CNMA 120408 T515 Wendeplatten - Tungaloy

Take advantage of the combination of CVD-coated cemented carbide and an 80° rhombic geometry for reliable, economical turning of cast iron; the insert’s central cylindrical hole ensures secure clamping and reproducible positioning. Order the CNMA120408 T515 insert directly via Metav Werkzeuge or ask our consultants if needed.

CNMA120408 T515 CNMA turning insert (ISO 120408) by Tungaloy – 80° rhombic, CVD-coated

The CNMA120408 T515 is an ISO-standard indexable insert engineered for efficient external and internal turning of cast iron, combining robust edge life with stable chip formation.

• ISO 120408 rhombic insert, 80° tip
• CVD-coated cemented carbide T515
• For economical cast iron turning
• Central cylindrical hole for secure clamping

Consistent chip control and efficient cast iron machining

The CVD-coated T515 grade provides a balance between wear resistance and cost-effectiveness, making this insert particularly suitable for economic machining of cast iron. The geometry is designed to maintain a stable cutting edge under interrupted cuts and varying workpiece stability, so fewer tool changes are required. The absence of a dedicated chipbreaker on this grade means the insert performs best when paired with appropriate cutting parameters and a holder that assists chip evacuation, delivering predictable material removal rates and improved process efficiency.

Secure clamping and dimensional reliability for series production

An indexable insert with a central cylindrical hole offers repeatable seating and positive clamping in compatible toolholders, which is essential for batch production and automated turning cells. The 80° included angle and rhombic shape allow versatile approach angles for both external and internal operations, while the corner radius 0.8 mm helps to balance edge strength and surface finish. When mounted correctly, the system reduces vibration sensitivity and supports consistent part tolerances across runs.

Practical selection and mounting guidance for turning applications

Select the CNMA geometry and the T515 grade when the focus is on productive, low-cost machining of ferrous castings; evaluate holder compatibility by matching form, relief angle, tolerance class, clamping method and plate thickness. The insert thickness of 4.76 mm and the inscribed circle size 12 mm are standard metrics to verify fit with ISO-designated holders. For best results, pair the insert with a rigid external holder or boring bar and adjust feeds to suit the 0° clearance angle and the intended surface finish expectations.

Contact Metav Werkzeuge today for ordering advice and application support for the Tungaloy CNMA120408 T515 turning inserts; email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss suitability for specific cast iron operations

Technical data

• Article number: 6733822
• Manufacturer SKU: TUN6733822
• SKU: 6733822-Tungaloy
• Model series: ISO turning indexable inserts
• Designation: CNMA120408

Facts

• Angle: 80°
• Corner radius: 0.8 mm
• Thickness: 4.76 mm
• Inscribed circle / size: 12 mm

Special features

• Material: cemented carbide
• Coating/grade: CVD-coated T515
• Shape: rhombic (80°)
• Hole: with cylindrical hole
• Application: turning (external and internal)
• Chipformer: without chipbreaker
• Compatibility: ISO-compliant mounting (form, relief, tolerance, clamping, size, thickness)

FAQ

Is this insert suitable for general cast iron turning?
The CNMA120408 T515 insert is specifically developed for economical machining of cast iron and offers a balance of wear resistance and cost-efficiency for many cast iron turning tasks.

What holder type is required for this insert?
Compatibility depends on holder form, relief angle, tolerance class, clamping method and plate thickness; use an ISO‑compliant external holder or boring bar matched to the CNMA geometry.

How does the T515 grade affect tool life?
The T515 CVD-coated grade provides stable edge life for cast iron applications, improving overall productivity by reducing the frequency of insert changes.

Can the insert be used for interrupted cuts?
Yes; the insert geometry and robust cemented carbide body are suitable for interrupted cuts when the correct holder stability and cutting parameters are applied.

What dimensions should be checked before ordering?
Confirm the inscribed circle (12 mm), thickness (4.76 mm), corner radius (0.8 mm) and the presence of a central cylindrical hole to ensure correct fit with the chosen holder.

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.