CNMG120408-NRS WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the combination of a wear-resistant Tiger·tec Silver coating and a stable NRS chipbreaker for secure chip control and extended tool life; the robust 0° negative rake and 0.8 mm corner radius support reliable performance in stainless steel and heat‑resistant alloys. Order the insert directly via Metav Werkzeuge or consult our specialists for application-specific advice.

CNMG120408-NRS WSM20S — Indexable turning insert, Tiger·tec Silver, Walter Tools

CNMG120408-NRS WSM20S is an indexable turning insert designed for demanding turning of stainless steel and heat‑resistant superalloys, featuring a Rhombic 80° form and optimised chip control

• Tiger-tec Silver coated grade WSM20S
• Optimised NRS chipbreaker for stable chips
• Rhombic 80° form with 0.8 mm corner radius
• 0° negative rake for robust interrupted cuts

High cutting performance for difficult materials

The combination of the Tiger·tec Silver coating and the WSM20S grade gives this insert a clear performance edge when machining tough-to-cut alloys. The coated cemented carbide substrate provides improved thermal stability and wear resistance, which translates into longer cutting edge life and fewer tool changes. For applications in stainless steel and high-temperature alloys, this results in steadier cutting forces and more predictable machining cycles, supporting higher productivity and reduced process variance.

Consistent chip control and process stability

The integrated NRS chipbreaker is designed to produce short, controllable chips even under severe cutting conditions, reducing the risk of chip snarling and machine downtime. Combined with the 0° negative rake, the geometry favours a robust cutting edge that tolerates interrupted cuts and heavy engagement without premature edge failure. This technical combination supports process reliability and helps maintain surface integrity on the workpiece, which is crucial in serial production and precision turning tasks.

Geometry engineered for versatility and finish

The Rhombic 80° insert shape with a 0.8 mm corner radius balances strength and finishing capability: the relatively small radius concentrates cutting forces for a stable edge while still delivering acceptable surface quality. The nominal inscribed circle and plate thickness provide secure clamping in standard toolholders. Overall, the geometry and grade selection make this insert suitable for both roughing operations where edge stability is essential and for semi-finishing steps where consistent results are required.

Contact Metav Werkzeuge for tailored application advice or to request a technical recommendation for Walter Tools' CNMG120408-NRS WSM20S insert via info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: CNMG120408-NRS-WSM20S-WALTER
• Type: Indexable turning insert
• Designation: CNMG120408-NRS WSM20S
• Manufacturer: Walter Tools

Facts

• Inscribed circle: 12 mm
• Thickness: 4 mm
• Corner radius: 0.8 mm
• Free cutting angle: 0° (negative)
• Tolerance class: M

Special features

• Grade: WSM20S
• Coating/series: Tiger·tec Silver
• Chipbreaker: NRS
• Plate form: Rhombic 80°
• Material application groups: S / M (heat‑resistant alloys / stainless steel)
• Execution: G
• ISO designation: CNMG120408-NRS

FAQ

What materials is this insert suitable for?
The CNMG120408-NRS WSM20S insert is designed for machining stainless steel and heat‑resistant superalloys (material groups S and M), where thermal stability and edge strength are essential.

How does the 0° negative rake affect cutting?
A 0° negative rake provides a more robust cutting edge and better resistance to chipping during interrupted cuts, increasing reliability in heavy-duty turning operations.

What benefit does the NRS chipbreaker provide?
The NRS chipbreaker produces short, consistent chips to reduce chip management issues and improve process stability during continuous or long turning cycles.

Which geometries make this insert versatile for different operations?
The Rhombic 80° form combined with a 0.8 mm corner radius offers a compromise between edge strength for roughing and a geometry capable of delivering consistent semi-finish results.

Manufacturer/Responsible: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen

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