CNGA120412T02020 WCK10 WCK10 Wendeplatten - Walter Tools

Take advantage of the combination of high-speed ceramic cutting grade WCK10, a stable 1.2 mm corner radius and a rhombic 80° geometry to improve cutting-edge life and process stability; order the insert directly via Metav Werkzeuge or consult their advisors for matching cutting data and toolholders.

CNGA120412T02020 WCK10 indexable turning insert — rhombic 80°, 0° negative (Walter Tools)

The CNGA120412T02020 WCK10 is an indexable turning insert designed for temperature‑resistant, high‑speed turning applications where a ceramic cutting grade delivers repeatable edge life and secure chip control.

• High-speed ceramic grade WCK10
• Rhombic 80° insert geometry
• 1.2 mm corner radius for edge strength
• Negative 0° rake for stable cuts

High cutting speeds and thermal resistance for productive turning

The insert uses the WCK10 ceramic cutting grade, developed for operations that demand high cutting speeds and resistance to elevated temperatures. Ceramic grades trade ductility for thermal stability, which means noticeably lower wear at the cutting edge when machining under high heat. For production environments seeking faster cycle times, this grade can extend tool life and reduce downtime associated with frequent index changes. The material behaviour of ceramic inserts differs from carbide; therefore, cutting parameters should be adapted to exploit the grade’s strength while preventing mechanical shock to the edge.

Geometry engineered for process stability and reliable edge life

A rhombic 80° geometry combined with a 1.2 mm corner radius gives a robust cutting edge that tolerates interrupted cuts and provides consistent surface quality. The negative 0° rake reduces cutting forces and enhances edge strength, making the insert suitable for more demanding turning tasks where a stable cutting action is required. The tolerance class G indicates consistent manufacturing precision, and the form and thickness codes (insert size 12, thickness 04) support predictable mounting in standard toolholders. These attributes together support improved chip formation and more uniform wear, which is beneficial in medium‑ to large‑batch production.

Practical application scope and selection guidance

This indexable insert is aimed at industrial turning operations where ceramic grades are considered for their speed and heat resistance; suitability for specific workpiece materials should be checked against the manufacturer’s product matrix. The insert is especially relevant where short contact times at high rpm are preferred over heavy interrupted cuts. Technical advisors can assist with choosing the correct cutting data and toolholder combination to match shop conditions. For further technical data or to confirm compatibility with particular materials and ISO groups, Metav Werkzeuge can provide detailed recommendations.

Contact Metav Werkzeuge for tailored machining recommendations and to specify the correct Walter Tools WCK10 insert for the intended application; their technical team will advise on cutting data, holder selection and process optimisation.

Technical Data

• Article number: CNGA120412T02020-WCK10-WALTER
• Product type: Indexable turning insert
• Manufacturer: Walter Tools
• ISO designation: CNGA120412T02020 WCK10

Facts

• Insert size: 12
• Thickness: 04
• Corner radius: 1.2 mm
• Rake angle: 0° (negative)
• Tolerance class: G

Special features

• Cutting grade: WCK10 (ceramic cutting grade)
• Geometry: Rhombus 80°
• Series: Walter Schneidstoffsorte - Serie offen
• Sorten- und Serienbeschreibung: Schneidkeramik for high cutting speeds and temperature‑resistant machining; check product matrix for workpiece suitability

FAQ

What materials is this ceramic grade suited for?
The WCK10 ceramic cutting grade is intended for temperature‑resistant, high‑speed turning; final suitability for particular workpiece materials should be checked against the product matrix provided with the CNGA120412T02020 WCK10 insert.

Which insert geometry and edge radius does it feature?
This indexable insert has a rhombic 80° geometry with a 1.2 mm corner radius and a negative 0° rake, designed to combine edge strength with consistent chip control.

What are the size and thickness designations for this insert?
The designation CNGA120412T02020 WCK10 corresponds to an insert size 12 and thickness code 04; these codes identify mounting and clamping compatibility in standard toolholders.

How precise is the manufacturing tolerance?
The insert is produced to tolerance class G, ensuring repeatable dimensions for predictable clamping and machining performance.

Is this insert suitable for interrupted cuts or heavy roughing?
The combination of a robust corner radius and negative rake improves resistance to mechanical shock, making it more tolerant of interrupted cuts; however, ceramic grades are primarily chosen for high‑speed finishing and semi‑finishing applications, so cutting conditions should be adapted accordingly.

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

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