SNMG 120408 T5125 Wendeplatten - Tungaloy

Benefit from the combination of CVD‑coated carbide grade T5125 and the robust square 90° geometry for stable interrupted turning in cast iron; the 0° relief and double‑sided chipbreaker support reliable seating and repeatable results. Order directly via Metav Werkzeuge or ask our consultants for holder compatibility and clamping recommendations.

SNMG120408 T5125 – Turning indexable insert (ISO 120408), CVD‑coated carbide, 90° square by Tungaloy

The SNMG120408 T5125 is an ISO‑standard square indexable insert for turning, designed for interrupted cuts and less stable cutting conditions in cast iron using a tough, CVD‑coated carbide grade.

• CVD‑coated carbide grade T5125
• Square 90° geometry for general turning
• 0° relief for stable seating
• Double‑sided insert with cylindrical hole

Consistent cutting in interrupted turning

The CVD‑coated carbide grade T5125 is formulated for durability under interrupted cuts, providing improved resistance to fracture and edge chipping when machining cast iron. The combination of a 0° relief and a solid corner radius produces a stable contact area between insert and holder, which reduces vibration and enhances repeatability. This results in fewer rejects and more predictable cycle times in batch production or remanufacturing.

Robust geometry for precise results

A square, 90° geometry delivers straightforward orientation for external and internal turning operations, while the 0° relief ensures secure seating in the pocket with minimal axial offset. The double‑sided chipbreaker offers controlled chip formation and evacuation under varied cutting depths, improving surface quality without complex tool settings. Where surface finish matters, the stable geometry supports consistent part tolerances and lowers rework rates.

Economy through indexability and edge protection

The double‑sided design increases the number of usable cutting edges per insert, supporting cost‑efficient tool management and fast edge changes. The 0.8 mm corner radius balances edge strength and permissible depth of cut, helping to extend tool life under interrupted conditions. Using a CVD coating improves thermal stability at elevated cutting speeds, so maintenance intervals can be extended and tool change downtime reduced.

Compatibility and selection guidance

As an ISO insert, compatibility is determined by insert form, relief angle, tolerance class, fastening and thickness; the ISO‑standard approach simplifies holder selection. For turning jobs on cast iron where stability is limited, match the T5125 grade with a positive clamping system and a rigid toolpost to exploit the insert’s toughness. Choose the chipbreaker that fits the material and desired surface finish; the double‑sided pattern is versatile for mixed production runs.

Choose Tungaloy quality for demanding cast‑iron turning — contact Metav Werkzeuge for stock status, holder matching and technical advice at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6850254
• SKU: 6850254-Tungaloy
• Model series: ISO indexable turning inserts

Facts

• ISO designation: 120408
• Insert designation: SNMG120408
• Corner radius: 0.8 mm
• Plate thickness: 4.76 mm
• Inscribed size: 12 mm
• Insert angle: 90°
• Relief angle: 0°
• Hole: with cylindrical hole

Special features

• Material: carbide
• Coating / grade: T5125 (CVD‑coated)
• Shape: square
• Chipbreaker: double‑sided
• Typical application: turning (external and internal)
• Suitable for interrupted cuts and less stable cutting conditions
• ISO‑standard compatibility; compatibility determined by form, relief, tolerance, fastening, size and thickness

FAQ

What materials is this insert intended for?
The SNMG120408 T5125 insert is optimised for machining cast iron; the CVD‑coated carbide grade T5125 provides toughness for interrupted cuts commonly encountered when turning cast iron components.

Can the insert be used for both external and internal turning?
Yes, the ISO‑standard square geometry of the SNMG120408 allows application in both external and internal turning operations when paired with a suitable holder and rigid clamping.

How does the 0° relief influence performance?
A 0° relief delivers stable seating in the pocket and reduces axial movement during cutting; combined with the square 90° geometry this enhances repeatability and surface consistency for turned parts.

What advantages does the double‑sided chipbreaker provide?
The double‑sided chipbreaker supports controlled chip formation in a range of cutting conditions, improving evacuation and surface finish while extending the usable life of each insert side.

Which holder characteristics are important for this insert?
Compatibility depends on insert form, relief angle, tolerance class, fastening, size and thickness; a rigid holder and secure clamping are recommended to exploit the toughness of the T5125 grade under interrupted cuts.

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.