4 Flute Carbide Roughing End Mill High Feed Serrated Edge for Steel/Stainless CNC Milling 6mm-20mm

Introduction:

Our 4-flute carbide roughing end mill features an aggressive serrated edge design for high-efficiency material removal in steel (HRC 50+), stainless steel, and alloy metals. Engineered with ultra-fine grain tungsten carbide and optimized chip breakers, this industrial-grade rougher delivers 40% faster metal removal while reducing vibration and power consumption—perfect for heavy-duty CNC milling in mold, aerospace, and general engineering applications.

Features:

• ✔ 4-Flute Serrated Edge – Breaks chips into small segments for easy evacuation.
  ✔ High Feed Design – Enables 0.3-0.8mm/tooth feed rates (2X standard end mills).
  ✔ Solid Carbide Construction – 5X longer life than HSS roughers.
  ✔ TiAlN/AlCrN Coating – Optional for heat resistance (up to 900°C).
  ✔ Variable Helix (35°/40°) – Eliminates harmonic vibration.
  ✔ Precision Ground – <0.01mm runout for stable performance.
  ✔ Size Range – 6mm-20mm (1/4" to 3/4"), custom lengths available.

Advantages:

✅ 50% Faster Roughing – Removes more material per pass.
✅ Reduced Machine Load – Lower cutting forces protect spindles.
✅ Smoother Finishes – Ra 1.6-3.2μm achievable (minimizes semi-finishing).
✅ Deep Cut Capable – Stable at up to 1.5xD axial depth.
✅ Through-Coolant Ready – Internal channels (M10+ sizes).

Applications:

  CHANGZHOU AMG PRECISION TOOL MANUFACTURING CO., LTD. is a leading manufacturer and solution provider specializing in high-performance carbide cutting tools for precision CNC machining applications. With a strong commitment to innovation and quality, we design and produce an extensive range of standard and custom cutting tools, including carbide drill bits, end mills, reamers, and complex non-standard forming tools tailored to meet the most demanding machining challenges.