CNMG 120408 T5105 Wendeplatten - Tungaloy

Take advantage of the combination of CVD-coated carbide T5105, CNMG 120408 geometry and a 0.8 mm corner radius for reliable, high-speed turning of cast iron; order the CNMG120408 T5105 turning insert directly via Metav Werkzeuge or ask our consultants if needed

CNMG120408 T5105 — Tungaloy CNMG ISO turning insert for cast iron turning

CNMG120408 T5105 is a rhombic indexable insert developed for high-speed turning operations on cast iron under stable machining conditions

• CVD-coated carbide grade T5105
• Designed for high-speed cast iron turning
• Rhombic CNMG 120408 geometry
• 0.8 mm corner radius, cylindrical hole

Process-stable ISO geometry for consistent productivity

The CNMG-style rhombic geometry with an 80° included angle and 0° clearance offers a predictable contact area that supports stable cutting forces and repeatable results. As an ISO-standard turning insert, it integrates into common toolholder systems where compatibility is defined by form, clearance angle, tolerance class, fastening and plate dimensions. This predictability reduces set-up time and contributes to a more efficient machining process, especially when paired with a matched external holder, clamp set and replacement screws. The result is improved cycle-time consistency and fewer interruptions for requalification.

Coating and grade engineered for long tool life at high speeds

The insert is manufactured as a CVD-coated carbide in the T5105 grade, designed specifically for wear resistance in high-speed turning of cast iron. The CVD coating forms a hard, thermally stable surface that helps resist abrasive wear and reduces edge degradation during elevated cutting speeds. For users migrating from conventional grades, this combination typically extends edge life and maintains dimensional accuracy for longer runs, lowering part cost per component and improving overall process economy.

Design details that support surface finish and edge security

With a 0.8 mm corner radius and a double-sided chipbreaker, the plate balances edge strength and surface quality: the radius helps absorb intermittent cutting loads while the chipbreaker promotes controlled chip formation for cast iron chips. The cylindrical hole ensures reliable locating and clamping in ISO-compatible holders. These design aspects make the insert suitable for both finishing passes that demand surface integrity and heavier light-roughing operations when machine rigidity and process parameters are stable. Where a fine surface is required, the geometry and coating together support a predictable finish without sacrificing tool life.

For genuine Tungaloy T5105 inserts and tailored tooling advice, contact Metav Werkzeuge for technical matching and supply — eMail: info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6850126
• Manufacturer SKU: TUN6850126
• SKU: 6850126-Tungaloy
• Model series: ISO turning indexable inserts
• Material: carbide

Numbers / Core technical data

• Plate size: 12
• Plate thickness: 4.76 mm
• Corner radius: 0.8 mm
• Clearance angle: 0°
• Included angle: 80°
• Hole style: cylindrical hole

Special features / Versions

• Rhombic plate shape (CNMG 120408)
• Double-sided chipbreaker
• CVD-coated carbide grade T5105
• Intended for high-speed cast iron turning
• Compatibility via ISO form, size and thickness

FAQ

What applications suit this insert best?
This Tungaloy CNMG120408 T5105 indexable insert is intended primarily for high-speed turning of cast iron in stable machining setups, offering a balance between wear resistance and surface quality.

How does the T5105 grade influence performance?
The T5105 grade provides a CVD-coated carbide surface that improves abrasive wear resistance and thermal stability, which typically extends useful edge life in higher cutting-speed turning.

Is the insert compatible with standard ISO holders?
Yes — the insert follows the ISO CNMG 120408 designation, so compatibility depends on matching form, clearance angle, tolerance class, fastening method and plate thickness in the holder system.

What are the benefits of the 0.8 mm corner radius?
A 0.8 mm radius increases edge strength and helps to absorb cutting shocks, improving tool security during intermittent engagement and supporting consistent surface finish.

Can this insert be used for finishing and roughing?
The geometry and coating make the insert suitable for finishing passes requiring good surface integrity and for light roughing when machine and setup stability are ensured.

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.