HRC65 Super Hard Drill Bits(Internal Cooling)

HRC65 Super Hard Internal Coolant Drill

High-Efficiency Drilling for Hardened Steels | Internal Coolant & Solid Options

Engineered for high-performance drilling of hardened materials up to HRC65, this drill series is ideal for mold steel, tool steel, and alloy steels after heat treatment. Available in both internal coolant and solid designs, with a 140° point angle, these tools offer excellent center positioning, low cutting resistance, and efficient chip evacuation—perfect for high-speed, precision CNC operations in dry or MQL conditions.

Optimized for High-Hardness Materials (HRC46–68)
Manufactured from ultra-fine grain solid carbide, these drills combine high hardness with superior fracture resistance, maintaining cutting edge sharpness and geometry even under demanding loads during hardened steel machining.

140° Split Point Design for Accurate Entry
The specially engineered 140° point reduces axial thrust and minimizes tool walking. It provides superior centering accuracy, making it ideal for precision drilling in tight-tolerance applications.

Internal Coolant Channels for Deep Hole Drilling
Internal coolant design delivers cutting fluid directly to the drill tip, enhancing cooling and chip evacuation. This results in improved tool life, reduced heat buildup, and stable performance in deep hole drilling applications.

Solid Drill Option for Versatile Cooling Strategies
For setups using dry machining or MQL, the solid drill option provides a reliable and cost-effective alternative—suited to a wide range of machine environments and cooling configurations.

Precision 5-Axis CNC Grinding for Consistent Geometry
Each drill is produced using high-precision 5-axis CNC grinding, ensuring excellent concentricity, edge sharpness, and repeatability, which are essential for high-volume production and consistent part quality.