CNMA inserts are 80° diamond-shaped negative rake turning inserts widely used in heavy-duty machining operations. They are known for their robust cutting edges, longer tool life, and superior performance in cast iron and steel applications.

At CNC Tools Depot, we offer the largest collection of CNMA inserts from leading global brands such as Korloy, Widia, Kennametal, Taegutec, ISCAR, Mitsubishi, and Sandvik – ensuring machinists get the right insert for every application.

🔧 Applications of CNMA Carbide Inserts

CNMA inserts are designed for tough machining conditions where strength and stability are crucial. Common applications include:

• Heavy-duty turning operations on lathes and CNC machines

• Roughing and semi-finishing of cast iron, forged steels, and stainless steels

• Facing and external turning with strong edge stability

• Interrupted cutting operations where shock resistance is needed

• Machining at higher feeds and depths of cut due to their negative rake strength

📐 Features & Benefits of CNMA Inserts

• 80° Diamond Shape: Offers strong cutting edges and excellent stability

• Negative Rake Angle: Provides higher strength for roughing and heavy machining

• Double-Sided Design: Usable cutting edges on both sides for cost-effectiveness

• Durability: Handles high cutting forces and tough materials with ease

• Versatility: Compatible with a wide range of tool holders and cutting conditions

🔄 Types of CNMA Inserts Available

CNMA inserts come in different grades, chipbreakers, and coatings to suit diverse machining needs. At CNC Tools Depot, you can find:

1. Uncoated CNMA Inserts – Best for cast iron and non-ferrous materials

2. CVD Coated CNMA Inserts – Ideal for high-speed turning of steel & stainless steel

3. PVD Coated CNMA Inserts – For excellent wear resistance and precision finishing

4. Different Grade Options – K (cast iron), P (steel), M (stainless steel)

5. Chipbreaker Variants – Roughing, semi-finishing, and finishing profiles

🌍 Brands We Supply

Find original CNMA inserts from world-leading cutting tool brands, including:

• Korloy CNMA Inserts

• Kennametal CNMA Inserts

• Taegutec CNMA Inserts

• Widia CNMA Inserts

• ISCAR CNMA Inserts

• Mitsubishi CNMA Inserts

• Sandvik CNMA Inserts