DNGA 150412 LX21 Wendeplatten - Tungaloy

Take advantage of the combination of robust LX21 grade performance, precise 55° rhombic geometry, and a secure clamping concept for uninterrupted turning operations; order directly via Metav Werkzeuge or contact our consultants for tailored advice.

DNGA 150412 LX21 ISO turning insert — Tungaloy

The DNGA150412 LX21 is an ISO-standard indexable insert engineered for external and internal turning, combining a 55° rhombic geometry with a 1.2 mm nose radius for reliable finishing and semi-finishing operations

• ISO 55° rhombic geometry for versatile turning
• LX21 grade for wear resistance and edge stability
• Carbide substrate with 1.2 mm nose radius
• Cylindrical hole for secure clamping, 4.76 mm thick

Proven geometry for consistent machining

The insert’s 55° rhombic geometry provides a balance between accessibility and cutting strength: the geometry enables entry into confined features while maintaining a load-bearing face that reduces vibration. This shape is particularly effective for general-purpose turning where both profile accuracy and surface finish matter. The design supports both external and internal operations and, when paired with an appropriate holder, contributes to stable chip formation and predictable tool life.

Grade and substrate engineered for productivity

The LX21 designation denotes a Tungaloy cutting grade optimised for turning, focusing on wear resistance, edge stability and sufficient toughness for a broad range of steels and alloyed materials. Manufactured on a carbide substrate, the grade is intended to extend periods between index changes and reduce unplanned tool interventions. For production environments where uptime and repeatability are critical, the combined effect of substrate and grade results in a measurable improvement in process reliability and cost-efficiency.

Compatibility and secure clamping for series production

As an ISO turning insert, the component is compatible with ISO holders that match the insert form, relief angle, tolerance class, fastening method, size and thickness. The central cylindrical hole ensures repeatable seating and positive clamping with standard screws and clamps, while the 4.76 mm thickness enhances rigidity in heavy or interrupted cuts. The item’s specification should be checked against the toolholder’s seat and screw geometry to guarantee proper fit and to preserve repeatable concentricity in serial machining.

Practical selection and set-up guidance for best results

For finishing passes where surface quality is paramount, the 1.2 mm nose radius provides a good compromise between detail reproduction and edge strength; larger radii improve tool life but reduce access to tight profiles. The insert is supplied without a chipbreaker, so a compatible chip control strategy should be selected at the holder level according to material and cutting conditions. Where uncertainty exists about holder choice, clamping torque or recommended cutting parameters, consultation with Metav Werkzeuge ensures an application-optimised set-up and helps to avoid costly trial-and-error.

For secure, high-productivity turning with Tungaloy’s LX21 grade, contact Metav Werkzeuge for expert application advice and rapid supply — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Manufacturer article number: 6803172
• SKU: 6803172-Tungaloy
• Model series: ISO turning inserts
• Designation: DNGA150412
• Application: Turning
• Shape: Rhombic 55°

Facts

• Nose radius: 1.2 mm
• Insert size: 15 mm
• Thickness: 4.76 mm
• Relief angle: 0°
• Hole style: cylindrical (with hole)
• Chipbreaker: none

Special features

• Material: carbide
• Grade: LX21 (Tungaloy)
• Geometry: 55° rhombic
• Compatibility: ISO-standard holders
• Intended use: external and internal turning

FAQ

What materials is this insert intended to machine?
The LX21 Tungaloy grade is designed for turning a broad range of steels and alloyed materials; the carbide substrate and grade combination deliver wear resistance and edge stability in typical turning applications.

How does the 55° geometry affect machining performance?
A 55° rhombic geometry provides a balance between cutting edge strength and access to profiles, improving surface finish and stability in both external and internal turning tasks.

Is this insert supplied with a chipbreaker?
No, the insert is supplied without a chipbreaker; chip control should be achieved via holder selection or process parameters suited to the work material and operation.

Which holders are compatible with this insert?
Compatibility is determined by the ISO form, relief angle (0°), tolerance class, fastening method and insert thickness; ensure the holder seat matches the DNGA150412 specification for correct clamping.

What is the recommended use of the 1.2 mm nose radius?
The 1.2 mm nose radius is suitable for finishing and semi-finishing operations where a compromise between surface quality and edge robustness is required.

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.