TPGT 090204 GH330 Wendeplatten - Tungaloy

Take advantage of ISO compatibility, the GH330 Tungaloy grade and a compact 0.4 mm corner radius to achieve predictable tool life and stable chip control in turning operations; order directly via Metav Werkzeuge or contact our consultants for holder matching and application advice.

TPGT090204 GH330 ISO triangular indexable insert for turning — Tungaloy

The TPGT090204 GH330 is an ISO-form triangular indexable turning insert, designed for external and internal turning where consistent cutting-edge stability and dependable wear resistance are required.

• ISO triangular insert, 60° geometry
• GH330 grade for wear resistance and toughness
• Centre hole with cylindrical form and countersink
• 0.4 mm corner radius, single-sided chipbreaker
• Carbide substrate, 2.38 mm thickness

Longer tool life through a balanced carbide grade

The combination of the GH330 Tungaloy grade with a carbide substrate delivers a deliberate balance of wear resistance and toughness, which translates into extended tool life and fewer interruptions for index changes. The grade complements the insert geometry to support a stable cutting edge, reducing unexpected flank wear and sustaining productivity over longer series. This results in lower tooling consumption per part and more predictable process windows on CNC lathes.

Stable chip control for reliable surface finish

A single-sided chipbreaker on a triangular insert with a 60° included angle promotes controlled chip formation under a variety of turning conditions. Predictable chip flow minimises recutting and helps maintain a consistent metallurgical interaction at the cut, supporting repeatable surface quality. In practice, this improves first-pass yields and lowers rework rates, which is particularly valuable in precision turning operations.

Fast, repeatable clamping and simple compatibility checks

The insert’s centre hole with a cylindrical form and one-sided countersink (40°–60°) enables secure, repeatable clamping in standard ISO holders. Compatibility with a given holder is determined by the insert form, relief angle, tolerance class, fixing method, size and thickness, so matching those parameters ensures correct seating and repeatable tool offsets. Clear identification of these elements reduces setup time and the potential for assembly errors.

Size, geometry and relief angle for machining stability

The 09 size, a 0.4 mm corner radius and a 60° triangle geometry make the insert suitable for a range of finishing and semi-finishing tasks in turning. The specified 11° relief angle reduces rubbing and helps preserve the cutting edge under interrupted cuts, contributing to stable cutting forces and improved dimensional consistency on the workpiece. These geometry choices are aimed at balancing edge strength with cutting performance.

Robust system approach for industrial use

This insert is intended to be used as part of a system: ISO indexable insert, suitable external holder or boring bar, a supporting shim/clamping set and replacement screws. Treating the tool as a system promotes process reliability: correct holder selection and secure clamping lead to stable vibrations, consistent chip formation and repeatable part tolerances. Systematic planning reduces downtime during index changes and tool replacements.

Practical selection guidance for turning applications

For efficient application, select the single-sided chipbreaker and the GH330 grade in relation to workpiece material, machining method and machine stability. The 2.38 mm thickness and carbide construction provide the mechanical basis for reliable cutting performance, while the chipbreaker and grade determine wear behaviour and edge strength. Where frequent index changes are costly, the GH330 balance of toughness and wear resistance helps lower total cost per part.

Request holder and application matching from Metav Werkzeuge for this Tungaloy insert — our specialists will advise on the correct clamping kit and machining parameters to suit the intended turning task.

Technical Data

• Manufacturer article number: 6808898
• SKU: 6808898-Tungaloy
• Manufacturer SKU: TUN6808898
• Model series: ISO-Drehwendeschneidplatten
• Material: carbide
• Application: turning

Numbers / Core technical data

• Size designation: 09
• Thickness: 2.38 mm
• Corner radius: 0.4 mm
• Relief angle: 11°
• Included angle: 60°
• Hole: with hole

Special features

• Grade: GH330 (Tungaloy)
• Chipbreaker: single-sided
• Plate form: triangular
• Hole style: cylindrical hole + one-sided countersink (40°–60°)
• System components: insert, suitable external holder or boring bar, shim/clamping set, replacement screws
• ISO conformity for form and mounting compatibility

FAQ

Which clamping types are compatible with this insert?
The insert uses a cylindrical centre hole with a one-sided countersink (40°–60°) and is compatible with ISO triangular holders and boring bars that match the insert form, relief angle, size and thickness; the system typically comprises the insert, an appropriate holder, shim/clamping set and replacement screws.

What does the GH330 grade offer compared with other grades?
The GH330 Tungaloy grade combines wear resistance and toughness, extending tool life while maintaining cutting-edge stability; this makes the insert suitable for operations where a balanced performance between durability and edge strength is required.

How does the 0.4 mm corner radius affect machining?
A 0.4 mm corner radius increases edge strength and helps produce a robust cut with reduced risk of chipping on interrupted cuts, improving dimensional stability and surface finish in many turning applications.

Is the insert suitable for internal and external turning?
Yes, the triangular 60° geometry and ISO form allow the insert to be used for both external and internal turning when paired with the correct holder and clamping components.

What dimensions should be matched when choosing a holder?
Match the insert form, relief angle (11°), tolerance class, fixing method, size (09) and thickness (2.38 mm) to the holder specifications to ensure correct seating and repeatable tool offsets.

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.