CNMG carbide insert

About CNMG carbide insert

CNMG carbide inserts are 80-degree diamond-shaped, double-sided (negative) turning inserts designed for heavy-duty metal cutting, particularly in steel and cast iron. Featuring 4 or 8 cutting edges, they are prized for economic, high-productivity, and medium-to-roughing operations in CNC lathes, offering exceptional thermal stability and surface finish. [1, 2, 3, 4, 5]

Key Characteristics and Technical Specifications

• Shape: 80-degree rhombus (diamond) shape allows for versatile turning and facing, often used in MCLNR/L, PCLNR/L, and MCLNR/L tool holders.
• Design: Double-sided (negative rake) provides maximum strength, durability, and cost-effectiveness by offering 4 to 8 cutting edges before replacement.
• Material & Coating: Generally produced from cemented carbide with coatings like CVD or PVD to enhance wear resistance.
• Common Applications: Primarily used for external and internal turning, roughing, and semi-finishing of steel, stainless steel, and cast iron.
• Chip Control: Usually features specialized chip-breaker geometry for efficient chip management. [1, 2, 3, 6]

Common ISO Designations

• CNMG 120404/120408: The most common sizes, where 12mm is the cutting edge length, 4.76mm is the thickness, and 0.4/0.8mm is the corner radius.
• CNMG 160612: Larger, heavier duty inserts (e.g., 16mm cutting edge). [7, 8, 9]

Commonly Available From:

• Sandvik Coromant (Coromant Capto)
• Iscar
• Hoffmann Group
• Various industrial suppliers on IndiaMART

These inserts are essential in high-speed, high-feed machining environments requiring high accuracy and longevity. [10, 11, 12, 13, 14]

AI responses may include mistakes.

[1] https://www.youtube.com/watch?v=6AuwE3L6bEo

[2] https://m.indiamart.com/proddetail/cnmg-carbide-insert-21688218512.html

[3] https://www.jaibros.com/blogs/from-our-blog/cnmg-insert-high-performance-solution-for-cnc-turning

[4] https://www.indiamart.com/proddetail/cnmg-carbide-inserts-2854094711733.html

[5] https://webshop.iscar.in/catalogue/product/1905075

[6] https://webshop.iscar.in/catalogue/product/1904949

[7] https://www.industrybuying.com/turning-inserts-alumina-TOO.TUR.18697838

[8] https://www.aliexpress.com/i/1005005995417928.html

[9] https://www.engineeringsupplies.co.uk/cnmg-160612-mg-et24p-carbide-medium-unstable-cutting-inserts.html

[10] https://www.indiamart.com/proddetail/cnmg-carbide-cutting-tool-insert-2856855169630.html

[11] https://www.ubuy.ecproduct/PZPJOKBAK-10pcs-carbide-turning-inserts-cnmg120408-cnmg120404-ma-ue6020-us735-vp15tf-external-turning-tool-cnc-turning-insert-angle-cnmg120408-ma-vp15tf

[12] https://www.ubuy.gy/product/6NWYP5XK-sandvik-coromant-snmg-644-mr-4315-t-max-p-insert-for-turning-carbide-square-neutral-cut-4315-grade-t

[13] https://www.ubuy.com.omproduct/6NWYP67C-sandvik-coromant-snmg-433-mr-4315-t-max-p-insert-for-turning-carbide-square-neutral-cut-4315-grade-t

[14] https://www.ubuy.mqproduct/X2A8M5KQ-10pcs-ccmt060204-carbide-lathe-turning-inserts-carbide-turning-inserts-set-for-sclcr-turning-tool-ho

Exceptional Durability and Versatility

Engineered from tungsten carbide, the CNMG indexable insert excels in demanding machining environments. Its double-sided design and multi-purpose chipbreaker allow for efficient turning, facing, and finishing on steel, cast iron, and stainless steel. The high resistance to wear, heat, and corrosion ensures extended tool life, while the insert's compatibility with standard tool holders offers seamless integration into your existing setup.


Precision Craftsmanship with Premium Coating

Featuring a superior TiN or TiAlN coating, this insert delivers polished performance while minimizing wear. With a precise 0.05 mm tolerance, an 80 corner angle, and exceptional edge stability, the CNMG insert guarantees accuracy in high-capacity operations. Its square-shaped, clamp-mounted design further reinforces secure placement, ensuring optimal surface finish-even in heavy or interrupted cutting conditions.