CNMG 120412 T9235 Wendeplatten - Tungaloy

Combine the toughness of the CVD-coated T9235 grade with a rhombic 80° geometry and a double-sided chipbreaker to secure stable chip control and longer tool life; order the insert via Metav Werkzeuge or consult their specialists for application advice.

CNMG120412 T9235 — turning indexable insert by Tungaloy

CNMG120412 T9235 is a rhombic, ISO-standard turning indexable insert intended for external and internal turning of steel under unstable or interrupted cutting conditions

• CVD-coated carbide grade T9235
• Optimised for steel turning
• Double-sided chipbreaker for interrupted cuts
• Rhombic 80° geometry with cylindrical hole

Consistent cutting performance where stability is limited

The CVD-coated T9235 carbide composition delivers increased toughness, which is essential when machining steel at lower cutting speeds or under unstable conditions. The combination of the CVD-coated surface and hardened substrate reduces chipping and supports a predictable wear pattern, resulting in fewer unexpected tool changes. As a consequence, cycle times become more reliable and process planning benefits from reduced variability. For workshops seeking measurable productivity improvements, this grade offers a pragmatic balance between tool life and cutting-edge robustness.

Secure clamping and ISO compatibility for predictable setups

Compatibility with a toolholder depends on relief angle, form, tolerance class, fastening method, size and thickness; the rhombic CNMG120412 format, the cylindrical hole and the standard thickness ensure straightforward fitment in common clamping systems. This secure mechanical interface minimises vibration and micro-movements at the cutting edge, which translates directly into improved surface finish and repeatable results. Explaining technical terms: a cylindrical hole provides centralised clamping force and contributes to positional accuracy, while the rhombic shape enables a favourable engagement angle for external and internal turning tasks.

Better surface quality and efficient chip control on steel

The included double-sided chipbreaker is designed to shape and break chips effectively during interrupted and continuous cuts, reducing the risk of long, entangling swarf and improving machining safety. In steel turning applications, controlled chip formation also protects the cutting edge from thermal cycling and mechanical overload, which helps maintain surface integrity on the workpiece. The net effect is a combination of consistent component quality and lower machine downtime due to fewer workpiece rejections or secondary operations.

Practical application advice and handling benefits

Indexing capability and the double-sided layout permit multiple edge uses before regrinding or replacement is needed, supporting a more economical tooling strategy. The insert functions as part of a system consisting of the ISO insert, a matching external holder or boring bar, a support pad/clamping kit and replacement screws; selecting the correct chipbreaker and grade according to workpiece material and machine stability is essential for optimal results. For shops moving between stable and unstable set-ups, this insert offers the flexibility to maintain productivity without sacrificing process safety.

Contact Metav Werkzeuge for compatibility checks and application-specific recommendations on Tungaloy turning inserts; reach the team at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: 6785794
• Manufacturer SKU: TUN6785794
• Model series: ISO turning indexable inserts
• Material: Cemented carbide
• Manufacturer: Tungaloy

Core data

• ISO designation: CNMG120412
• Size: 12 mm
• Thickness: 4.76 mm
• Relief angle: 0°
• Included hole: cylindrical
• Corner radius: 1.2 mm
• Cutting edge angle: 80°
• Grade: T9235

Design & features

• Rhombic insert shape
• Double-sided chipbreaker
• CVD-coated carbide
• Suitable application: turning
• Compatible with standard clamping systems

FAQ

What materials is this insert intended for?
The CNMG120412 T9235 turning insert is formulated primarily for machining steel; the T9235 grade exhibits toughness that suits lower cutting speeds and interrupted cuts common in steel applications.

How does the chipbreaker affect machining?
The double-sided chipbreaker on this indexable insert shapes and breaks chips during cutting, improving chip evacuation and reducing the risk of chip entanglement in interrupted or unstable turning operations.

Is the insert compatible with standard ISO holders?
Compatibility is determined by holder form, relief angle, tolerance class, fastening and insert size/thickness; the ISO designation and cylindrical hole of this insert are intended to fit conventional clamping systems for CNMG-type holders.

Can the insert be indexed to expose fresh edges?
Yes, the insert’s double-sided design allows indexing to a fresh cutting edge, extending usable life before replacement or regrinding is required.

What advantages does the CVD coating provide?
The CVD-coated surface enhances wear resistance and reduces friction at the cutting interface, supporting longer edge life and more consistent performance in steel turning.

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.