CNMG 120404 T5115 Wendeplatten - Tungaloy

Take advantage of the CVD-coated T5115 carbide grade and the double-sided chipbreaker for consistent chip control and stable cutting. The combination of ISO conformity, precise dimensions and a 0.4 mm corner radius supports secure clamping and repeatable performance on cast iron workpieces. Order directly via Metav Werkzeuge or request guidance from our consultants for holder compatibility and application advice.

CNMG120404 T5115 — ISO turning insert by Tungaloy, rhombic 80° geometry

CNMG120404 T5115 is an ISO rhombic turning insert designed for external and internal turning, optimised for cast iron applications and reliable production use

• ISO rhombic insert CNMG 120404
• CVD-coated carbide grade T5115
• Double-sided chipbreaker for chip control
• 12 mm inscribed circle, 0.4 mm radius

Stable chip control and predictable wear for cast iron machining

The combination of a CVD-coated surface and the T5115 grade provides a predictable balance between wear resistance and edge stability, particularly when machining cast iron. The integrated double-sided chipbreaker reduces the risk of long, entangling chips and supports consistent chip segmentation, which in turn promotes uninterrupted cycle times and reduced secondary operations. This leads to measurable improvements in process reliability and lower scrap rates in batch production.

Precisely defined dimensions for secure clamping and repeatability

The insert follows ISO geometry with a 12 mm inscribed circle and a plate thickness of 4.76 mm, ensuring compatibility with standard CNMG holders. The 0.4 mm corner radius and 0° rake angle contribute to a robust cutting edge that tolerates moderate interruptions while delivering repeatable results. The 80° approach geometry supports stable cutting forces and predictable tool life, making the component well suited to series turning where tool-change consistency matters.

Application versatility and efficient tool usage

As a universal grade for cast iron, this insert adapts to a wide range of turning tasks — from finishing to light roughing — when paired with an appropriate holder and cutting parameters. The carbide substrate combined with the CVD coating reduces flank and crater wear, helping to extend indexable tool life and lower tooling costs per component. Selection of the matching chipbreaker and grade should reflect the chosen cutting speed, feed and workpiece stability to unlock the full efficiency potential.

System compatibility and practical handling notes

Compatibility with clamping systems depends on insert form, free angle, tolerance class, fastening method, size and thickness; ensure the selected CNMG holder matches these parameters. The insert is supplied with a central hole in a cylindrical style for secure fixation. When replacing or setting up the tool, verify torque and seating surfaces to avoid micro-movements that can affect surface finish and tool life. For new applications, trial cuts under controlled conditions are recommended to define stable parameters.

Contact Metav Werkzeuge for tailored application support on the Tungaloy T5115 inserts and assistance with holder compatibility and batch selection

Technical data

• Article number: 6850118
• Manufacturer SKU: TUN6850118
• Seller SKU: 6850118-Tungaloy
• Model series: ISO-Drehwendeschneidplatten

Key dimensions

• Inscribed circle: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.4 mm
• Rake angle: 0°
• Geometry angle: 80°

Features

• Material: Hartmetall
• Grade: T5115 (CVD-coated)
• Shape: rhombic (CNMG)
• Hole: with hole, cylindrical hole
• Chipbreaker: double-sided

FAQ

What materials is this insert suited for?
The T5115 grade and CVD-coated carbide substrate are specified for machining cast iron; the CNMG120404 geometry supports a wide range of turning operations on such materials.

How does the chipbreaker design affect performance?
The double-sided chipbreaker on this indexable insert promotes controlled chip formation and reduced chip length, improving process stability during continuous turning cycles.

Which dimensions ensure compatibility with standard holders?
Key dimensions are a 12 mm inscribed circle and 4.76 mm thickness; these ISO values ensure compatibility with matching CNMG holders when form, free angle and fastening are correctly matched.

Is the insert reversible or single-use?
The insert is double-sided and can be indexed to present a fresh cutting edge, extending effective tool life before disposal.

What should be checked when mounting the insert?
Ensure correct seating, clean contact faces, proper clamping torque and use of the specified screw and clamp to maintain repeatability and avoid micro-movements.

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.