Kyocera CNGA120404S01525 A66N

Cut Hardened Materials Like Butter — With 3X Longer Tool Life!

• Geometry & Style: CNGA — 80° rhombic (diamond) negative-type insert.
  
  Grade & Material: A66N grade — high-performance ceramic (Al₂O₃ + TiC) substrate with durable PVD coating (TiN). 

• Insert Size & Dimensions: IC 12.70 mm, thickness 4.76 mm, hole diameter ~5.16 mm. 

• Corner Radius (RE): typically 0.4 mm — ideal balance of edge strength and sharpness.

• Relief / Rake: Negative insert (0° clearance) — stable, robust for harder materials.

• Applications: External turning / finish-to-medium turning — particularly high-speed machining of cast iron, hardened steel, and ductile iron components.

• Longer Tool Life & Lower Cost per Part: A66N’s ceramic + PVD combination runs at high speeds and resists wear, oxidation and thermal degradation — so you get more parts per edge before changing inserts. 

• High-Speed Efficiency: Designed for high-speed turning, including dry machining of cast iron — reduces cycle times significantly, boosting throughput.
  
  Better Surface Finish & Stability: Sharp ceramic edge with robust negative geometry provides stable cutting even on hard, abrasive workpieces — resulting in smoother finishes, less chatter, fewer rejects.

• Reduced Downtime & Consistent Performance: Less frequent insert changes, stable edge integrity under heat and wear — ideal for heavy production runs.

• Automotive — turned shafts, housings, transmission components, hardened gears.

• Aerospace — hardened steel and cast-iron structural or housing components requiring high precision and durability.

• Die & Mold — pre-hardened mold components, cast-iron mold bases, hardened tooling fixtures.

• General Engineering & Heavy Machinery — cast-iron rolls, housings, journal turning, heavy-duty parts where hardness, wear resistance and longevity matter.

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