CNMA160612-RK5 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of productive wear resistance and stable chip control for efficient cast iron turning; order the insert directly via Metav Werkzeuge or ask the consultants for suitability and delivery.

CNMA160612-RK5 WKK20S indexable turning insert — Tiger·tec Silver, for cast iron machining (Walter Tools)

A CNMA160612-RK5 WKK20S indexable turning insert designed for productive cast iron machining with optimised chip control and abrasion-resistant coating

• Tiger·tec Silver coating for abrasion resistance
• Optimised RK5 chipbreaker for short chips
• Rhombic 80° shape for stable turning
• 1.2 mm corner radius for reliable edge strength

Durable coating and material pairing for cast iron productivity

The insert is equipped with the Tiger·tec Silver coating and the WKK20S grade, a coated carbide developed for machining cast iron (material group K). The coating combines a hard surface layer with a tough substrate to resist abrasive wear common in grey and nodular cast irons. This pairing extends edge life under interrupted cuts and abrasive conditions, reducing tool changes and downtime. For operations that prioritise repeatable component quality, the coated grade offers measurable improvements in longevity and surface consistency without sacrificing cutting reliability.

Geometry engineered for consistent chip control and stability

Featuring the RK5 chipbreaker and a rhombic 80° shape, the insert provides dependable chip formation and evacuation when turning cast iron. The 0° (negative) rake angle increases edge strength for interrupted cuts, while the 1.2 mm corner radius improves robustness at the cutting edge, lowering the risk of premature chipping. These geometric choices result in stable cutting forces and predictable vibration behaviour, which supports higher feed rates and consistent dimensional accuracy on production runs where process stability matters.

Productivity and economy through optimised edge performance

The CNMA-style indexable design and the Tiger·tec Silver technology address both performance and cost-efficiency: fewer tool changes, longer cutting intervals and improved surface finish on cast iron components. The insert’s plate size (16) and thickness code (06) align with conventional tooling systems for straightforward integration into existing toolholders. With its focus on abrasion resistance and chip control, the insert supports higher productivity on series production and mixed-batch work where operational uptime and repeatable results translate directly into lower cost per part.

For technical advice on integrating the CNMA160612-RK5 WKK20S insert into specific turning applications or to check stock and lead times, contact Metav Werkzeuge for personal consultation and ordering support.

Technical Data

• SKU: CNMA160612-RK5-WKK20S-WALTER
• Name: CNMA160612-RK5 WKK20S
• Manufacturer: Walter Tools
• Series: Tiger·tec Silver
• Grade: WKK20S
• Execution: A

Facts

• Plate size: 16
• Thickness code: 06
• Corner radius: 1.2 mm
• Rake angle: 0° (negative)
• Plate form: Rhombus 80°
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver
• Chipbreaker: RK5
• Material application: Cast iron (K)
• Suitable for interrupted cuts and abrasive conditions

FAQ

What materials is this insert designed for?
The CNMA160612-RK5 WKK20S insert is formulated for machining cast iron (material group K) according to the grade characteristics of WKK20S.

How does the RK5 chipbreaker affect machining?
The RK5 chipbreaker promotes short, controllable chips in cast iron turning, improving evacuation and reducing the risk of entanglement in automated or manual operations.

Is the insert suitable for interrupted cuts?
Yes, the 0° negative rake angle and 1.2 mm corner radius increase edge strength, making the insert suitable for interrupted cutting conditions common in cast iron workpieces.

Can this insert be used in standard CNMA toolholders?
The designation CNMA160612 indicates compatibility with CNMA-style indexable turning holders; correct seating torque and clamp type should be observed for secure mounting.

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