CNMG 120408 T9235 Wendeplatten - Tungaloy

Take advantage of a CVD-coated carbide grade optimised for steel, the robust CNMG geometry with an 0.8 mm corner radius, and the ISO compatibility that simplifies tool management — order the CNMG120408 T9235 insert directly via Metav Werkzeuge or ask our consultants if needed.

CNMG120408 T9235 CNMG turning insert, 80° — Tungaloy

The CNMG120408 T9235 is an ISO rhombic turning insert designed for external and internal turning of steel, offering a 0° clearance angle and a double-sided chipbreaker for interrupted cuts.

• CVD-coated carbide grade T9235
• Rhombic CNMG form, 80° lead angle
• 0.8 mm corner radius for strength
• Double-sided chipbreaker for interrupted cuts

Reliable performance in steel turning

The insert’s primary advantage is its CVD-coated carbide composition, specified as T9235, a tough grade developed for machining steel under lower cutting speeds and variable conditions. This tough grade reduces the risk of chipping during unstable operations and keeps edge life predictable in interrupted cuts. The coating supports wear resistance while the substrate maintains fracture toughness, which together deliver a stable tool life and more consistent component quality — a practical outcome for mixed-batch production where process reliability matters.

Geometry that balances strength and accessibility

The rhombic CNMG form with an 80° lead angle and an 0° clearance provides a versatile compromise between cutting-edge strength and toolholder access. The 0.8 mm corner radius increases edge robustness, improving resistance to mechanical shock and producing a more even surface in roughing passes. At the same time, the double-sided chipbreaker helps control chip formation during interrupted cuts, reducing rework and enhancing machine availability. For finishing, the geometry permits fine surface results when combined with appropriate feeds and speeds.

System compatibility and straightforward integration

These inserts conform to the ISO turning insert family, making replacement and inventory management straightforward. Compatibility with a specific holder is defined by form, clearance angle, tolerance class, fixing method, overall size and thickness — the insert’s 12 mm inscribed circle, 4.76 mm thickness and central cylindrical hole align with common ISO clamping systems. This standardisation shortens set-up time and reduces the risk of fitting errors, supporting predictable tool changes and less downtime on the shop floor.

Practical machining guidance and support

For the toughest results in unstable conditions or interrupted cutting, select the T9235 grade and pair the insert with a rigid holder and appropriate negative rake geometry where required. Lower cutting speeds and modest feed rates help preserve the edge in interrupted cuts, while the chipbreaker design assists evacuation and reduces heat concentration at the cutting zone. If further machining parameters or material-specific advice is needed, the supplier can provide tailored recommendations to match component tolerances and throughput targets, supporting efficient process planning.

Contact Metav Werkzeuge for tailored application advice and reliable supply of Tungaloy CNMG120408 T9235 inserts — Metav Werkzeuge is available for technical consultation and order coordination

Technical data

• Article number: 6785818
• Manufacturer SKU: TUN6785818
• SKU: 6785818-Tungaloy
• Manufacturer: Tungaloy
• Model series: ISO turning inserts
• ISO designation: CNMG120408

Numbers / Core technical data

• Inscribed circle: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Lead angle: 80°
• Clearance angle: 0°
• Manufacturer article number: 6785818

Designs / Special features

• Material: carbide
• Coating / grade: T9235 (CVD-coated carbide)
• Shape: rhombic CNMG
• Hole: with cylindrical hole
• Chipbreaker: double-sided
• Typical application: external and internal turning
• Compatible with ISO holders and clamping systems

FAQ

What materials is this insert intended for?
The CNMG120408 T9235 insert is designed primarily for machining steel and performs well in interrupted or unstable cutting conditions due to the T9235 tough grade.

Can the insert be used for both roughing and finishing?
Yes, the CNMG geometry and 0.8 mm corner radius make the insert suitable for roughing where edge strength is crucial and, with adjusted feeds, for finishing where surface quality is required.

How does the chipbreaker affect cutting performance?
The double-sided chipbreaker on this Tungaloy insert helps control chip formation and evacuation during interrupted cuts, reducing heat build-up and improving process stability.

Is this insert compatible with ISO clamping systems?
The insert follows ISO dimensions (CNMG120408) and the 12 mm inscribed circle, 4.76 mm thickness and central cylindrical hole are compatible with common ISO holders and clamping sets.

Which cutting conditions suit the T9235 grade best?
The T9235 CVD-coated grade is optimised for lower cutting speeds in steel and for operations subject to interruption or vibration; a rigid set-up and conservative parameters extend tool life.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.