CNMA carbide insert

About CNMA carbide insert

Carbide inserts are small, replaceable, high-hardness cutting tools made of tungsten carbide and cobalt, primarily used in lathes, mills, and drills for machining hard materials like steel, cast iron, and alloys. These indexable tools increase productivity by offering high wear resistance and enabling faster cutting speeds, often with multiple edges that can be rotated when worn. [1, 2, 3, 4, 5]

Key Characteristics and Components

• Material: Comprised of cemented carbide, combining high hardness (HRA 89-93) with toughness to resist cutting forces.
• Shapes: Common shapes include Triangle (T), Diamond (C, D), Square (S), and Round (R), each suitable for specific operations like boring, turning, or profiling.
• Designation Code (e.g., CNMG 120408):
• Shape: C (Diamond 80).
• Clearance Angle: N (0).
• Tolerance: M (Tolerance class).
• Type: G (With hole and chip breaker).
• Size: 12 (Approx. 12mm edge length).
• Thickness: 04 (Approx. 4.76mm).
• Radius: 08 (0.8mm nose radius). [1, 6, 7, 8, 9]

Selection Factors

• Material Application: Represented by letters, such as P (Steel), M (Stainless), K (Cast Iron), and S (Heat-resistant alloys).
• Operation: Roughing requires stronger, thicker inserts with larger radii, while finishing requires smaller radii for better surface quality.
• Tool Holder: The insert shape must match the corresponding tool holder's geometry. [6, 7, 10, 11]

Key Advantages

• High Wear Resistance: Lasts 5-100 times longer than high-speed steel.
• High Heat Resistance: Maintains structural integrity at high temperatures.
• Efficiency: Allows for faster production and improved surface finishes. [1, 2]

AI responses may include mistakes.

[1] https://www.cycarbide.com/types-characteristics-and-applications-of-carbide-insert.html

[2] https://www.kingcarbide.com/article/what-are-carbide-cutting-inserts-and-how-are-they-used-newsinfo-61.html

[3] https://huanatools.com/what-are-carbide-inserts-and-how-are-carbide-inserts-made/

[4] https://www.mmc-carbide.com/us/technical_information/tec_guide/tec_guide_carbide

[5] https://www.mscdirect.co.uk/holemaking-drilling-tools/indexable-drills/indexable-drill-inserts

[6] https://www.youtube.com/watch?v=FGDM2yxkbos

[7] https://www.youtube.com/watch?v=_YDw2_WqCMY

[8] https://www.youtube.com/watch?v=JDpBf6DySUE

[9] https://huanatools.com/how-to-choose-the-right-carbide-inserts/

[10] https://www.estoolcarbide.com/article/how-to-understand-the-type-of-carbide-inserts-newsinfo-29.html

[11] https://www.cargo.org.in/blog/what-are-cnmg-insert

Engineered for Heavy-Duty Performance

Optimized for industrial turning tasks, the CNMA carbide insert's negative rake and robust geometry allow for stability and versatility in medium to heavy machining. Its double-sided design and rhombic shape maximize usable cutting edges, offering cost-effective, reliable solutions.


Durable Materials and Advanced Coating Options

Manufactured from premium tungsten carbide, these inserts feature options for CVD/PVD coating or uncoated surfaces. Coating enhances hardness (up to 93 HRA) and corrosion resistance, making them suitable for long tool life and effective cutting across steel, cast iron, and stainless steel.


Precision and Quality Assurance

Adhering to ISO CNMA standards, each insert offers a 0.05 mm tolerance and is rigorously tested to guarantee consistency and accuracy. A matte or polished finish provides both functional and aesthetic benefits, while its plastic box packaging ensures secure storage and delivery.