundi Cutting Tools, our Deep Hole Carbide Drills are specifically designed for high-performance drilling in deep hole applications. These drills feature advanced flute geometry and optimized coolant channels to ensure efficient chip removal and superior cooling during the cutting process, making them ideal for applications in a variety of tough materials.
Benefits:
Faster Drilling Speeds: Carbide construction enables faster cutting speeds compared to HSS drills, improving overall machining efficiency and reducing production times.
Extended Tool Life: The carbide material and optimized design significantly increase tool longevity, making it a cost-effective choice for high-volume drilling.
Precise Hole Dimensions: Designed to maintain tight tolerances even at long lengths, these drills deliver accurate hole sizes and excellent surface finishes.
Ideal for Tough Materials: Perfect for drilling through hardened steel, stainless steel, cast iron, high-temperature alloys, and other challenging materials, ensuring reliable results.

Need efficient and reliable deep hole drilling solutions?
Contact Sundi Cutting Tools today to learn more about our Deep Hole Carbide Drills and how they can improve your machining operations.
- High wear resistance
- Reduce the machine time
- Stable Performance
- Easy to use
The Features of Deep Hole Carbide Drills
Advanced Flute Design
The innovative flute geometry allows for efficient chip evacuation, ensuring smooth and uninterrupted drilling in deep holes, even with high feed rates.
Optimized Coolant Supply
Equipped with specially designed coolant channels, these drills ensure that the cutting edges are adequately cooled during operation, preventing overheating and extending tool life.
Superior Chip Removal
The optimized chip removal capability reduces the risk of chip buildup, ensuring smooth operation and preventing tool binding or jamming, even in deeper holes.
Coated for Durability
The special coating on the drill tip ensures enhanced wear resistance and better performance in challenging deep hole drilling operations.
Specifications of Deep Hole Carbide Drills
Our solid carbide deep hole twist drills offer a length-to-diameter ratio of up to 30xD, providing outstanding drilling depth without compromising hole precision or quality. For even deeper drilling needs, we also offer gun drills as a specialized solution. Below are some of our standard deep hole drill lengths:
8xD
12xD
15xD
20xD
25xD
30xD
If you have specific requirements, please don’t hesitate to contact us. We will provide you with the most suitable hole machining solution.