CNMG 120404 T5125 Wendeplatten - Tungaloy

Take advantage of a CVD-coated cemented carbide grade that is engineered for interrupted cuts and less stable turning conditions, combined with ISO conformity and compact dimensions for reliable tool life and predictable performance; order directly via Metav Werkzeuge or consult the team for holder compatibility and application advice.

CNMG 120404 T5125 — ISO indexable turning insert for turning (Tungaloy)

CNMG120404 T5125 is an ISO‑format indexable insert designed for external and internal turning, offering a tougher CVD‑coated cemented carbide grade for cast iron and interrupted cuts

• CVD-coated cemented carbide grade T5125
• Optimised for cast iron and interrupted cuts
• Double-sided chipbreaker with cylindrical hole
• ISO CNMG 120404, 0° relief, 80° approach

Consistent performance where interruptions and instabilities occur

The combination of a CVD coating and a tougher T5125 cemented carbide matrix reduces brittle failure under interrupted cutting and when machine or workpiece rigidity is limited. This grade is specifically formulated to maintain edge integrity during cyclical loads, so the cutting edge remains usable for longer periods and edge breakage is less likely. In practice, this means fewer unplanned tool changes, more predictable cycle times and improved productivity when machining cast iron components in short‑chipped or interrupted operations. The rhombic CNMG geometry further assists in maintaining a controlled cutting action on external and internal turning profiles.

Secure fit and clear compatibility for repeatable results

Compatibility with the toolholder is determined by the insert form, relief angle, tolerance class, attachment method, size and thickness. For the CNMG 120404 T5125 insert this means selecting a holder that matches the ISO CNMG form, a 0° relief specification and the 12 mm seat dimensions to ensure correct clamping and repeatability. The recommended system setup comprises the insert, a matched outside holder or boring bar, a shim/locking set and the appropriate clamping screw. When this system is assembled according to ISO guidelines, repeatable positioning and reduced vibration help to secure surface finish and dimensional stability across production runs.

Practical design that aids workshop handling and process efficiency

The insert’s double-sided chipbreaker and cylindrical hole allow for flexible indexing and secure fastening, while the 4.76 mm plate thickness and 0.4 mm corner radius balance strength with accessibility in confined geometries. These characteristics support a broad spectrum of turning tasks: from roughing interrupted cast iron sections to finishing passes where controlled chip formation matters. The 80° approach angle provides a favourable cutting force direction for common turning operations, and the standardised ISO format simplifies stocking and tool management across different machines and cell layouts. Product labelling and manufacturer SKU support traceability in procurement and inventory systems.

For technical selection and to confirm holder compatibility for the Tungaloy CNMG 120404 T5125, contact Metav Werkzeuge – email info@metav-werkzeuge.com or call +49 2822 7131930 for application advice and ordering support

Technical data

• Article number: 6852906
• Manufacturer SKU: TUN6852906
• SKU: 6852906-Tungaloy
• Designation: CNMG120404

Facts

• Grade: T5125
• Cutting material: cemented carbide
• Coating: CVD
• Insert size: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 0.4 mm
• Approach/lead angle: 80°
• Relief angle: 0°

Special features

• Rhombic insert (CNMG)
• Double-sided chipbreaker
• Cylindrical hole
• ISO indexable turning insert
• Optimised for cast iron and interrupted cuts
• System components: insert, holder/boring bar, shim/locking set, spare screws
• Application: turning (external and internal)

FAQ

What materials is this insert intended for?
The CNMG120404 T5125 insert is optimised for machining cast iron, particularly in interrupted cuts and less rigid setups, while standard ISO practice recommends selecting alternative grades for different substrate materials.

Can this insert be used for both external and internal turning?
Yes, the ISO‑format CNMG geometry is suitable for both external and internal turning; the system should include a matching holder or boring bar, appropriate shim/locking set and fastening screw.

How is holder compatibility ensured?
Compatibility is determined by insert form, relief angle, tolerance class, attachment method, size and thickness; confirming these parameters against the holder specification secures correct clamping and repeatability.

What does the T5125 designation indicate?
T5125 denotes a tougher CVD‑coated cemented carbide grade from Tungaloy designed to improve resistance to edge chipping under interrupted cuts and in less stable machining conditions.

Is the chipbreaker single or double sided?
The insert features a double‑sided chipbreaker together with a cylindrical hole for secure fixing and flexible indexing.

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.