4 Flutes Long Neck Corner Radius End Mill

Specialized for High-Hardness Materials up to 65HRC

Crafted from premium ultra-fine grain carbide and coated with a high-performance thermal-stable layer (e.g., HH), this tool ensures excellent wear resistance and cutting edge stability when machining heat-treated steels like H13, D2, and SKD11. It’s designed to withstand the demands of hardened mold and die machining.

4-Flute Geometry Maximizes Metal Removal Rate and Surface Quality

The four-flute configuration offers a perfect balance between cutting speed and surface finish. Multiple cutting edges allow for higher feed rates and smoother chip flow, making it ideal for semi-finishing and finishing passes in high-hardness materials with minimal vibration.

Long Neck Design for Deep Cavity and Narrow Feature Accessibility

The extended neck length allows access to deep-walled mold cavities, thin ribs, and intricate geometries while maintaining overall tool rigidity. Reduces the need for special setups or extended holders in deep-feature machining.

Corner Radius Enhances Edge Strength and Prevents Premature Chipping

The corner radius tip strengthens the cutting edge, distributing force more evenly to minimize edge wear and chipping. This design also helps maintain better surface finish in interrupted or complex contour cutting conditions.

High-Red-Hardness Coating Enables Dry or MQL High-Speed Cutting

Optimized for elevated-temperature machining environments, the coating resists oxidation and softening under heat, supporting high-speed dry or minimum-lubrication cutting—improving tool life while lowering coolant usage and production costs.

Application-Based Cutting Parameters Included – Reducing Trial and Error

Samho provides verified and tested cutting data tailored for 65HRC materials—including spindle speed, feed per tooth, and depth of cut—to help users shorten setup time, reduce risk of tool failure, and maximize machining efficiency.