CNMA 120404 T5125 Wendeplatten - Tungaloy

Take advantage of the combination of an ISO‑standard rhombic geometry, a CVD‑coated carbide grade (T5125) and a compact 0.4 mm corner to secure reliable performance when turning cast iron under interrupted conditions; order the insert directly via Metav Werkzeuge or ask our consultants if needed.

CNMA 120404 T5125 CNMA120404 — Tungaloy turning insert, CVD‑coated carbide

The CNMA120404 T5125 is a rhombic ISO turning insert for external and internal turning, designed for cast iron applications and intermittent cutting situations.

• CVD-coated carbide grade T5125
• Optimised for cast iron and interrupted cuts
• Rhombic ISO CNMA120404, 80° cutting geometry
• 0.4 mm corner radius with cylindrical hole

Maximised edge life through a tougher coating and substrate

The combination of a CVD‑coated layer and a wear‑resistant carbide substrate provides a durable cutting edge that copes with fluctuating forces in interrupted machining. The tougher grade T5125 is formulated to maintain edge integrity when cutting cast iron under unstable conditions, which translates into fewer unplanned indexings and clearer process windows. For shops seeking predictable tool life, this cutting grade reduces risk of premature flank failure while keeping cutting performance consistent.

Secure mounting and universal ISO fit for straightforward tool management

The rhombic ISO CNMA120404 form and the presence of a cylindrical hole ensure stable clamping and repeatable positioning in compatible tool holders. The 80° cutting geometry supports standard external and internal turning set ups without bespoke fixtures, simplifying tool inventory and holder selection. Compatibility depends on holder form, relief angle, tolerance class, clamping method, size and thickness, so the standardised geometry aids rapid replacement and consistent seating during tool changes.

Geometry tailored for interrupted cuts without a chipbreaker

With a 0.4 mm corner radius and no chipbreaker, the insert is intended for operations where robust edge strength and uncomplicated chip flow are priorities. The lack of an integrated chipbreaker is compensated by the T5125 grade’s resilience, making this insert suitable for short, interrupted engagements and less rigid workholding. For turning tasks where chip formation is managed by process parameters or external chip control, the simple top geometry helps avoid fragile cutting edges.

Practical advantages for workshop productivity and application flexibility

As an indexable insert in the ISO turning family, the component supports quick replacement, straightforward stock management and predictable machining outcomes. The 4.76 mm plate thickness and standardised dimensions are easy to plan into tool setups, while the material pairing emphasises productivity when machining cast iron in less stable conditions. For manufacturers seeking a balance between durability and operational simplicity, this insert delivers a focused solution without complex auxiliary requirements.

Contact Metav Werkzeuge for tailored application advice and to request the Tungaloy CNMA120404 T5125 insert; technical queries and orders can be sent to info@metav-werkzeuge.com or discussed by phone at +49 2822 7131930

Technical data

• Article number: 6850125
• Manufacturer SKU: TUN6850125
• Label / Name: CNMA120404 T5125 Tungaloy turning insert

Core specifications

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.4 mm
• Relief angle: 0°
• Cutting angle: 80°
• Hole: with cylindrical hole

Features and applications

• Coating: CVD
• Grade: T5125
• Substrate: carbide
• Shape: rhombic
• Chipbreaker: none
• Typical application: external and internal turning
• Suited materials: cast iron (interrupted cuts)
• Series: ISO turning inserts

FAQ

What materials is this insert suitable for? The CNMA120404 T5125 insert is formulated for cast iron work, especially where interrupted cuts or less stable conditions occur.

Does the insert include a chipbreaker? No, the insert is supplied without a chipbreaker; its T5125 grade and geometry are intended to provide edge robustness for interrupted operations.

Which holders are compatible with this ISO insert? Compatibility requires matching the rhombic form, relief angle, tolerance class, clamping method, size and thickness; use holders specified for ISO CNMA120404 inserts.

How does the 0.4 mm corner radius affect performance? A 0.4 mm radius increases edge strength and reduces susceptibility to chipping during interrupted engagements while offering a balance between edge robustness and surface finish.

Can this insert be used for both external and internal turning? Yes, the rhombic ISO form and 80° cutting geometry make it suitable for both external and internal turning tasks.

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.