TNMG 220408 T9225 Wendeplatten - Tungaloy

Take advantage of the CVD-coated cemented carbide grade and the ISO‑standard geometry to boost process stability and tool life in medium to heavy steel turning. Order original Tungaloy inserts directly via Metav Werkzeuge or ask the consultants for matching holders and clamping solutions.

TNMG 220408 T9225 – ISO turning insert for medium to heavy steel machining, by Tungaloy

A TNMG220408 T9225 indexable insert engineered for external and internal turning, offering a robust universal grade for interrupted cuts and varying engagement conditions

• ISO triangular insert TNMG 220408 with 60° geometry
• CVD-coated carbide grade T9225 for steel machining
• Double-sided insert with 0.8 mm corner radius
• Cylindrical central hole for secure clamping

Increased process stability for medium to heavy steel turning

The combination of a CVD-coated cemented carbide substrate and the T9225 grade delivers a balance of toughness and wear resistance tailored for medium to heavy steel machining. This composition promotes stable chip formation, reduces edge chipping under interrupted cuts and extends usable tool life, which in turn improves machine uptime and reduces tool change frequency. Compared with uncoated grades, the coated surface also helps maintain cutting-edge integrity at elevated cutting speeds and varying engagement conditions.

Secure seating and straightforward compatibility with ISO holders

The triangular geometry with a 60° included angle and a cylindrical central hole ensures reliable clamping in standard ISO toolholders. Compatibility depends on the insert form, relief angle, tolerance class, fastening method, size and thickness; selecting a matching holder minimises setup variability and vibration. The 0° relief angle and precise tolerance classification mean predictable orientation and reproducible cutting behaviour, simplifying tool setup and replacement in production environments.

Higher productivity through indexability and robust edge design

As a double-sided indexable insert with a 0.8 mm corner radius, this component provides two cutting edges per face and a compromise between finish and strength. The geometry supports efficient material removal while preserving surface quality on the workpiece. Indexability reduces inventory variety and downtime: when an edge wears, the plate is rotated or flipped, restoring cutting performance without the need for regrinding. The net effect is lower cost per part and more consistent batch-to-batch results.

Practical selection advice and application focus

Designed primarily for turning operations, the insert is suited to both external and internal turning where moderate to heavy engagement and occasional interruptions occur. Choose the chipbreaker and grade combination aligned with the workpiece material and the machining stability available on the machine. For components needing a balance of edge strength and surface finish, the described insert and grade combination is a pragmatic first choice; for extreme finishing or very hard materials, consider alternative grades or geometries matched to the specific application.

For technical matching, availability of original Tungaloy inserts and holder recommendations please contact Metav Werkzeuge – the team will advise on holder compatibility, recommended cutting parameters and delivery options via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6780892

• SKU: 6780892-Tungaloy

• Manufacturer SKU: TUN6780892

• Model series: ISO turning inserts

• Designation: TNMG220408 T9225 Tungaloy insert

Facts

• Cutting angle: 60°

• Insert size: 22

• Corner radius: 0.8 mm

• Relief angle: 0°

• Hole: with hole (cylindrical)

Special features

• Material: cemented carbide

• Coating/grade: T9225 (CVD-coated)

• Chipbreaker: double-sided

• Geometry: triangular insert, 60° included angle

• Application: external and internal turning on steel

FAQ

What materials is this insert best suited for?
The Tungaloy TNMG220408 T9225 insert is optimised for steel machining, with the T9225 CVD coating providing toughness for medium to heavy cutting conditions.

How does the cylindrical hole affect clamping?
A cylindrical central hole offers consistent seating and secure clamping in compatible ISO holders, improving repeatability for the TNMG220408 indexable insert.

How many usable edges does the insert provide?
As a double-sided triangular insert, the plate offers multiple indexed cutting edges, enabling quick rotation to a fresh edge and reducing tool change downtime.

Is this insert suitable for interrupted cuts?
Yes, the robust T9225 grade and the insert geometry are designed to tolerate interrupted cuts and varying engagement conditions during turning operations.

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.