CNMG 120408 T9225 Wendeplatten - Tungaloy

Reliable CVD-coated carbide and a robust universal grade ensure stable edge life and process security for medium to heavy steel turning. Benefit from ISO compatibility and a rhombic, double-sided chipbreaker for flexible external and internal turning — order directly via Metav Werkzeuge or consult our technical advisers.

CNMG120408 T9225 turning insert for turning by Tungaloy

The CNMG120408 T9225 is a rhombic ISO indexable insert designed for robust medium to heavy steel turning with a CVD-coated carbide grade and a double-sided chipbreaker

• CVD-coated carbide grade T9225
• Robust universal grade for steel turning
• Double-sided chipbreaker, rhombic shape
• ISO-compatible 80° geometry, cylindrical hole

Increased edge life and consistent performance under mixed conditions

The combination of a CVD-coated surface and a wear-resistant carbide substrate gives the insert a balanced hardness and toughness profile. The T9225 grade is specified for medium to heavy steel turning, delivering reliable tool life even when engagement conditions change or cuts are lightly interrupted. The chemical vapour deposition layer improves resistance to abrasive wear and reduces flank wear progression, which translates into fewer indexings and a steadier production rhythm. For operations that prioritise uptime and repeatable component quality, this geometry and grade provide measurable improvements in process stability.

ISO compatibility and simple integration into existing tool systems

Designed as an ISO-standard rhombic plate with an 80° approach angle and a 0° relief, the insert fits into common external holders and boring bars when the form, relief angle, tolerance class, fastening method, size and thickness are matched. The CNMG shape and cylindrical hole enable secure clamping and straightforward replacement, while the double-sided chipbreaker extends indexable life by offering two usable cutting edges. Compatibility depends on the holder and clamping set; check form and tolerance class to ensure a correct fit. Proper match of insert geometry and holder reduces setup time and minimises the risk of incorrect seating during tool changes.

Practical machining advice for improved productivity and finish

For external and internal turning, choose a chipbreaker and grade that suits the workpiece material and the stability of the machining set-up. The radius 0.8 mm profile balances edge strength and achievable surface finish, making it suitable for both roughing passes and moderated finishing cuts. In heavier engagements, the insert’s geometry supports stable chip formation and reliable evacuation, while in interrupted cuts the T9225 grade provides the necessary toughness. Where surface integrity is critical, reduce feed slightly for the final pass to exploit the insert’s cutting edge geometry and achieve a consistent finish. Selecting the appropriate holder and clamping torque further improves repeatability and reduces the likelihood of vibration-induced wear.

For personalised application advice on Tungaloy indexable inserts and to confirm holder compatibility, contact Metav Werkzeuge’s experts at info@metav-werkzeuge.com or call +49 2822 7131930 — our team will recommend the optimal grade and chipbreaker combination for the intended turning task.

Technical data

• Manufacturer article number: 6780715
• Manufacturer SKU: TUN6780715
• SKU: 6780715-Tungaloy
• Model series: ISO turning indexable inserts
• Material: Carbide

Numbers / Core technical data

• Radius: 0.8 mm
• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Approach angle: 80°
• Relief angle: 0°

Designs / Special features

• Rhombic plate form (CNMG)
• CVD-coated carbide, grade T9225
• Double-sided chipbreaker
• Cylindrical hole for secure clamping
• Intended application: turning (external and internal)
• ISO-standard compatible insert geometry

FAQ

What materials is this insert intended for?
The CNMG120408 T9225 insert is designed primarily for medium to heavy steel turning, offering balanced wear resistance and toughness for varying engagement conditions.

Can the insert be used for interrupted cuts?
Yes. The T9225 carbide grade provides additional toughness suitable for lightly interrupted or variable cuts, improving resistance to chipping.

How does the chipbreaker affect machining?
The double-sided chipbreaker promotes controlled chip formation and evacuation, which supports consistent surface quality and allows two usable cutting edges per indexable side.

Which holders are compatible with this ISO insert?
Compatibility depends on holder form, relief angle, tolerance class, fastening method, size and thickness; the insert fits ISO-compatible holders designed for the CNMG form.

What cutting geometry parameters are relevant for setup?
Key parameters include the 80° approach angle, 0° relief, and the 0.8 mm corner radius; these influence cutting force, finish and edge strength.

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.