CNGA120412TM-2 WBH10 Wendeplatten - Walter Tools

Benefit from the combination of the WBH10 CBN grade for exceptional wear resistance and the robust Rhombus 80° geometry with a 1.2 mm corner radius for stable cutting in hard machining; order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

CNGA120412TM-2 WBH10 indexable turning insert — Walter Tools

CNGA120412TM-2 WBH10 is a negative-insert turning grade engineered for hard machining and finishing of hardened steels and similar high-hardness materials

• CBN grade WBH10 for hard machining
• Rhombus 80° insert geometry for stability
• 0° negative clearance for robust cutting
• Corner radius 1.2 mm for consistent surface finish

High wear resistance for demanding hard turning

The WBH10 grade is a CBN (cubic boron nitride) cutting material developed specifically for prolonged service when machining hardened steels and other highly abrasive workpieces. CBN is a superabrasive that maintains a sharp, wear-resistant cutting edge at high temperatures and contact pressures. In practice this means longer tool life, fewer insert changes and more predictable process windows compared with conventional carbide when working in the hardness ranges indicated by ISO 513 for group H. The result is improved uptime and lower overall machining cost per component.

Robust geometry that enhances process security

The insert’s Rhombus 80° shape combined with a negative 0° clearance produces a highly stable cutting edge that resists deflection under heavy radial loads. The 1.2 mm corner radius is sized to balance edge strength and surface finish—suitable for many finishing and semi-finishing operations on pre-hardened and hardened materials. The standardised CNGA120412TM-2 outline and 12 mm size allow straightforward integration into common turning toolholders, supporting repeatable set-up and simple inventory management.

Consistent chip control and productivity benefits

A controlled chip breaker configuration (span breaker type 2) and the CBN substrate deliver consistent chip formation even under the higher cutting forces typical of hard turning. Stable chip flow reduces risk of built-up edge and unpredictable interruptions, improving part quality and machine efficiency. Where process reliability and repeatability are priorities, this insert supports fewer interruptions for tool change and reduced scrap rates, contributing to a measurable productivity advantage on series operations.

Contact Metav Werkzeuge for application-specific recommendations, toolholder pairing and to request the CNGA120412TM-2 WBH10 insert directly — application engineers are available by e‑mail or phone to advise on machining parameters and workpiece suitability

Technical data

• SKU: CNGA120412TM-2-WBH10-WALTER
• Designation: CNGA120412TM-2 WBH10
• Product type: Indexable turning insert (Drehwendeschneidplatte)
• Series: Walter CBN / Hartstoff

Facts

• Geometry: Rhombus 80°
• Corner radius: 1.2 mm
• Plate size: 12
• Plate thickness: 04
• Clearance angle: 0° (negative)
• Tolerance class: G
• Grade: WBH10
• Span breaker: 2

Materials & features

• Suitable for: gehärtete Stähle (ISO group H)
• Suited for: pre-hardened Stahl applications
• Coating / substrate: CBN cutting material
• Execution: A

FAQ

What materials is this insert suitable for?
The CNGA120412TM-2 WBH10 insert is specified for machining gehärtete Stähle (ISO group H) and is intended for hard machining and pre-hardened Stahl applications.

What does the WBH10 grade mean in practice?
WBH10 denotes a Walter CBN cutting grade optimised for high wear resistance and stable cutting when turning hardened materials; the grade provides consistent performance under elevated contact pressures.

How does the Rhombus 80° geometry affect cutting?
Rhombus 80° geometry offers a robust edge for radial stability and access to tight internal contours while the 0° negative clearance enhances edge strength for heavy-duty cuts.

Is the insert compatible with standard toolholders?
The CNGA120412TM-2 outline and 12 mm plate size correspond to common turning toolholder pockets, enabling straightforward installation and repeatable set-up.

What benefits does the 1.2 mm corner radius deliver?
A 1.2 mm corner radius increases edge robustness and helps achieve a consistent surface finish in finishing and semi-finishing passes on hard materials.

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

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