CNMM120412-HU3 WPP20G Wendeplatten - Walter Tools

Benefit from the combination of high wear resistance from the Tiger·tec Gold grade, the stable cutting geometry of the Rhombic 80° form with r1.2 corner radius, and the reliable chip control of the HU3 breaker for steady production results; order original Walter Tools inserts directly via Metav Werkzeuge or consult our technical team for application advice.

CNMM120412-HU3 WPP20G indexable turning insert – Rhombic 80°, r1.2, negative 0° clearance, Walter Tools

The CNMM120412-HU3 WPP20G is a rhombic 80° indexable turning insert engineered for steel turning applications, delivering a balanced combination of wear resistance and general-purpose performance.

• Tiger·tec Gold coated carbide grade WPP20G
• Rhombic 80° form with r1.2 corner radius
• Negative 0° clearance for stable cutting
• Designed for steel machining per ISO P

High-performance wear resistance for consistent cycle times

The Tiger·tec Gold coating and the WPP20G carbide composition provide a marked improvement in wear resistance compared with conventional grades, which reduces the frequency of insert changes and helps maintain process stability. In practical terms, the enhanced coating supports consistent edge life during continuous turning of steels classified under ISO P; accordingly, component tolerances remain more stable across batches. This combination is particularly valuable in production environments where repeatability and predictable tool life contribute directly to throughput and cost-efficiency.

Geometry and chip control that support reliable machining

The Rhombic 80° shape and r1.2 corner radius yield a robust edge geometry that resists chipping under moderate interrupted cuts and modest radial engagement. Paired with the HU3 chipbreaker, the insert promotes controlled chip formation during steel turning, which simplifies chip evacuation and reduces the risk of surface damage. The negative 0° clearance angle provides a secure cutting stance for heavier cuts and assists in damping vibration, improving dimensional stability on medium to heavy-duty turning operations.

Practical application guidance for process engineers

This insert is optimised for a wide range of steel grades (ISO P) and suits versatile turning tasks from semi-finish to general roughing operations. When integrating the insert into tooling systems, match the holder geometry to the rhombic 80° form and select feed and speed values consistent with the workpiece steel and the chosen insert thickness and corner radius. The combination of Tiger·tec Gold coating and the HU3 chipbreaker allows conservative feeds for enhanced surface finish or increased feeds for productive metal removal while keeping tool life predictable.

Reliability, repeatability and workshop efficiency

Tolerance class M and the consistent manufacturing of the insert support reliable referencing and repeatable set-ups in automated and manual workflows alike. The insert’s build and coating philosophy—aimed at wide material coverage and stable chip formation—help reduce unexpected tool changes, minimise scrap rates and support continuous production. Choosing a coated carbide grade such as WPP20G is a pragmatic step for teams prioritising process security and a favourable ratio of performance to cost.

For application-specific recommendations or to source original Walter Tools CNMM120412-HU3 WPP20G inserts, contact Metav Werkzeuge for technical consultancy and ordering: info@metav-werkzeuge.com — Tel. +49 2822 7131930

Technical data

• SKU: CNMM120412-HU3-WPP20G-WALTER
• Label: Drehwendeschneidplatte CNMM120412-HU3 WPP20G Walter Tools
• Product type: indexable turning insert
• Manufacturer: Walter Tools
• Series: Tiger-tec Gold
• Grade: WPP20G
• ISO designation: CNMM120412-HU3 WPP20G
• Base designation: CNMM120412-HU3

Core figures

• Corner radius: r1.2 mm
• Insert size: 12
• Thickness: 04
• Clearance angle: 0° (negative)
• Plate form: Rhombus 80°
• Chipbreaker: HU3
• Tolerance class: M

Special features

• Coating/grade: Tiger·tec Gold coated carbide (WPP20G)
• Material application: Steel (ISO P)
• Execution: M
• Series description: balance of wear resistance and universality
• Sort usage: 10 wear-resistant / 20 universal / 30-35 tougher behaviour

FAQ

What materials is this insert suitable for? The CNMM120412-HU3 WPP20G insert is designed primarily for machining steels, conforming to ISO P material groups, and was developed to handle the typical heat and chip characteristics of steel turning.

How does the Tiger·tec Gold grade benefit production? The Tiger·tec Gold coating on the WPP20G grade increases wear resistance and edge stability, which helps to extend tool life and maintain consistent cycle times in serial turning operations.

What is the advantage of the negative 0° clearance angle? A negative 0° clearance provides a stable cutting geometry for heavier radial engagement and helps to damp vibration, supporting more secure cutting in demanding turning tasks.

Can this insert be used for finishing as well as roughing? Yes, the combination of the r1.2 corner radius and the HU3 chipbreaker allows flexibility: conservative feeds improve surface finish, while increased feeds enable efficient material removal for roughing.

Is this an original Walter Tools product? Yes, this listing describes an original Walter Tools turning insert in the Tiger·tec Gold series with the designation CNMM120412-HU3 WPP20G.

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

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