【Product Name】The NACHI Long Flute Square Tooth Roughing End Mill (Model: 6368) is a specialized tool engineered for deep-reach, high-load cutting. It primarily addresses tool deflection, poor chip breaking, and high cutting resistance during deep side milling or high-aspect-ratio operations.

【Key Features & Benefits】

• Square Tooth Profile: Features a specialized Square Tooth wave geometry that fragments tough, stringy chips into smaller segments. This significantly lowers the total cutting resistance during long-contact milling—a practical recommendation for stable deep roughing.

• Extended Flute Length: The long-flute design allows for deeper single-pass profiling or side milling, reducing the need for multiple step-downs and greatly enhancing productivity in large component manufacturing.

• High-Toughness HSS-CO: Made from Cobalt High-Speed Steel (HSS-CO), offering superior dampening compared to carbide. It is more forgiving against the vibrations inherent in long-edge machining, preventing sudden tool failure.

• Variable Helix Design: The 30~32 degree variable helix disruptions harmonic resonance, providing smoother operation and better process control during deep-reach milling tasks.

【Applications & Usage】

• Primary Applications: Ideal for high-efficiency bulk material removal on deep sidewalls, heavy-duty profiling, and long-ratio slotting.

• Recommended Materials:

  • ISO N (Aluminum Alloys, Copper, Plastics): Optimized for high-volume chip flow in 6061 and 7075 aluminum to prevent material welding.

  • ISO P (Carbon/Alloy Steel): Best for general-purpose roughing of structural steels under HRC30.