CNMG 120408 T9205 Wendeplatten - Tungaloy

Take advantage of the combination of high productivity, a wear-resistant CVD coating and robust edge geometry for steady production results; order the insert directly via Metav Werkzeuge or consult the team for a tailored setup.

CNMG120408 T9205 CNMG indexable turning insert for Turning — Tungaloy

CNMG120408 T9205 is an ISO-format indexable insert designed for productive turning of steel in stable setups; compatible with ISO holders that match form, clearance and tolerances

• CNMG geometry ISO 120408 insert
• CVD-coated T9205 grade for high speeds
• Corner radius 0.8 mm for robust edges
• Double-sided chipbreaker, cylindrical hole

Higher productivity through optimised grade and coating

The insert combines a T9205 CVD-coated surface with a cemented carbide substrate to enable increased cutting speeds in steel turning. The CVD-coated layer gives improved wear resistance under stable cutting conditions, which reduces tool change frequency and contributes to a lower cost per part. In practice, the optimised coating and grade mean a more consistent tool life when machining requiring repetitive, productive cuts, translating into measurable cycle-time savings on series work.

Reliable system compatibility and precise geometry

Manufactured to ISO dimensions, the rhomboid geometry and the 80° lead angle ensure predictable engagement in standard external and internal turning holders. Compatibility is determined by form, free angle, tolerance class, clamping and thickness — the insert’s 0° clearance and the ISO designation simplify matching to existing toolholders. Selecting the appropriate chipbreaker and grade according to workpiece stability and cutting mode delivers stable cutting forces and improved surface finish in finishing and semi-finishing operations.

Robust edge design for longer service life

With a 0.8 mm corner radius, a plate thickness of 4.76 mm and a double-sided chipbreaker, the insert provides a stable cutting edge that tolerates moderate interruptions and cross-section variations. The double-sided format doubles the available cutting edges per insert, offering economical edge utilisation and fast indexation. The cylindrical hole design supports secure clamping and repeatable positioning, which together help maintain dimensional accuracy and reduce setup variability across batches.

Application guidance and practical benefits

Intended primarily for turning steel under stable conditions, this insert performs best when paired with a corresponding external holder, clamp plate and the correct fastening screw. The system approach — insert, holder and clamping kit — ensures process reliability; choosing the right combination of chipbreaker and grade is crucial for optimised chip control and surface integrity. The overall result is a dependable, productive solution suited to medium- and high-volume metal-cutting environments.

For a process-ready recommendation and to ensure full compatibility with existing toolholders, contact Metav Werkzeuge — Metav Werkzeuge can advise on holder selection, clamping kits and optimal cutting data for Tungaloy inserts via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6785690-Tungaloy
• Manufacturer SKU: TUN6785690
• Manufacturer article number: 6785690
• Designation: CNMG120408
• Name: CNMG120408 T9205 Tungaloy insert

Core data

• Corner radius: 0.8 mm
• Insert size: 12 mm
• Thickness: 4.76 mm
• Clearance angle: 0°
• Lead angle: 80°
• Hole: with cylindrical hole

Features

• Grade: T9205, CVD-coated cemented carbide
• Shape: rhomboid CNMG
• Chipbreaker: double-sided
• Application: turning
• Series: ISO turning indexable inserts

FAQ

What materials is this insert suitable for?
The insert is specified for productive turning of steel; the T9205 CVD-coated grade is optimised for wear resistance in steel machining.

How does the double-sided chipbreaker affect tool life?
Double-sided chipbreakers provide multiple indexable edges, which extends the usable life per insert and reduces tooling costs while maintaining stable chip control.

Which holders are compatible with this ISO insert?
Compatibility depends on holder form, clearance angle, tolerance class, clamping and thickness; the ISO designation and CNMG120408 geometry simplify matching to standard external and internal turning holders.

What are the key geometry values to check when selecting a holder?
Important values include the 80° lead angle, 0° clearance, plate thickness (4.76 mm) and the rhomboid CNMG form to ensure correct seating and cutting orientation.

Is the insert suitable for interrupted cuts or roughing?
The 0.8 mm corner radius and robust substrate give good edge strength for stable conditions; for heavily interrupted cuts, consider a grade and geometry specifically designed for tougher impact loads.

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.