CNGA120412TM-2 WBH20C WBH20C Wendeplatten - Walter Tools

Take advantage of the combination of CBN cutting performance, stable 0° negative rake geometry and robust 1.2 mm corner radius to achieve consistent hard-turning results and longer tool life; order through Metav Werkzeuge or consult our experts for integration advice.

CNGA120412TM-2 WBH20C – indexable turning insert, CBN grade for hard machining (Walter Tools)

The CNGA120412TM-2 WBH20C is an indexable turning insert engineered for hard machining applications, especially hardened steels and pre-hardened components, combining a coated CBN grade with a rhombic 80° form for stable, repeatable cutting.

• CBN-coated for hard machining (WBH20C)
• Rhombic 80° geometry for versatile turning
• Negative rake 0° for stable cutting
• Corner radius 1.2 mm for robust edge

Maximise productivity in hard turning with CBN technology

This insert uses a CBN-based grade (WBH20C) tailored for high-wear environments, enabling a predictable wear pattern and extended tool life when machining hardened steels. The CBN cutting edge is designed to resist abrasive wear common with hard materials; this results in fewer indexings and reduced downtime. In practice, the hard-facing performance translates into more consistent cycle times and improved process economy in series production.

Stable cutting geometry for consistent surface quality

The Rhombic 80° shape and 0° negative rake deliver a cutting geometry that prioritises stability under load, reducing chatter and vibration during interrupted cuts. The modest 1.2 mm corner radius supports a strong cutting edge that tolerates radial engagement while producing a controlled surface finish. For metallurgically demanding workpieces, these design choices provide reproducible part quality and predictable reconditioning intervals.

Integration into production for repeatable results

Designed as an indexable insert for standard turning toolholders, the plate’s tolerance class G and form ensure straightforward substitution in existing tool setups. The stable geometry reduces the need for frequent adjustments, contributing to process reliability and simplified tool management. Where process security is critical, the combination of CBN grade and robust plate form supports consistent output across shifts and operators.

Material compatibility and recommended applications

The grade is specified for hard machining tasks and is particularly suited to hardened steels and pre-hardened components; it is not intended for general soft-steel finishing. Its application range includes demanding hard-turning operations where wear resistance and edge stability are decisive. For selection, consult machining parameters matched to workpiece hardness and the intended cutting strategy to balance cutting speed and service life.

For application advice on the Walter Tools CBN grade or to discuss integration into an existing turning process, contact Metav Werkzeuge for technical consultation at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• SKU: CNGA120412TM-2-WBH20C-WALTER
• ISO designation: CNGA120412TM-2 WBH20C
• Grade: WBH20C
• Series: Walter CBN / Hartstoff
• Product type: Indexable turning insert (drehwendeschneidplatte)

Facts

• Plate shape: Rhombus 80°
• Insert size: 12
• Thickness code: 04
• Corner radius: 1.2 mm
• Free angle / rake: 0° (negative)
• Tolerance class: G
• Chipbreaker: 2
• Version: A

Special features

• Coated CBN cutting material for hard machining
• Suitable for hardened steels (H) and pre-hardened steel applications
• Robust edge geometry for enhanced wear resistance
• Designed for stable cutting and predictable wear behaviour

FAQ

What materials is this insert suitable for?
The CNGA120412TM-2 WBH20C insert is specified for hardened steels and pre-hardened steel applications; the WBH20C CBN grade is optimised for hard machining tasks.

How does the 0° negative rake affect the cutting process?
A 0° negative rake increases edge strength and stability under high cutting forces, which for the CNGA120412TM-2 WBH20C means improved resistance to chipping and consistent surface quality on hard materials.

Can this insert be used in automatic production environments?
Yes, the insert’s stable geometry and CBN wear characteristics make the plate suitable for automated and series production where repeatability and tool life are priorities.

What does the thickness code "04" indicate?
The thickness code 04 identifies the plate’s standard thickness designation for this ISO form; refer to toolholder compatibility specifications to confirm correct seating and clamping.

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 marks are mentioned for explanation of application and compatibility only; there is no affiliation between Metav Werkzeuge and the named brands. The offered item is original and factory-new from the manufacturer.