CNGA120404SM-MWS WCH10C Wendeplatten - Walter Tools

Take advantage of the combination of high wear resistance, stable chip control and robust edge security for efficient hard-turning operations; order the CNGA120404SM-MWS WCH10C insert via Metav Werkzeuge or discuss process parameters with our consultants for optimal integration.

CNGA120404SM-MWS WCH10C indexable turning insert – Coated ceramic grade for hardened steels, Walter Tools

The CNGA120404SM-MWS WCH10C is an indexable turning insert engineered for hard machining of hardened steels, combining a coated ceramic cutting grade with an MWS chipbreaker and rhombic 80° geometry for reliable, high-temperature performance.

• Coated ceramic WCH10C for hard turning
• MWS chipbreaker for stable chip control
• Rhombic 80° geometry for versatile machining
• Negative 0° rake, 0.4 mm corner radius

High wear resistance for hard materials

The insert’s WCH10C cutting grade is a coated ceramic designed specifically for demanding hard-turning tasks. Ceramic materials retain hardness at elevated temperatures, so the cutting edge resists abrasion and thermal softening during continuous operation. This results in consistent edge life and fewer unplanned tool changes. For workshops processing quenched or tempered components, the combination of ceramic chemistry and robust bonding offers measurable improvements in longevity compared with conventional carbide solutions.

Stable chip control and improved surface outcomes

A precisely engineered MWS chipbreaker promotes predictable chip formation even under high cutting forces, reducing risk of chip entanglement and machine downtime. The rhombic 80° shape provides flexible approach angles, while the 0° (negative) relief increases insert strength for interrupted cuts. The modest 0.4 mm corner radius supports better edge security and surface finish on tight tolerance components, translating directly into reduced rework and higher first-pass yield.

Boosting process reliability and productivity

Tailored for the ISO group H (hardened steels), this insert supports stable material removal rates at elevated temperatures, improving cycle-time predictability. The robust grade and geometry deliver process reliability, which helps to plan tool-change intervals and lower overall tooling costs. When introduced into an established turning cell, the result is a more uniform tool life distribution and improved capacity planning—advantages that scale from job shops to production lines.

Practical designation and handling for integration

The insert is listed as CNGA120404SM-MWS WCH10C and conforms to a familiar rhombic form factor that fits many compatible tool holders. The tolerance class G ensures interchangeability and repeatable clamping behaviour, simplifying set-up and measurement routines. Operators benefit from the straightforward identification of chipbreaker and grade markings, which aids stock management and supports consistent tool selection across multiple machines.

Discuss the suitability of the Walter Tools WCH10C grade for your hard-turning applications with Metav Werkzeuge; contact our technical team at info@metav-werkzeuge.com or by phone on +49 2822 7131930 for tailored advice and swift supply.

Technical data

• Article number: CNGA120404SM-MWS-WCH10C-WALTER
• Designation: CNGA120404SM-MWS WCH10C
• Product type: Indexable turning insert
• Manufacturer: Walter Tools

Facts

• Inscribed circle: 12 mm
• Corner radius: 0.4 mm
• Thickness: 04
• Relief angle: 0° (negative)
• Tolerance class: G

Special features

• Series: Walter CBN / Hartstoff
• Grade: WCH10C (coated ceramic)
• Chipbreaker: MWS
• Geometry: Rhombus 80°
• Material suitability: hardened steels (ISO group H)
• Execution: A

FAQ

What materials is this insert intended for? This insert is intended primarily for hardened steels and is specified for the ISO group H; the WCH10C grade provides the wear resistance necessary for hard machining.

How does the MWS chipbreaker affect machining? The MWS chipbreaker promotes controlled chip formation and evacuation, which improves process stability and reduces the likelihood of chip-related interruptions.

Is the 0° relief suitable for interrupted cuts? Yes, the 0° (negative) relief enhances insert stability and strength, making it appropriate for interrupted or heavy cutting engagements.

What is the benefit of the 0.4 mm corner radius? A 0.4 mm corner radius increases edge strength and supports better surface finish while also extending edge life under the higher forces typical of hard turning.

Which holder types are compatible with the rhombic 80° shape? The CNGA form factor is compatible with a wide range of standard turning holders designed for rhombic 80° inserts; holders that accept CNGA profiles will provide secure clamping and repeatable positioning.

How is the insert identified in stock and documentation? Identification is by the full designation CNGA120404SM-MWS WCH10C and the Walter Tools branding, which simplifies inventory tracking and ensures correct grade selection for specific workpieces.

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

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