CNGA120408T02020 WCK10 WCK10 Wendeplatten - Walter Tools

Take advantage of the combination of WCK10 cutting ceramic, Rhombic 80° geometry and a 0.8 mm nose radius for higher throughput and consistent surface quality; order the insert via Metav Werkzeuge or consult the Metav team for matching tool holders and machining parameters.

CNGA120408T02020 WCK10 indexable turning insert — Rhombic 80°, 0.8 mm nose radius — Walter Tools

The CNGA120408T02020 WCK10 is a negative‑geometry indexable turning insert designed for high cutting speeds and temperature‑resistant machining in compatible ISO workpiece groups

WCK10 cutting ceramic for high cutting speeds
Rhombic 80° insert geometry
0.8 mm nose radius for improved surface quality
0° negative clearance for secure engagement

Higher productivity thanks to a ceramic grade tuned for speed

The core advantage of the WCK10 grade is its suitability for high cutting speeds and temperature‑resistant machining, characteristics that translate directly into shorter cycle times where the workpiece material and machining strategy permit. Ceramic grades are engineered to retain hardness at elevated temperatures, enabling aggressive metal removal rates without rapid flank wear. For practical planning, the product matrix should be consulted to confirm compatibility with the specific ISO material group and to define cutting data that balance life and productivity.

Geometry and relief that stabilise cutting and finish

The Rhombic 80° shape combined with 0° negative relief provides a robust cutting edge that resists deflection under load while offering repeatable seating in negative‑style tool holders. The 0.8 mm nose radius supports a fine surface finish without sacrificing edge strength, making the insert suitable for mixed finishing and light‑turning passes. The specified tolerance class G ensures consistent seat fit and repeatability across batches, thereby reducing setup variation and scrap risk during serial production.

Designed for integration into standard turning toolholders

Dimension codes indicate an insert size of 12 with a thickness code of 04 and a rhombic form that fits common negative‑style clamping systems. The open series designation in the Walter portfolio allows straightforward replacement and pairing with established holders used in CNC lathes and multi‑spindle machines. When adapting to a particular turning cell, mechanical seating, clamp type and expected cutting forces should be verified so that the CNGA120408T02020 performs as intended and chip control remains stable.

Practical considerations for process reliability

The Walter Schneidstoffsorte series emphasises stable chip formation and consistent cutting behaviour; nevertheless, machining success depends on matching the insert to the workpiece, coolant strategy and machine rigidity. That is why the product matrix is an essential planning tool: it links ISO material groups to recommended grades and cutting ranges. For applications where thermal resistance and high speed are priorities, this insert offers a pragmatic route to improved cycle times while maintaining reproducible results and predictable tool change intervals.

For applications requiring elevated cutting speeds and temperature resistance, specify the Walter Tools CNGA120408T02020 WCK10 through Metav Werkzeuge — contact info@metav-werkzeuge.com or call +49 2822 7131930 for tailored advice and holder recommendations

Technical Data

• Article number: CNGA120408T02020-WCK10-WALTER
• Type: Indexable turning insert
• ISO designation: CNGA120408T02020 WCK10
• Brand: Walter Tools

Core technical data

• Insert size: 12
• Thickness code: 04
• Nose radius: 0.8 mm
• Clearance angle: 0° (negative)
• Insert shape: Rhombic 80°
• Tolerance class: G

Materials & features

• Grade: WCK10 (cutting ceramic)
• Series: Walter Schneidstoffsorte - Serie offen
• Suitability: check product matrix for ISO workpiece groups
• Application note: indicated for high cutting speeds and temperature‑resistant machining

FAQ

What materials is this insert suitable for?
Suitability depends on the ISO workpiece group; the WCK10 ceramic grade is indicated for high cutting speeds and temperature‑resistant machining, so consult the product matrix for exact material matches when selecting the insert.

How does the 0° negative clearance influence performance?
The negative clearance provides a secure cutting engagement and improved edge stability under load, which helps the CNGA120408T02020 WCK10 maintain consistent cutting geometry in heavy or interrupted cuts.

Can the 0.8 mm nose radius be used for finishing?
Yes, the 0.8 mm radius offers a balance between edge strength and surface quality, making it suitable for fine finishing operations within recommended cutting parameters.

Manufacturer: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen; Germany

Walter AG (marketed as Walter Tools) is a leading manufacturer of precision cutting tools and forms part of the Sandvik group. Protected trademarks and product names belong to their respective owners. Mark names and registered trademarks are used solely for explanation; there is no affiliation between Metav Werkzeuge and the trademark owners.