CNMG 120412 T5105 Wendeplatten - Tungaloy

Benefit from the combination of a CVD-coated carbide grade T5105, the ISO‑standard CNMG120412 form and a double‑sided chipbreaker for efficient, high‑speed turning of cast iron; order directly via Metav Werkzeuge or consult our technical advisors for application‑specific guidance.

CNMG120412 T5105 CNMG 120412 T5105 turning insert by Tungaloy — CVD-coated carbide, rhombic 80°

A CNMG120412 T5105 indexable turning insert engineered for high‑speed finishing and medium‑to‑heavy roughing of cast iron in stable turning conditions

• CNMG120412 indexable insert, ISO rhombic 80°
• CVD-coated carbide grade T5105 for cast iron
• Double-sided chipbreaker for consistent chips
• Cylindrical hole, compatible with standard holders

High‑speed performance with wear resistance

The CVD‑coated carbide grade T5105 is formulated for sustained cutting at elevated speeds while maintaining edge stability when machining cast iron. The chemical vapour deposition layer increases resistance against abrasive wear and thermal softening, which translates into longer tool life and fewer insert changes during production runs. For operations that demand repeatable turning results, this combination of coating and substrate delivers measurable gains in cycle time and consistent surface quality.

Secure fit and ISO compatibility for flexible use

The ISO CNMG geometry in a rhombic 80° form ensures broad compatibility with a wide range of external holders and boring bars; compatibility is determined by form, clearance angle, tolerance class, attachment method, size and thickness. The insert is supplied with a cylindrical hole and a plate thickness of 4.76 mm, facilitating straightforward clamping with standard underplates, clamp sets and replacement screws. Specifying the correct holder geometry and tolerance class guarantees repeatable seating and concentricity for accurate turning operations.

Reliable chip control for steady productivity

A double‑sided chipbreaker provides controlled chip formation across both cutting edges, reducing the risk of entanglement and simplifying chip evacuation on conventional and high‑feed turning passes. By choosing a chipbreaker matched to material and cutting conditions, chip shape and breakage become predictable, which improves surface finish and reduces machine downtime caused by manual chip clearing. The combination of a defined corner radius 1.2 mm and the chip control design supports a balance between edge strength and cutting forces for robust, productive machining.

Handling, indexing and process recommendations

With a plate size of 12 mm and a corner radius of 1.2 mm, the insert supports a range of feed and depth settings; the two usable cutting edges per side extend effective tool life through indexing. The clearance or relief angle of 0° suits applications where positive seating and repeatable geometry are required. For best results, match the T5105 grade to cast iron under stable machine and workpiece clamping conditions and select cutting parameters that reflect the chosen depth of cut and feed. The insert’s nominal thickness and hole style simplify replacement routines and spare‑parts logistics in production environments.

For procurement or detailed process advice on Tungaloy T5105 inserts, contact Metav Werkzeuge for tailored recommendations and availability at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6850139
• SKU: 6850139-Tungaloy
• Manufacturer SKU: TUN6850139
• Model series: ISO‑Drehwendeschneidplatten
• Material: carbide

Facts

• Thickness: 4.76 mm
• Size (inscribed circle): 12 mm
• Corner radius: 1.2 mm
• Included angle: 80°
• Clearance angle: 0°

Special features

• CVD‑coated carbide (T5105)
• Double‑sided chipbreaker
• Rhombic insert form (CNMG)
• With cylindrical hole
• Suitable application: turning (Drehen)
• ISO designation: CNMG120412

FAQ

What materials is this insert optimised for?
The CNMG120412 T5105 insert is optimised for machining cast iron; the T5105 grade and CVD‑coating are selected to resist abrasive wear typical of these materials.

How many cutting edges are available per insert?
The insert features a double‑sided design, offering multiple indexable edges to extend service life through re‑indexing.

Which holder types are compatible with this insert?
Compatibility depends on form, clearance angle, tolerance class, attachment and thickness; the rhombic CNMG form and cylindrical hole fit standard external holders and boring bars designed for ISO inserts.

Is the insert suitable for heavy roughing passes?
Under stable clamping and appropriate parameter selection, the combination of a 1.2 mm corner radius and T5105 carbide supports productive roughing as well as finishing passes.

Can the coating withstand high cutting speeds?
Yes—the CVD layer on the T5105 grade improves thermal and abrasive resistance, making the insert suitable for elevated cutting speeds in cast iron turning.

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.