CNMA 120408 T5105 Wendeplatten - Tungaloy

Benefit from the combination of CVD-coated carbide T5105 and ISO compatibility for dependable high-speed machining of cast iron; the rhombic CNMA120408 geometry with a 0.8 mm corner radius provides consistent edge life and surface finish. Order the insert directly via Metav Werkzeuge or consult our specialists for selection advice.

CNMA 120408 T5105 — Indexable turning insert for turning by Tungaloy

CNMA120408 T5105 is an ISO‑standard rhombic indexable insert designed for turning operations, optimised for high‑speed machining of cast iron under stable cutting conditions

• CVD-coated carbide grade T5105
• ISO CNMA120408 rhombic geometry
• Suitable for high-speed cast iron turning
• Cylindrical hole for secure clamping

Consistent performance with a wear‑resistant grade

The insert is manufactured from carbide and finished with a CVD coating to provide enhanced wear resistance during elevated cutting speeds. The T5105 grade is formulated for stable cutting of cast iron, enabling longer tool life and fewer insert changes, which improves uptime in batch production. In practical terms, the coating reduces flank wear and edge breakdown, while the substrate maintains toughness—this balance supports higher metal removal rates without sacrificing surface quality.

Geometry and mounting that stabilise the process

The rhombic shape (ISO CNMA120408) with an 80° included angle and a 0.8 mm corner radius gives a robust cutting edge suited to external and internal turning tasks. The insert is supplied with a cylindrical hole, ensuring secure clamping in standard ISO holders; compatibility is defined by form, relief angle, tolerance class, clamp style, size and thickness. The 4.76 mm plate thickness contributes to vibration dampening in less rigid set‑ups, helping to preserve dimensional accuracy and reduce tool chatter during continuous cuts.

Practical benefits for workshop productivity

Choosing this indexable plate reduces downtime through predictable wear behaviour and simplified inventory: one ISO CNMA120408 variant covers a range of cast iron turning jobs when used with the appropriate holder and cutting parameters. The absence of a dedicated chipbreaker on this grade means chip control must be matched to the machining conditions and coolant strategy, but the insert’s edge geometry favours stable, repeatable cuts that lower scrap rates and post‑process finishing.

Selection guidance and application notes

For best results in high‑speed cast iron machining, pair the insert with rigid tooling and moderate depths of cut; the 0° relief angle and rhombic profile favour finishing and medium‑cut conditions. When adapting to different cast iron types or interrupted cuts, consider tooling stability and feed adjustments rather than changing insert geometry. The ISO standard designation simplifies holder selection and replacement logistics across production lines.

For process optimisation and a tailored recommendation for the Tungaloy CNMA120408 T5105 indexable insert, contact Metav Werkzeuge for expert consultation at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6850134
• SKU: 6850134-Tungaloy
• Manufacturer SKU: TUN6850134
• Model series: ISO turning indexable inserts

Core dimensions

• Corner radius: 0.8 mm
• Plate thickness: 4.76 mm
• Plate size: 12 mm
• Insert angle: 80°
• Relief angle: 0°

Features & materials

• Material: carbide
• Coating: CVD
• Grade: T5105
• Shape: rhombic
• Hole style: cylindrical hole
• Chipbreaker: none
• Application: turning; suited for cast iron

FAQ

What materials is this insert suitable for?
The CNMA120408 T5105 insert is designed primarily for high‑speed machining of cast iron; its CVD‑coated carbide composition delivers wear resistance appropriate for such materials.

Does this insert fit ISO holders?
Yes. The insert follows the ISO CNMA120408 designation, so compatibility with ISO turning holders is determined by form, relief angle, tolerance class, clamping style, size and thickness.

What does the 0.8 mm corner radius affect?
A 0.8 mm corner radius balances edge strength and surface finish: it increases edge robustness for repeated cuts while maintaining a fine finish for many turning applications.

Is there a chipbreaker on the insert?
This grade is supplied without a chipbreaker, meaning chip control should be managed through cutting parameters, toolholder selection and coolant application for the best results with cast iron.

How should the insert be clamped?
The insert features a cylindrical hole for positive clamping in compatible ISO holders; ensure the holder matches the insert’s geometry and thickness for stable cutting performance.

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.