CNMG 120408 T5125 Wendeplatten - Tungaloy

Combine proven wear resistance with reliable indexing and straightforward holder compatibility to keep turning operations productive and predictable; take advantage of the tough T5125 grade for interrupted cuts and secure chip control. Order the insert directly via Metav Werkzeuge or consult the specialists for application guidance.

CNMG120408 T5125 — Tungaloy turning indexable insert, CVD‑coated carbide

A CNMG120408 T5125 indexable insert designed for ISO‑standard turning, optimised for cast iron under interrupted or less stable cutting conditions.

• ISO‑standard CNMG geometry for universal turning
• CVD-coated carbide T5125 for cast iron applications
• Double-sided chipbreaker for interrupted cuts

Maximised productivity when turning cast iron

The CVD‑coated carbide T5125 grade offers a balance between toughness and wear resistance that favours productivity in interrupted cuts and less rigid set‑ups. As a CVD‑coated carbide insert with a focus on stability, it reduces the risk of premature edge failure while maintaining consistent dimensional control, which translates into fewer indexings and lower tool‑change frequency. This performance yields tangible efficiency gains on medium‑ to high‑volume turning tasks and supports predictable cycle times on repeat components.

Reliable fit and consistent indexing for secure machining

Designed in the ISO series and presented in a rhombic form with an included angle of 80°, the insert features a corner radius 0.8 mm and a 4.76 mm thickness that together ensure stable seating and repeatable clamping. The double-sided chipbreaker and central cylindrical hole enable straightforward mounting and secure retention in compatible holders; compatibility depends on form, clearance, tolerance class, fastening method, size and thickness. The standardised geometry supports interchangeability across a broad range of external holders and boring bars, helping to simplify tool inventory and reduce set‑up time.

Practical application advice and selection guidance

Suitable for external and internal turning, this indexable insert performs best when matched to the appropriate chipbreaker and the turning strategy for the workpiece material. The tough nature of the grade makes it particularly effective on cast iron where interrupted cuts occur or when machine rigidity is limited. The chip control characteristics lower the likelihood of built‑up edge and improve surface finish consistency, resulting in extended tool life and fewer interruptions. When in doubt about holder compatibility or the ideal chipbreaker, consult the technical data provided or request application support to ensure the chosen insert meets process demands.

Contact Metav Werkzeuge for tailored application advice on Tungaloy CNMG120408 T5125 inserts or to confirm current availability; email info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: 6850133
• Manufacturer SKU: TUN6850133
• SKU: 6850133-Tungaloy
• Manufacturer: Tungaloy

Facts

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

Special features

• Material: carbide
• Coating: CVD‑coated
• Grade: T5125
• Shape: rhombic (CNMG)
• Hole: with central cylindrical hole
• Chipbreaker: double‑sided
• Intended application: turning (external and internal)
• System: ISO turning indexable insert series

FAQ

Is this insert suitable for machining cast iron?
The CNMG120408 T5125 insert from Tungaloy is specifically formulated for cast iron, offering toughness for interrupted cuts and stable chip formation in such materials.

Can the insert be used for both external and internal turning?
Yes, the ISO‑standard geometry and central hole allow the insert to be used in appropriate external holders and boring bars for internal turning when the holder is compatible.

What does the T5125 grade offer compared with general‑purpose grades?
T5125 is a tougher, CVD‑coated carbide grade intended for less stable cutting conditions and interrupted cuts; it favours edge protection and consistent performance on cast iron.

How does the double‑sided chipbreaker affect performance?
The double‑sided chipbreaker provides repeatable chip control and allows both sides of the insert to be used, increasing usable life before replacement.

Which dimensions are critical to check for holder compatibility?
Verify form (CNMG), plate size (12 mm), thickness (4.76 mm), corner radius (0.8 mm), clearance angle (0°) and the presence of the central cylindrical hole to ensure correct fitment.

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.