HRC65 Corner Radius Long Neck End Mill【4 Flutes Long Neck Φ1-4】

Optimized for Hardened Steel up to 65HRC – Reliable for High-Precision Deep Feature Milling
Built from ultra-fine grain carbide with a reinforced neck design, this end mill is purpose-made for machining high-hardness tool steels in complex geometries. It combines excellent wear resistance, reach, and edge strength—ideal for mold cavities, ribs, slots, and narrow walls.

Corner Radius Geometry Enhances Edge Strength and Surface Finish
The corner radius improves tool edge durability by reducing stress concentration at the cutting corners—effectively preventing chipping and improving surface quality. This is particularly important in continuous finishing operations on hardened materials.

4-Flute Design Enables Higher Feed Rates and Smooth Finishing
The 4-flute structure allows for more cutting edges engaged per rotation, increasing metal removal rates and improving surface finish while maintaining tool stability. Ideal for semi-finishing and finishing in hardened steel, especially where accuracy and consistency matter.

Long Neck, Short Flute Ratio – Stable Deep Reach with Minimal Deflection
Designed for deep cavity and extended reach machining, the long neck design maintains tool rigidity and reduces vibration even during fine-detail contouring. Perfect for precision mold machining where access and stability are equally critical.

High Red Hardness Coating for Superior Thermal Resistance
Coated with a high-performance nano-layer (e.g., HG), this tool withstands elevated cutting temperatures, enabling dry or minimum-lubrication machining. It supports high-speed, sustainable, and cost-efficient production in modern CNC environments.

Cutting Parameters Provided – Streamlined Setup, Consistent Output
Every tool includes tested machining parameters—cutting speed, feed rate, depth of cut—specifically tuned for hardened steels, allowing operators to optimize performance while minimizing trial-and-error.