CNMA 120404 T5105 Wendeplatten - Tungaloy

Take advantage of the combination of CVD-coated carbide grade T5105, a 0.4 mm nose radius and ISO CNMA geometry for productive, high‑speed turning of cast iron under stable conditions; order via Metav Werkzeuge or consult the sales engineers for application support.

CNMA 120404 T5105 — Turning insert (ISO CNMA) by Tungaloy, CVD‑coated carbide for high‑speed cast iron machining

CNMA120404 T5105 is an ISO‑standard rhombic indexable turning insert designed for external and internal turning applications, optimised for high‑speed machining of cast iron under stable setups

• CVD‑coated carbide for high‑speed machining
• ISO rhombic CNMA geometry, 80° cutting angle
• 0.4 mm nose radius for fine profiles
• Cylindrical through‑hole for secure clamping

Consistent productivity through tailored grade and coating

The combination of the T5105 CVD‑coated carbide and the insert’s geometry delivers reliable performance for continuous turning operations. The chemical vapour deposition layer enhances wear resistance and keeps the cutting edge stable at elevated cutting speeds, which helps maintain longer tool life and consistent component quality. For shops processing cast iron, the mix of coating and substrate reduces flank wear and fosters predictable tool change intervals, supporting efficient production planning.

Predictable machining results from controlled geometry

The CNMA‑format rhombic shape with an 80° cutting angle and 0° clearance creates a stable cutting engagement that benefits both external and internal turning. The 0.4 mm nose radius balances surface finish and edge robustness: small enough for accurate profile work, yet generous enough to resist premature chipping when the setup is rigid. The standardised ISO geometry also means compatibility with a wide range of holders, with the fit determined by form, clearance angle, tolerance class, fastening method, size and thickness.

Mounting, compatibility and clamping guidance for reliable changeovers

This insert features a cylindrical through‑hole which enables secure clamping in holders designed for hole‑fixation. Compatibility depends on the holder’s seat and clamp system; ensure the toolholder matches the insert form, thickness (4.76 mm) and fastening method for repeatable positioning. The insert is supplied in the ISO indexable turning insert family and integrates into a system consisting of an external holder or boring bar, a shim/clamp set and replacement screws, simplifying inventory and changeovers in production environments.

Application advice and selection criteria for best results

Choose the T5105 grade and an appropriate chipbreaker according to workpiece material, cutting mode and machine stability: while this grade is optimised for cast iron and high speeds under stable conditions, different chip control geometries or grades may be preferable for interrupted cuts or less rigid setups. The absence of an integrated chipbreaker in this item places emphasis on matching the right breaker geometry where necessary to ensure safe chip evacuation and surface quality.

Contact Metav Werkzeuge for technical matching, availability and to secure Tungaloy CNMA 120404 T5105 inserts for optimised turning performance

Technical data

• Article number: 6850123
• Manufacturer SKU: TUN6850123
• SKU: 6850123-Tungaloy
• Designation: CNMA120404 T5105 Tungaloy indexable insert

Dimensions & core data

• Inscribed circle / size: 12 mm
• Thickness: 4.76 mm
• Nose radius: 0.4 mm
• Lead / cutting angle: 80°
• Clearance angle: 0°
• Hole: cylindrical through‑hole

Materials & special features

• Substrate: carbide
• Grade / coating: T5105 (CVD‑coated carbide)
• Plate shape: rhombic (CNMA)
• Series: ISO indexable turning inserts
• Application: turning
• Chipbreaker: none

FAQ

What materials is the CNMA120404 T5105 best suited for?
The CNMA120404 T5105 insert is optimised for high‑speed machining of cast iron; the T5105 coating and carbide substrate support stable abrasive wear conditions typical for these materials.

Does the insert include a chipbreaker and how does that affect use?
This CNMA120404 T5105 insert is supplied without an integrated chipbreaker; chip control should therefore be addressed by selecting a suitable breaker geometry or adapting cutting parameters when necessary.

How is the insert clamped in the holder?
The CNMA120404 T5105 features a cylindrical through‑hole for clamping; secure fixation requires a compatible holder and clamp set that matches the insert form, thickness and ISO CNMA seating.

Can the insert be used for internal turning as well as external turning?
Yes, the ISO rhombic CNMA geometry of the CNMA120404 T5105 supports both external and internal turning applications when used with the appropriate boring bar or holder.

What are the dimensional key points to check before fitting the insert?
Verify the insert size (12 mm), thickness (4.76 mm), nose radius (0.4 mm) and the ISO CNMA form to ensure the holder provides correct seating and repeatable 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.