CNMA 120408 T5115 Wendeplatten - Tungaloy

Take advantage of the CVD-coated carbide T5115 for reliable wear resistance and the ISO CNMA120408 geometry for consistent clamping and vibration control; these features combine to deliver productive turning of cast-iron components. Order the insert directly via Metav Werkzeuge or consult our specialists for application-specific advice.

CNMA 120408 T5115 turning insert by Tungaloy — CVD-coated carbide, rhombic CNMA

The CNMA120408 T5115 is an ISO-standard rhombic turning insert designed for external and internal turning, optimised as a universal grade for cast-iron machining.

• ISO CNMA120408 format, rhombic 12 mm
• CVD-coated carbide grade T5115 for cast iron
• 0.8 mm corner radius for versatile finishing
• Cylindrical hole and 0° clearance angle

Increase uptime with controlled wear and stable edges

The combination of CVD-coated carbide and the T5115 grade results in a balanced performance between wear resistance and edge stability, which directly reduces unscheduled tool changes. For production environments this means longer tool life and fewer interruptions, improving overall process efficiency. The coating helps at elevated temperatures typical in cast-iron turning, maintaining cutting-edge integrity and enabling consistent surface quality without frequent regrinding.

Secure clamping and geometry that enhances surface finish

The ISO CNMA120408 shape and rhombic outline, together with the cylindrical hole and precise dimensions, ensure reliable mounting in compatible CNMA holders. A 0° clearance angle and 4.76 mm thickness provide the rigidity needed to minimise chatter during heavier cuts, while the 0.8 mm corner radius offers a flexible balance between roughing capability and finishing quality. These geometric attributes translate into more predictable results and reduced rework, especially when machining cast components.

Practical integration and application guidance for production shops

Integration requires a matching external holder or boring bar, a suitable pad or clamp set and replacement screws; compatibility depends on form, clearance angle, tolerance class, fastening style, size and thickness. Typical use is external and internal turning where chip control and edge security are critical; select a chipbreaker and grade that suit the workpiece material, machining strategy and machine stability. The insert is delivered as an ISO-standard component, allowing straightforward replacement and inventory standardisation for mixed-tool systems.

For process-driven turning with Tungaloy’s T5115 grade, contact Metav Werkzeuge for a tailored recommendation and fast supply — eMail: info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6850135

• SKU: 6850135-Tungaloy

• Manufacturer part no.: TUN6850135

Core technical data

• Size: 12

• Thickness: 4.76 mm

• Lead/approach angle: 80°

• Corner radius: 0.8 mm

• Clearance angle: 0°

Designs and special features

• CVD-coated carbide, grade T5115

• ISO rhombic CNMA geometry

• Cylindrical hole for secure fastening

• Intended for external and internal turning

• No chipbreaker specified

• Universal grade for cast iron

FAQ

What materials is this insert suited for?
The CNMA120408 T5115 insert is formulated as a universal grade for machining cast iron, offering a compromise between hardness and edge stability that favours consistent performance on grey and nodular cast irons.

How does the CNMA geometry affect machining stability?
The rhombic CNMA shape combined with the specified thickness and 80° approach angle provides rigidity and predictable chip flow, so the CNMA120408 insert reduces vibration and helps achieve a smoother surface finish in turning operations.

Is a chipbreaker included with this insert?
This specific item is supplied without a chipbreaker; the absence of an integrated chipformer means chip control must be managed by selecting an appropriate grade/hardness and matching the insert to a holder with suitable geometry.

Which holders and clamping components are required?
A matching CNMA external holder or boring bar, a pad/clamp set and the correct screws are required; compatibility depends on insert form, size, thickness and fastening style to ensure secure clamping.

Can this insert be used for internal turning?
Yes, the insert is suitable for external and internal turning, provided a compatible boring bar and correct setup for rigidity and chip evacuation are used.

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.