TNMA carbide insert

About TNMA 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

Precision Engineered for Industrial Efficiency

The TNMA carbide insert is engineered to meet ISO standards, ensuring consistent performance and dimensional stability during demanding machining operations. Its negative relief angle combined with a smooth ground or honed cutting edge delivers reliable results in high-volume production settings. Carefully chosen carbide grades, featuring advanced CVD/PVD coatings, extend tool life and resist corrosion, maximizing value for manufacturers and fabricators.


Versatile Machining for Steel, Cast Iron, and Non-Ferrous Metals

Designed for versatility, the TNMA insert adapts seamlessly to turning, cutting, and other machining applications. Its six cutting edges provide excellent cost efficiency, while compatibility with ISO turning tool holders ensures fast, convenient replacement. Whether working with steel, cast iron, or non-ferrous metals, these inserts maintain performance even under tough conditions, making them suitable for a wide array of industries.