CNMG 120408 T5115 Wendeplatten - Tungaloy

CVD-coated T5115 grade combined with the CNMG 80° rhombic geometry and a 0.8 mm nose radius provides a balanced mix of wear resistance and edge stability for cast iron turning; order directly via Metav Werkzeuge or consult our technical advisors for application support.

CNMG 120408 T5115 Tungaloy ISO turning insert — rhombic 80°

CNMG120408 T5115 is a CVD-coated indexable turning insert engineered for productive external and internal turning of cast iron, offering stable cutting edges and consistent chip control in serial machining.

• CVD-coated carbide for long tool life
• Universal grade T5115 for cast iron
• Rhombic CNMG 80° geometry, 0.8 mm radius
• Double-sided chipbreaker with cylindrical hole

Consistent productivity for cast iron turning

The CNMG120408 T5115 indexable insert is designed to deliver repeatable productivity in cast iron applications by combining a CVD-coated surface with a robust carbide substrate. The T5115 grade balances wear resistance and edge stability, so cutting forces remain predictable even under varying feed and speed conditions. This reliability reduces process variation, helping to maintain part tolerances and lowering scrap rates in batch production. The double-sided chipbreaker assists with controlled chip formation, which supports uninterrupted machining and efficient part handling.

Design advantages explained for process optimisation

The rhombic 80° geometry with a 0.8 mm nose radius provides a favourable compromise between strength and form accuracy: the sharper nose improves detail reproduction while the reinforced corner retains integrity during interrupted cuts. The CVD coating increases resistance to abrasive wear and adhesion when machining grey or nodular cast iron, extending the effective tool life. As an indexable insert, the component offers multiple cutting edges; the reversible, double-sided design reduces tool changes and inventory needs, translating into lower unit cost per component in high-throughput environments.

Practical integration into production workflows

Compatibility with toolholders is ensured by ISO CNMG dimensions and the cylindrical hole for secure fastening; selection of a matching external holder or boring bar is governed by form, clearance angle, tolerance class, fastening method, size and thickness. Using this insert in a well-matched holder and optimised cutting parameters enhances surface finish and process stability. For shops seeking immediate stock availability and straightforward replacement, the standardised geometry simplifies procurement and reduces downtime during tool changeovers.

Operator and application benefits in daily use

Beyond raw durability, the insert’s geometry and chipbreaker concept reduce vibration and promote consistent chip evacuation, leading to fewer stoppages and safer handling of swarf. The universal nature of the T5115 grade allows a broad range of cast iron grades to be machined with a single insert type, reducing tool variety in the toolroom. Clear understanding of terms such as CVD-coated (chemical vapour deposition) and indexable insert (reversible insert with defined cutting edges) helps production planners specify the correct component without specialist knowledge.

For production advice, quoting or to order the CNMG 120408 T5115 insert, contact Metav Werkzeuge’s technical sales team at info@metav-werkzeuge.com or call +49 2822 7131930 for tailored recommendations and prompt delivery.

Technical Data

• Article number: 6850127
• Manufacturer SKU: TUN6850127
• SKU: 6850127-Tungaloy
• Model series: ISO turning indexable inserts
• Insert designation: CNMG120408

Core data

• Geometry angle: 80°
• Nose radius: 0.8 mm
• Thickness: 4.76 mm
• Inscribed circle / size: 12 mm
• ISO code: 120408
• Clearance angle: 0°
• Hole style: cylindrical

Special features

• CVD-coated cemented carbide
• Grade T5115 – universal for cast iron
• Rhombic CNMG shape, double-sided chipbreaker
• With cylindrical hole for secure clamping
• ISO-standard insert compatible with external holders and boring bars

FAQ

Which materials is this insert recommended for?
The CNMG120408 T5115 insert is optimised for machining cast iron grades; the T5115 grade provides a balanced combination of wear resistance and edge stability for such applications.

What does the CVD coating provide?
A CVD-coated surface on the carbide substrate increases abrasive wear resistance and reduces adhesion, which enhances tool life and performance during continuous and interrupted turning.

How many cutting edges are available per insert?
As a double-sided, reversible indexable insert, the item offers multiple usable edges before replacement is required, reducing tool change frequency.

Is the insert compatible with standard CNMG holders?
The insert conforms to ISO CNMG dimensions (CNMG120408) and features a cylindrical hole for secure fastening; compatibility with a holder is determined by form, clearance angle, tolerance class, fastening method, size and thickness.

How does the 0.8 mm nose radius affect machining?
A 0.8 mm nose radius balances form accuracy and edge strength, improving surface finish while maintaining robustness for light interruption and finishing passes.

Can this insert be used for internal turning?
Yes; the geometry and chip control characteristics suit both external and internal turning operations when paired with an appropriate boring bar or holder.

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.