CNMG120408-RP7 WPP30G Wendeplatten - Walter Tools

Take advantage of the combination of Tiger‑tec Gold coating, the WPP30G grade and the robust RP7 chipbreaker for consistent, productive Stahl turning; order directly via Metav Werkzeuge or request advice from our consultants.

CNMG120408-RP7 WPP30G turning insert for Stahl — Walter Tools

A CNMG120408-RP7 WPP30G indexable turning insert engineered for productive Stahl machining, featuring the Tiger‑tec Gold coating and an RP7 chipbreaker for controlled chip formation.

• Tiger‑tec Gold coating for extended tool life
• Optimised for Stahl machining (ISO P)
• 0° negative rake for robust cuts
• Rhombic 80° shape with 0.8 mm corner radius

Higher productivity through coating and grade advantages

The combination of the Tiger‑tec Gold coating and the WPP30G grade delivers a measurable rise in process reliability when machining Stahl. The coated carbide composition is designed to tolerate the heat and abrasion typical of turning operations in ISO P materials, meaning longer tool life and fewer insert changes. The Tiger‑tec Gold technology reduces flank wear and supports consistent surface finish across long production runs, which translates into fewer interruptions and better output per shift. This section explains the practical benefit: improved uptime and lower cost per part thanks to reduced changeover frequency.

Robust geometry and chip control for stable turning

A 0° (negative) rake combined with the RP7 chipbreaker produces a stable cutting edge and predictable chip formation even under interrupted cuts or unstable clamping conditions. The rhombic 80° shape provides good access to shoulders and external profiles, while the 0.8 mm corner radius balances strength and finish capability. The RP7 chipbreaker is optimised for medium to heavy cuts in Stahl, directing chips away from the cutting zone and reducing the risk of built-up edge. As a result, the insert supports consistent cycle times and reduces the need for secondary finishing.

Simple selection and secure clamping for workshop use

The CNMG form is widely compatible with standard turning toolholders, enabling straightforward integration into existing tooling systems. The insert’s nominal designations—CNMG120408—match common catalogue and holder specifications, simplifying inventory management. The WPP30G grade is a versatile option across a broad range of Stahl subtypes (from wear-resistant to general-purpose steels), offering a dependable balance between toughness and wear resistance. Handling and indexability allow fast rotation of unused cutting edges, which keeps machines productive with minimal downtime for tool changes.

For reliable, productive Stahl turning with Walter Tools, contact Metav Werkzeuge for tailored advice and prompt supply of CNMG120408-RP7 WPP30G inserts.

Technical data

• SKU: CNMG120408-RP7-WPP30G-WALTER
• Article: Drehwendeschneidplatte CNMG120408-RP7 WPP30G Walter Tools
• Type: Indexable turning insert / turning insert
• Manufacturer: Walter Tools

Core specifications

• Grade: WPP30G
• Series: Tiger‑tec Gold
• Relief angle: 0° (negative)
• Corner radius: 0.8 mm
• Insert size designation: 12
• Thickness designation: 04
• Tolerance class: M

Features and compatibility

• Chipbreaker: RP7
• Shape: Rhombic 80°
• Material application: Stahl (ISO P)
• Coating: Tiger‑tec Gold (coated carbide)
• Substrate: coated cemented carbide

FAQ

What materials is this insert suitable for?
The CNMG120408-RP7 WPP30G is designed primarily for Stahl machining (ISO P); the WPP30G grade and Tiger‑tec Gold coating are tuned for the heat and chip characteristics of steels.

How does the 0° negative rake affect cutting performance?
A 0° (negative) rake increases cutting edge strength and supports stable behaviour in tougher cuts; this makes the insert suitable for operations where robustness is prioritised over minimal cutting forces.

Which chipbreaker should be used for medium to heavy cuts?
The RP7 chipbreaker integrated on this insert promotes reliable chip control during medium to heavy turning in Stahl, reducing the likelihood of long, stringy chips and improving process stability.

Is the CNMG120408-RP7 compatible with standard toolholders?
Yes; the CNMG geometry follows common indexable insert standards, allowing compatibility with widely used turning toolholders that accept rhombic 80° CNMG inserts.

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

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