CNMG 120408 T9235 Wendeplatten - Tungaloy

Take advantage of the combination of a CVD‑coated carbide grade (T9235) for reliable edge protection, an ISO CNMG 120408 geometry for broad holder compatibility and a double‑sided chipbreaker for economical indexability — all supporting stable turning in interrupted or unstable conditions. Order the CNMG120408 T9235 turning insert directly via Metav Werkzeuge or ask our consultants if needed.

CNMG120408 T9235 Turning Insert (ISO CNMG), 80° — Tungaloy

The CNMG120408 T9235 is a rhombic ISO turning insert designed for external and internal turning, optimised for steel machining under unstable conditions and stronger interrupted cuts.

• CVD-coated carbide grade T9235
• For steel in unstable, interrupted cuts
• Rhombic CNMG 120408 form, 0.8 mm radius
• Cylindrical hole, 4.76 mm thickness

Increased process stability and predictable wear for turning

The CVD‑coated T9235 grade combines a tough substrate with a protective coating to resist edge chipping during interrupted cutting and in less rigid set‑ups. This results in stable chip formation and more predictable wear behaviour, which reduces unplanned tool changes and contributes to higher overall machine uptime. In practice, the combination of a robust carbide substrate and CVD surface treatment helps maintain cutting edge geometry for longer, delivering a consistent surface finish on steel workpieces even when feed and depth of cut vary.

Compatibility with standard holders and secure clamping

The ISO CNMG geometry (designation CNMG120408) ensures compatibility with a wide range of external holders and boring bars; compatibility is determined by the insert form, clearance angle, tolerance class, fixing method, size and thickness. The rhombic shape with an included angle of 80° and a 0.8 mm corner radius offers a balance between strength and versatility, while the cylindrical hole allows secure mounting and reliable clamping. Using the correct shim and screw with the matching holder retains repeatability and prevents loosening under interrupted cutting.

Practical selection guidance for reliable results

The double‑sided chipbreaker design provides two usable cutting edges per indexable position, improving economy per insert and simplifying tool management. For best results when turning steel, pair the T9235 grade with conservative cutting speeds where machine or workpiece rigidity is limited, and select the chipbreaker variant that matches the desired chip form and cutting conditions. The CVD coating adds oxidation and temperature resistance at the cutting edge, so the insert copes better with heat peaks that occur during intermittent contact.

Operational advantages that save time and cost

Indexability and ease of replacement reduce downtime: when one edge reaches its wear limit, a quick index and reclamp restores cutting performance. The robust grade reduces the likelihood of premature edge failure, lowering scrap risk and repeat machining. Overall, the geometry and grade combination supports a lower cost per component in batch production and diverse turning tasks, while keeping setup straightforward for workshop teams accustomed to ISO‑standard inserts.

For stable, productive turning with proven edge resilience, choose the Tungaloy CNMG120408 T9235 and contact Metav Werkzeuge for application advice and availability: info@metav-werkzeuge.com • +49 2822 7131930

Technical data

• Article number: 6786034
• SKU (system): 6786034-Tungaloy
• Manufacturer SKU: TUN6786034
• Model series: ISO turning indexable inserts
• Designation: CNMG120408

Dimensions & numerical data

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Clearance angle: 0°
• Included angle: 80°

Materials & features

• Material: Carbide
• Coating / grade: CVD‑coated, T9235
• Plate shape: Rhombic
• Hole: with cylindrical hole
• Chipbreaker: double‑sided
• Application: Turning (external and internal)

FAQ

What materials is this insert suitable for?
The CNMG120408 T9235 is formulated for machining steel; the tough T9235 grade performs well at lower cutting speeds and in unstable or interrupted cutting situations.

Can the insert be used for both external and internal turning?
Yes, the ISO CNMG geometry and rhombic shape make the insert suitable for both external turning and internal operations when matched with an appropriate holder.

How many cutting edges are available per insert?
The insert features a double‑sided chipbreaker, providing multiple usable edges per index, which improves economy and reduces changeover time.

What are the key mounting features to check for compatibility?
Compatibility depends on insert form, clearance angle, tolerance class, fixing method, size and thickness; the CNMG120408 has a cylindrical hole and standard ISO dimensions to fit compatible holders.

What advantages does the CVD coating provide on this grade?
The CVD‑coating on the T9235 grade enhances edge protection and heat resistance, reducing edge chipping during interrupted cuts and improving 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.