CNMA 120408 T5125 Wendeplatten - Tungaloy

Benefit from a CVD‑coated carbide T5125 grade that combines toughness for interrupted cuts and an ISO CNMA 120408 format for straightforward toolholder compatibility; order the CNMA120408 T5125 Tungaloy insert directly via Metav Werkzeuge or ask our consultants if needed.

CNMA 120408 T5125 ISO turning insert for turning — Tungaloy

The CNMA120408 T5125 is an ISO‑standard rhombic turning insert engineered for external and internal turning, offering enhanced toughness for interrupted cuts and less stable machining conditions.

• CVD‑coated carbide grade T5125
• Designed for interrupted cuts in cast iron
• ISO CNMA 120408 rhombic insert
• Cylindrical hole for secure clamping

Consistent performance in interrupted turning

The CVD‑coated T5125 grade provides a balanced combination of toughness and wear resistance that is particularly effective when machining cast iron under interrupted or unstable cutting conditions. The coating increases edge strength and resistance to built‑up edge, which reduces unexpected tool changes and contributes to more predictable cycle times. Specifying a 0.8 mm corner radius increases edge robustness without compromising the ability to achieve acceptable surface finish, making this insert a pragmatic choice where process stability is a priority.

Reliable fit, secure clamping and quick set‑up

Built to the ISO CNMA 120408 form, this rhombic insert integrates with holders and boring bars that match in form, clearance, tolerance class, fixation, size and thickness. The cylindrical hole ensures positive clamping and repeatable seating when used with an appropriate clamp, shim and screw set, lowering set‑up time and the risk of misalignment. The combination of a 4.76 mm plate thickness and the rhombic geometry with an 80° approach angle helps maintain cutting stability across a variety of tool overhangs and holder designs, supporting steady metal removal rates.

Material choice and machining benefits explained

Manufactured from carbide and finished with the T5125 CVD coating, the insert is optimised for cast iron but can be considered for other compatible workpiece materials when cutting conditions require toughness over extreme hardness. The 4.76 mm thickness and 12 mm inscribed circle provide a solid platform for moderate to heavy cuts, while the 0° clearance geometry supports predictable cutting forces and consistent chip flow. Where a chipbreaker is not integrated, appropriate cutting parameters and coolant strategy should be selected to maintain chip control and surface quality.

For tailored grade selection and cutting‑parameter advice for the T5125 insert, contact Metav Werkzeuge for application support and order handling.

Technical data

• Article number: 6850136
• SKU: 6850136-Tungaloy
• Manufacturer SKU: TUN6850136
• Model series: ISO turning inserts
• Name: CNMA120408 T5125 Tungaloy insert

Core data

• Size (inscribed circle): 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Approach angle: 80°
• Clearance angle: 0°
• Hole: with cylindrical hole

Special features

• Coating: CVD (T5125)
• Material: carbide
• Plate form: rhombic
• ISO designation: CNMA 120408
• Application: turning
• Chipbreaker: none (without)

FAQ

Which materials is this insert best suited for?
The CNMA120408 T5125 insert is primarily designed for cast iron machining, where its CVD‑coated T5125 grade delivers improved toughness and reduced risk of chipping during interrupted cuts.

How does the T5125 coating improve performance in interrupted cutting?
The T5125 CVD coating increases edge strength and heat resistance, helping the insert withstand intermittent impacts and variable cutting forces typical of interrupted turning.

What defines compatibility with a toolholder?
Compatibility depends on matching the ISO form, inscribed circle, plate thickness and the clamping method; the CNMA120408 format requires holders and clamps that accept a rhombic insert with a cylindrical hole.

Is the insert supplied with a chipbreaker?
This insert is supplied without a chipbreaker; chip control must be addressed through cutting parameters, tool geometry and coolant strategy based on the workpiece material.

What is the SKU and manufacturer reference for ordering?
Order using SKU 6850136‑Tungaloy or manufacturer reference TUN6850136 to ensure the correct CNMA120408 T5125 Tungaloy insert is supplied.

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.