CNGA120404TM-MW2 WBH10C WBH10C Wendeplatten - Walter Tools

Combining the WBH10C CBN grade's wear resistance with a Rhombic 80° geometry and a 0.4 mm nose radius, this insert offers extended tool life and consistent surface quality in hard-turning applications; Order the CNGA120404TM-MW2 WBH10C directly via Metav Werkzeuge or ask our consultants if needed

CNGA120404TM-MW2 WBH10C — turning indexable insert, CBN grade (Walter Tools)

The CNGA120404TM-MW2 WBH10C is a CBN-grade turning insert engineered for hard turning and finish operations on hardened steels.

• WBH10C CBN grade for hard turning
• Rhombic 80° insert geometry
• 0° negative relief for robust cutting
• 0.4 mm nose radius for fine finishes

Consistent performance for hardened steels and hard turning

The combination of WBH10C and CBN cutting material gives a marked improvement in wear resistance when machining hardened steels (ISO group H). The high thermal stability of CBN reduces flank wear and preserves the cutting edge under elevated temperatures, which translates into fewer tool changes and more predictable cycle times. This stability supports higher productivity by maintaining dimensional accuracy over longer tool life, delivering a clear cost-benefit in series production where changeover time is costly. The paragraph describes why the material choice matters and how it affects process reliability.

Geometry designed for stability and controlled cutting forces

The Rhombic 80° geometry and the 0° negative relief create a robust cutting edge that resists chipping under heavy or interrupted cuts. A negative relief increases edge strength and is particularly suited to rigid setups and deeper cuts, while the 0.4 mm nose radius balances load distribution and surface finish, enabling consistent part quality without sacrificing edge durability. The integrated MW2 chipbreaker optimises chip formation for the intended feed range, supporting controlled evacuation and reducing the risk of secondary damage to the workpiece or toolholder.

Better surface finish and reliable chip control

By combining a modest nose radius with an engineered chipbreaker, this insert supports repeatable surface quality in finishing passes. The MW2 chipbreaker limits long, stringy chips and promotes short, manageable chips that protect the tool and workpiece. For operations where reproducible roughness and minimal post-processing are required, the insert’s design helps achieve target tolerances with fewer interventions. The clear chip geometry also assists in maintaining coolant access and reduces thermal peaks at the cutting zone, contributing to consistent dimensional stability.

Application guidance and practical advantages in the workshop

Ideal for hard turning and pre-hardened steel operations, the insert is specified for stable, process-oriented machining where tool life and reproducibility matter. The Walter CBN / Hartstoff series is intended for demanding wear conditions and offers an alternative to conventional carbide solutions when machining beyond the typical hardness range. Use appropriate negative insert holders and ensure a rigid clamping arrangement to exploit the insert’s strengths. The result is reduced downtime, fewer insert changes and improved throughput, which supports leaner production and enhances overall process security.

For dependable hard-turning performance with the Walter Tools CNGA120404TM-MW2 WBH10C insert, contact Metav Werkzeuge for supply and technical advice via info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number / SKU: CNGA120404TM-MW2-WBH10C-WALTER
• Designation: CNGA120404TM-MW2
• Grade: WBH10C
• Series: Walter CBN / Hartstoff
• Product type: Drehwendeschneidplatte

Facts

• Insert size: 12
• Thickness: 04
• Nose radius: 0.4
• Relief angle: 0° (negative)
• Insert shape: Rhombus 80°
• Chipbreaker: MW2
• Application group: H (hardened steels)

Special features

• Material grade: WBH10C (coated CBN)
• Suitable for hardened and pre-hardened steel
• Series: Walter CBN / Hartstoff
• Manufacturer: Walter Tools

FAQ

Which materials is this insert intended for?
The CNGA120404TM-MW2 WBH10C insert is designed primarily for hardened steels (ISO group H) and is suitable for pre-hardened steel applications where CBN performance is required.

What does WBH10C signify and why choose CBN?
WBH10C denotes a Walter Tools CBN grade optimised for hard machining. CBN offers superior wear resistance and thermal stability compared with carbide when cutting hardened materials.

When is a 0° negative relief advantageous?
A 0° negative relief provides a stronger cutting edge for interrupted cuts, heavy depths of cut and rigid setups, improving edge life and reducing the likelihood of chipping in demanding operations.

How does the MW2 chipbreaker affect machining?
The MW2 chipbreaker promotes controlled chip formation and evacuation, supporting consistent surface finish and reduced risk of re-cutting chips, which is particularly beneficial in automated or unattended processes.

Can this insert replace carbide for all operations?
For machining at elevated hardness levels, CNGA120404TM-MW2 WBH10C with CBN is typically superior to carbide in longevity and stability; however, carbide may remain preferable for softer materials or where impact resistance is the primary concern.

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

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