CNGA 120404 LX21 Wendeplatten - Tungaloy

Take advantage of the combination of ISO-standard geometry, the LX21 carbide grade and a 0.4 mm corner radius to secure stable chip formation and prolonged edge life in turning operations; order the CNGA120404 LX21 insert directly via Metav Werkzeuge or ask our consultants for application advice.

CNGA120404 LX21 CNGA turning insert for turning — Tungaloy, 0° relief, 0.4 mm radius

CNGA120404 LX21 is an ISO-standard rhombic turning insert intended for general external and internal turning, offering a balanced combination of wear resistance and edge stability.

• ISO rhombic insert CNGA 120404
• Tungaloy LX21 carbide grade for wear resistance
• 0.4 mm corner radius for controlled chip formation
• 0° relief and cylindrical hole for secure clamping

Higher output through standardised geometry and consistent results

The rhombic, ISO-standard form delivers predictable seating in compatible holders, which simplifies tool inventory and reduces set-up time. The standardised shape and tolerances ensure repeatable seating and cutting angles across batches, leading to more consistent part quality and fewer scrapped components. Where frequent tool changes occur, the combination of standard plate form and a reliable centre hole helps to maintain cycle times and reduces interruptions in production, improving overall throughput.

Balanced grade and material give longer tool life and process security

The LX21 grade, produced by Tungaloy, pairs a tough substrate with wear-resistant properties to suit a broad range of turning conditions. Manufactured from carbide, the grade is designed to balance wear resistance and edge toughness, which reduces the risk of premature chipping under varying cut depths or interrupted cuts. This balance means fewer indexings and a lower cost per part in medium- to high-volume turning where consistent edge performance is desirable.

Stable clamping and neutral cutting geometry for predictable chip control

The insert’s 0° relief geometry creates a neutral cutting orientation that can be beneficial for stable cutting forces in many turning set-ups. The presence of a cylindrical hole supports positive locating in the toolholder and enables secure clamping, which is especially useful when machining with heavier feeds or interrupted cuts. The combination of the 0.4 mm corner radius and the 4.76 mm thickness contributes to improved resistance against edge deformation while maintaining the ability to generate controlled chip formation under common feed ranges.

Process-focused design that supports productivity and surface quality

Supplied without a dedicated chipbreaker, the insert’s plain cutting edge allows flexibility in adapting chip control through the combination of holder geometry and cutting parameters; selecting an appropriate chip former and feed rate tailors chip evacuation to the workpiece. For applications where surface finish matters, the stable edge and LX21 composition help to reduce vibration and improve surface integrity. The component is therefore suitable for workshop and production environments seeking an economical, robust solution for a wide range of turning tasks.

Contact Metav Werkzeuge to confirm the suitability of the Tungaloy CNGA120404 LX21 turning insert for specific materials and machine conditions or to request stock and technical advice: info@metav-werkzeuge.com, +49 2822 7131930

Technical data

• Article number: 6801826
• Manufacturer SKU: TUN6801826
• Internal SKU: 6801826-Tungaloy
• Name: CNGA120404 LX21 Tungaloy insert
• Brand: Tungaloy

Core dimensions

• Corner radius: 0.4 mm
• Included angle: 80°
• Relief angle: 0°
• Thickness: 4.76 mm
• Inscribed circle / size: 12 mm
• ISO code: 120404

Design & features

• Shape: rhombic
• Hole: with hole
• Hole style: cylindrical hole
• Chipbreaker: none
• Grade: LX21
• Material: carbide
• Intended use: turning
• Series: ISO turning inserts

FAQ

Is this insert suitable for both external and internal turning?
Yes. The CNGA120404 LX21 insert is designed as an ISO rhombic turning plate and is suitable for both external and internal turning applications when used with a compatible holder and appropriate cutting parameters.

Which workpiece materials are best matched to the LX21 grade?
The LX21 grade provides a compromise between toughness and wear resistance; the CNGA120404 LX21 is therefore recommended where a robust edge is needed under varying conditions—select the appropriate holder and cutting data according to the specific material being machined.

How does the 0.4 mm corner radius influence performance?
A 0.4 mm corner radius increases edge strength and distributes cutting forces over a larger edge area, which improves edge life and helps to achieve consistent surface finish while maintaining a controlled chip size.

What advantage does the cylindrical hole offer for clamping?
The cylindrical hole provides a positive location in the clamping assembly and supports secure screw or clamp engagement, reducing the risk of insert movement and helping to maintain repeatable cutting geometry.

Is a chipbreaker included with this insert?
No. The CNGA120404 LX21 is supplied without a chipbreaker, allowing the combination of holder geometry and cutting parameters to be used to manage chip formation and evacuation.

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.