CNGN carbide inserts are double-sided, 0° clearance, 80° diamond-shaped inserts designed for high-rigidity and stable machining applications. These inserts are part of the CN family and are widely used in heavy-duty turning, roughing, and hard material machining.

At CNC Tools Depot, we offer the world’s largest selection of CNGN inserts from trusted global brands like Korloy, Widia, Kennametal, Taegutec, Mitsubishi, Sandvik, and ISCAR — ensuring you get premium quality at competitive prices.

⚙️ Understanding the CNGN Insert Code

CNGN inserts are solid negative inserts without a central hole, offering maximum edge strength and double-sided use, which makes them cost-efficient for rough machining operations.

🪓 Applications of CNGN Inserts

CNGN carbide inserts are ideal for:

• Cast Iron Machining (Gray & Ductile Iron)

• Hardened Steel (up to 65 HRC)

• High-Speed Roughing of Steel and Stainless Steel

• Heavy Interrupted Cuts

• Dry Machining Applications

Due to their solid, strong structure and lack of a chip breaker hole, CNGN inserts perform exceptionally well in hard turning and abrasive materials where edge wear resistance is critical.

🔩 Key Features & Benefits

• ✅ Double-Sided Design – Use both edges for cost efficiency

• ✅ No Center Hole – Maximum insert strength and rigidity

• ✅ High Edge Toughness – Suitable for interrupted and heavy cuts

• ✅ Excellent Surface Finish – Especially with ground-edge versions

• ✅ Available in CBN, Ceramic, and Carbide Grades

• ✅ Compatible with Negative Tool Holders (e.g., CN** tool holders)

🧱 Types of CNGN Inserts (By Material / Grade)

1. Carbide CNGN Inserts

Best for general-purpose turning on steel and cast iron with both PVD and CVD coatings (TiN, TiCN, Al₂O₃, etc.).

2. Ceramic CNGN Inserts

Used for high-speed machining of cast iron. Provide excellent wear resistance and thermal stability.

3. CBN CNGN Inserts (Cubic Boron Nitride)

Ideal for hard turning applications on hardened steels (>55 HRC) where carbide tools fail quickly.

4. PCD CNGN Inserts

Used for non-ferrous metals, aluminum alloys, and composites, offering mirror-like finishes.

🧰 Popular Brands & Part Numbers

• Korloy CNGN120408 / CNGN090312

• Kennametal CNGN120416S

• Widia CNGN120408T01020

• Taegutec CNGN120408T01020 TT6080

• Sandvik CNGN120408S01525 GC1525

Each variant is designed for specific cutting speeds, feed rates, and material hardness, ensuring you always find the right insert for your machining requirement.

🛒 Why Buy from CNC Tools Depot?

• 🌍 World’s Largest Marketplace for Carbide Inserts

• 🧩 Genuine Products from Global Brands

• ⚡ Fast Shipping & Bulk Order Support

• 🧾 GST Invoicing & PAN India Delivery

• 💬 Expert Support for Tool Selection

💡 CNGN Insert Selection Tips