CNMG 120404 T9225 Wendeplatten - Tungaloy

Take advantage of the combination of reliable edge life, a universal T9225 grade and ISO compatibility for consistent turning performance; order directly via Metav Werkzeuge or consult the sales engineers for matching holders and feed recommendations.

CNMG 120404 T9225 turning insert by Tungaloy — CVD‑coated carbide, 80° rhombic

CNMG 120404 T9225 is an ISO‑standard rhombic indexable insert designed for external and internal turning applications where robustness and versatility are required

• CNMG 120404 geometry, 80° rhombic
• CVD‑coated carbide grade T9225
• 0.4 mm corner radius for reliable edge strength
• Double‑sided chipbreaker with cylindrical hole

Consistent metal‑cutting performance where interruptions occur

The T9225 grade is a CVD‑coated carbide developed as a robust universal solution for medium to heavy steel machining. CVD (chemical vapour deposition) provides a hard, wear‑resistant top layer that improves flank and crater resistance under elevated temperatures; the result is longer edge life and more predictable tool change intervals. For operations with changing engagement or light interruptions, this coating‑and‑substrate combination offers the compromise between toughness and wear resistance that supports productive machining cycles while maintaining surface quality.

Geometry that stabilises cutting and improves finish

The CNMG geometry with an 80° rhombic included angle and a 0° relief produces a stable cutting condition that reduces deflection on overhangs and long tool set‑ups. A 0.4 mm corner radius balances edge strength and finish capability: small enough to achieve acceptable surface roughness, yet large enough to withstand shocks. The double‑sided chipbreaker design helps to control chip form in a wide range of feeds and depths, lowering the risk of built‑up edge and improving repeatability across batches. ISO compatibility ensures straightforward matching to a broad range of external holders and boring bars.

Economical operation through indexable design and material choice

Reversible inserts cut tooling cost per part by offering multiple indexed cutting edges; the rhombic, double‑sided format provides up to four effective edges per insert rotation. Coupled with the CVD‑coated carbide substrate, this insert reduces the frequency of replacements and minimises unscheduled downtime. For production environments where tool life and throughput are key performance indicators, the combination of a durable grade and an indexable format supports lower total tooling costs and steadier cycle times.

Selection and system compatibility guidance for reliable results

Compatibility with a holder depends on form, relief angle, tolerance class, attachment type, size and thickness; the ISO designation and the CNMG 120404 geometry simplify selection in standard tool systems. The insert features a cylindrical hole for secure clamping and a plate thickness of 4.76 mm, which contributes to rigidity in the assembly. For optimised results, match the chipbreaker and grade to the workpiece material and the intended machining strategy. If further technical data or cutting parameters are required, the Metav Werkzeuge technical team can provide tailored recommendations and cutting‑data charts.

Contact Metav Werkzeuge for application‑specific advice on the Tungaloy T9225 grade and assistance in selecting compatible holders to ensure efficient, repeatable turning results.

Technical data

• Manufacturer article number: 6781242
• SKU: 6781242-Tungaloy
• Manufacturer SKU: TUN6781242
• Model series: ISO‑Drehwendeschneidplatten
• Material: carbide
• Coating/type: CVD‑coated

Facts

• Insert size: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 0.4 mm
• Included angle: 80°
• Relief angle: 0°

Special features

• ISO designation: CNMG120404
• Shape: rhombic
• Hole: with hole — cylindrical hole
• Chipbreaker: double‑sided
• Grade: T9225 — robust universal grade for medium to heavy steel turning
• Application: turning
• Compatible system: ISO turning holders and boring bars

FAQ

Which materials are best machined with this insert?
The CNMG 120404 T9225 insert is intended primarily for steel machining, offering robustness for medium to heavy cuts and suitability for lightly interrupted cuts due to the tougher T9225 grade and CVD coating.

Can the insert withstand interrupted cuts or variable engagement?
Yes. The T9225 grade provides increased toughness and is specified for applications with changing engagement or light interruptions, giving more reliable edge life under such conditions.

How many usable edges does the insert provide?
As a double‑sided rhombic insert, the CNMG 120404 format offers multiple indexed cutting edges; indexing strategy depends on wear but the reversible design reduces cost per cutting edge compared with single‑edge solutions.

What holder features are required for secure clamping?
A compatible ISO turning holder or boring bar must match the CNMG form, plate thickness (4.76 mm), hole style (cylindrical) and tolerance class; correct clamping torque and support pads are essential for stable cutting.

Is the coating suitable for high‑speed finishing as well as roughing?
The CVD coating on the T9225 grade enhances wear resistance and is effective across a range of cutting speeds; performance for finishing versus roughing will depend on feed, depth of cut and workpiece material.

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.