CNMG120412-RM5 WPP20G G Wendeplatten - Walter Tools

Benefit from the combination of the Tiger·tec Gold grade and the RM5 chipbreaker to achieve longer tool life and reliable chip control in steel turning. The robust geometry—rhombic 80°, 1.2 mm corner radius and 0° negative rake—ensures stable cutting and consistent surface finish, keeping production running smoothly. Order the CNMG120412-RM5 WPP20G directly via Metav Werkzeuge or consult our specialists for tailored tool selection.

CNMG120412-RM5 WPP20G – Turning indexable insert, Tiger·tec Gold coating (Walter Tools)

The CNMG120412-RM5 WPP20G is a rhombic 80° turning insert with RM5 chipbreaker, engineered for reliable machining of steels in both single-pass and serial production.

• Tiger·tec Gold coating for extended tool life
• Optimised RM5 chipbreaker for steel machining
• Rhombic 80° shape with 1.2 mm corner radius
• 0° negative rake for stable cutting performance

Proven productivity for steel machining

The insert is produced in the Tiger·tec Gold series and the WPP20G grade, a coated carbide solution optimised for steels (ISO P). This combination is designed to deliver consistent wear resistance and broad applicability across unalloyed and alloyed steels. The result is a measurable increase in process stability: fewer interruptions and longer intervals between indexings. For workshop managers and production planners, that translates into higher overall equipment effectiveness and reduced per-component machining costs.

Predictable chip control and surface integrity

The RM5 chipbreaker has been developed to shape chips reliably under the typical thermal and mechanical conditions of steel turning. Paired with the rhombic 80° geometry and the 1.2 mm corner radius, the insert supports smooth chip evacuation and reduces the risk of built-up edge formation. The 0° negative rake contributes to cutting-edge strength and vibration damping, which helps maintain surface finish and dimensional accuracy on turned parts — particularly important in medium to heavy cutting operations.

Robust geometry for repeatable performance

Tolerance class M indicates a standardised dimensional consistency useful for automated indexable-tool handling and turret systems. The insert’s designation and form factor make it straightforward to integrate into existing toolholders designed for CNMG profiles. Consistent geometry reduces set-up variability and allows for predictable tool-change cycles, which benefits both high-volume production and just-in-time manufacturing environments where repeatability is essential.

Coating and material compatibility explained

The cutting material is a coated carbide grade from Walter Tools’ Tiger·tec Gold technology. A coated carbide insert combines a hard substrate with a multi-layer coating to offer wear resistance while maintaining edge toughness. In practice, this means the insert is particularly suited for the thermal and chip-formation characteristics of steels (ISO P). The coating improves resistance to abrasion and adhesion, extending usable life and contributing to more consistent part quality over extended runs.

Contact Metav Werkzeuge to discuss Walter Tools Tiger·tec Gold inserts and secure the CNMG120412-RM5 WPP20G for efficient steel turning and reliable production output

Technical data

• Article number (SKU): CNMG120412-RM5-WPP20G-WALTER
• Designation: CNMG120412-RM5 WPP20G
• Product type: Turning indexable insert / Drehwendeschneidplatte
• Manufacturer: Walter Tools

Facts

• Insert size (inscribed circle): 12
• Corner radius: 1.2 mm
• Clearance angle: 0° (negative)
• Thickness code: 04
• Tolerance class: M

Special features

• Series: Tiger·tec Gold
• Grade / sort: WPP20G
• Chipbreaker: RM5
• Plate shape: Rhombic 80°
• Material application: Steel (ISO P)
• Designation without grade: CNMG120412-RM5

FAQ

What materials is this insert suitable for?
This insert is formulated for machining steels; the WPP20G grade and Tiger·tec Gold coating are optimised for ISO P materials and typical steel cutting conditions.

How does the RM5 chipbreaker affect machining of steel?
The RM5 chipbreaker promotes controlled chip formation and evacuation under steel cutting conditions, improving surface finish and reducing the likelihood of built-up edge.

What advantages does the rhombic 80° geometry provide?
The rhombic 80° geometry offers flexibility for turning operations, stable cutting engagement and good access to shoulders and profiles while maintaining cutting-edge strength.

Can this insert be used for heavy roughing operations?
With a 0° negative rake and a 1.2 mm corner radius, the insert provides edge strength suitable for heavier cuts in steel, delivering robust performance in interrupted or continuous roughing.

Is the CNMG120412-RM5 WPP20G compatible with standard CNMG toolholders?
Yes, the designation corresponds to the common CNMG form factor and is compatible with toolholders designed for CNMG inserts, subject to correct seat and clamping conditions.

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

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