TNMG 220408 GH330 Wendeplatten - Tungaloy

Take advantage of the combination of GH330 wear resistance, ISO conformity and a compact 0.8 mm corner radius for reliable turning operations; the insert’s triangular form and cylindrical hole ensure straightforward clamping and secure seating in ISO‑compatible holders. Order the TNMG220408 GH330 indexable insert directly via Metav Werkzeuge or ask our consultants if needed.

TNMG220408 GH330 – Tungaloy indexable insert for turning (ISO 220408)

TNMG220408 GH330 is an ISO‑standard triangular indexable insert intended for external and internal turning, designed to match a range of toolholders through its standardised form, tolerance and mounting features.

• ISO‑standard triangle insert TNMG
• GH330 grade for wear resistance
• Double‑sided chipbreaker, cylindrical hole
• 0° rake angle and 0.8 mm corner radius

Increased process reliability through tailored geometry and grade

The GH330 carbide grade, supplied by Tungaloy, combines wear resistance with sufficient toughness to deliver stable cutting-edge performance in many turning applications. The triangular plate shape with a 0.8 mm corner radius provides a predictable contact geometry that stabilises chip formation and supports repeatable surface finish. As an ISO‑standard insert, the component is specified to fit holders that match the form, free angle and tolerance class, reducing setup uncertainty and helping to maintain production throughput.

Clear benefits from the double‑sided chipbreaker and 0° rake

A double‑sided chipbreaker allows economical indexing and consistent chip control over multiple positions, which reduces downtime for insert changes. The nominal 0° rake angle moderates cutting forces and supports versatile operation across various turning strategies. The combination of chip control and neutral rake is particularly beneficial where stable machining conditions are prioritised over aggressive material removal rates, leading to lower tool‑related variability and improved cycle stability.

Compatibility guidance for straightforward integration into tool systems

Compatibility is determined by insert form, free angle, tolerance class, mounting and size. The triangular TNMG form and the presence of a cylindrical locating hole ensure secure clamping in ISO‑compliant holders and boring bars. Selection of a matching holder with the correct pocket geometry and screw/clamping set is essential; the system typically comprises the ISO insert, a corresponding external holder or boring bar, backing pad/clamp set and replacement screws. This modular setup enables predictable repeatability across tool changes.

Material and application profile explained for practical decisions

Made of cemented carbide, the insert is intended for turning operations where a balanced combination of wear resistance and toughness is required. The Tungaloy grade integrates optimised microstructure and edge stability to extend cutting life under typical turning loads. For applications requiring different surface outcomes or higher thermal resilience, tool parameters and cutting data should be adjusted to match the grade characteristics and the workpiece material, with the chipbreaker and corner radius chosen according to the desired finish and stability.

For robust, repeatable turning results with Tungaloy’s GH330 grade, contact Metav Werkzeuge for tailored advice on holder compatibility and fast supply; Metav Werkzeuge’s consultants are available to support selection and delivery.

Technical Data

• Article number: 6808615
• Manufacturer SKU: TUN6808615
• SKU: 6808615-Tungaloy
• Model series: ISO-Drehwendeschneidplatten

Facts

• Angle: 60°
• Size: 22
• Corner radius: 0.8 mm
• Rake angle: 0°
• Hole style: cylindrical

Special features

• Material: Hartmetall (cemented carbide)
• Grade: GH330 (Tungaloy)
• Plate form: triangular
• Chipbreaker: double-sided
• With hole: yes
• Intended application: Drehen (turning)

FAQ

What holders are compatible with this insert?
Compatibility depends on the holder matching the TNMG form, free angle, tolerance class, size and mounting method; the TNMG220408 GH330 fits ISO‑compatible TNMG pockets with a cylindrical locating hole.

Is the insert indexable on both sides?
Yes, the double‑sided chipbreaker allows indexing and use of multiple cutting positions on the same insert, which supports economical tool life management for the TNMG series.

Which materials is the GH330 grade suited for?
The GH330 grade is a balanced Tungaloy carbide grade designed to combine wear resistance and toughness for general turning tasks; actual cutting data should be selected according to the workpiece material and machining conditions.

How does the 0.8 mm corner radius affect surface finish?
A 0.8 mm corner radius offers a compromise between edge strength and the achievable surface finish, improving edge stability on interrupted cuts while supporting acceptable surface quality in routine turning.

What is the article number and SKU for ordering?
The article number is 6808615 and the manufacturer SKU is TUN6808615; the market SKU appears as 6808615‑Tungaloy.

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.