CNGA120412TS-2 WBK20 WBK20 Wendeplatten - Walter Tools

Take advantage of the combination of high wear resistance, stable cutting edge and consistent process security for reliable hard-turning operations; order this CBN indexable insert directly via Metav Werkzeuge or consult our specialists for application-specific advice.

CNGA120412TS-2 WBK20 indexable turning insert — CBN grade, rhombic 80° (Walter Tools)

The CNGA120412TS-2 WBK20 is an indexable turning insert engineered for high-wear, hardened-steel machining and similar demanding turning tasks, offering a rhombic 80° form and a robust cutting geometry for stable tool life.

• CBN grade WBK20 for hard materials
• Rhombic 80° shape for versatile turning
• 1.2 mm corner radius for robust edge
• 0° negative rake for stable cutting

Increased productivity in hard-turning tasks

The CBN-based WBK20 grade provides a high-resistance cutting edge that is particularly suited to hard turning and other high-wear applications. As a cubic boron nitride material, CBN maintains edge stability where carbide grades would wear rapidly; this leads to longer tool life and fewer index changes, which in turn reduces machine downtime and improves overall throughput. The combination of the rhombic 80° geometry and a solid corner radius offers predictable engagement with the workpiece, supporting steady cutting forces and consistent surface quality when machining hardened steels or materials with elevated abrasiveness.

Consistent process security through geometry and coating choices

The insert’s geometry—featuring a 1.2 mm corner radius and a 0° (negative) rake—enhances edge strength and gives a secure, repeatable cutting behaviour under heavy loads. Where process stability is a priority, this configuration minimises chipping risk and vibration, enabling stable feeds and depths of cut. The available series information indicates an open Walter cutting grade family, allowing choice of the most suitable variant within the range; selection according to the product matrix helps ensure optimal interaction between insert grade and workpiece material, thereby delivering reproducible results across production runs.

Clear advantages for workshop planning and tool management

Using a dedicated CBN insert like the CNGA120412TS-2 WBK20 reduces the need for frequent tool changeovers in hard-turning applications and simplifies inventory management through clearly defined grade and form attributes. The rhombic 80° shape delivers flexible turning angles and allows economical seat usage, while the specified tolerance class G supports predictable fitting into standard toolholders. For process planners, this means easier cycle-time estimation and reduced scrap risk—advantages that translate into measurable cost-efficiency over time.

Practical guidance for application-specific selection

Although the WBK20 grade is tailored to demanding, high-wear tasks, the precise suitability depends on the workpiece and machining parameters; the insert is intended for hardened materials and, depending on the specific grade matrix, may also perform on certain cast irons or high-temperature alloys. Consult the product matrix or Metav Werkzeuge’s technical advisors to confirm compatibility with the intended material and cutting data. Selecting the correct cutting parameters and toolholder combination will preserve the insert’s cutting edge and exploit the stable cutting behaviour that the geometry and grade enable.

For tailored selection of the CNGA120412TS-2 WBK20 CBN insert and to ensure the correct grade for the intended hardened-steel application, contact Metav Werkzeuge’s specialists at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: CNGA120412TS-2-WBK20-WALTER
• Designation: CNGA120412TS-2 WBK20
• Product type: Indexable turning insert (CNGA)
• Manufacturer: Walter Tools

Core figures

• Plate size: 12
• Corner radius: 1,2 mm
• Plate thickness: 04
• Free angle: 0° (negativ)
• Chipbreaker: 2
• Tolerance class: G

Special features

• Cutting material: CBN (WBK20)
• Series: Walter Schneidstoffsorte - Serie offen
• Plate form: Rhombus 80°
• Execution: A
• Sortenbeschreibung: CBN for hard, high-wear tasks; check product matrix for specific material suitability

FAQ

What materials is this CBN insert intended for?
The CNGA120412TS-2 WBK20 insert is a CBN grade designed primarily for hard and highly abrasive materials such as hardened steels; compatibility with other materials should be verified against the product matrix.

How does the 0° negative rake affect cutting performance?
A 0° (negative) rake increases edge robustness and process stability under heavy cutting conditions, reducing the risk of chipping during hard turning with the CNGA120412TS-2 WBK20.

What benefit does the 1.2 mm corner radius provide?
The 1.2 mm corner radius offers a strong cutting edge that tolerates higher radial depths and contributes to consistent surface finish and longer edge life on demanding workpieces.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and registered trademarks are mentioned for explanatory purposes only. There is no connection between our company and Walter Tools. The offered article is an original factory-new product of the manufacturer.