WNMA080408-RK7 WKK10S WKK10S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating and the WKK10S grade together with the RK7 chipbreaker to achieve reliable, repeatable cast‑iron turning and secure edge life; order directly via Metav Werkzeuge or contact our consultants for machining data and application advice.

WNMA080408-RK7 WKK10S turning indexable insert — Tiger·tec Silver, for cast iron

The WNMA080408-RK7 WKK10S is a Trigon 80° turning insert engineered for machining cast iron with a Tiger·tec Silver coated, wear‑resistant grade and an RK7 chipbreaker for short, controlled chips

• Tiger·tec Silver coated grade WKK10S
• Optimised for cast iron (group K)
• Trigon 80° form with 0.8 mm corner radius
• RK7 chipbreaker for short, broken chips

Consistent performance on cast iron for predictable production

The combination of the WKK10S grade and the Tiger·tec Silver coating is designed specifically for abrasive wear and the frequently fragmented chips typical of cast iron. This results in improved tool life and more stable process windows when turning nodular or grey cast materials. The RK7 chipbreaker produces short, controllable chips that reduce the risk of entanglement and make chip evacuation easier in enclosed toolholders, helping to maintain uptime and protect downstream components.

Robust geometry for stable cutting and edge security

The Trigon 80° form with a 0.8 mm corner radius and a 0° (negative) rake angle delivers mechanical strength at the cutting edge. Negative rake geometry increases cutting edge support, which is beneficial in interrupted cuts or when machining tough inclusions in cast iron. The triangular platform also allows three indexing positions per insert, reducing tooling change frequency and supporting continuous production runs with minimal setup time.

Predictability and efficiency for machining processes

The ISO designation and tolerance class aid in tool‑holder selection and repeatability; the insert’s standardised form simplifies inventory and process planning. The coated carbide grade is tuned for abrasive resistance, which translates into fewer insert changes and lower overall manufacturing costs. For process engineers, this means easier calculation of tool life and simpler scheduling of maintenance intervals — a rational improvement in workflow and cost control.

Practical recommendations for application and setup

Use this insert where short chips and stable edges are required in cast‑iron turning. The RK7 chipbreaker is particularly suitable for medium to heavy depth cuts where chip control is critical. When setting cutting parameters, begin with conservative speeds and increase feed to exploit the insert’s abrasive resistance; consult Metav Werkzeuge for recommended cutting data tailored to specific cast‑iron grades and machine rigour. The insert is intended for standard ISO toolholders that accept Trigon‑form inserts; no on‑site demonstration is offered.

Contact Metav Werkzeuge for tailored cutting data and to specify Walter Tools' WNMA080408-RK7 WKK10S insert for efficient cast‑iron turning.

Technical Data

• Article number: WNMA080408-RK7-WKK10S-WALTER
• Label: Drehwendeschneidplatte WNMA080408-RK7 WKK10S Walter Tools
• Product type: Turning indexable insert
• Series: Tiger·tec Silver
• Grade: WKK10S
• Manufacturer: Walter Tools

Core specifications

• Shape: Trigon 80°
• Size code: 08
• Thickness code: 04
• Corner radius: 0.8 mm
• Free cutting angle: 0° (negative)
• Chipbreaker: RK7
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver
• Material application: cast iron (group K)
• Sort‑specific design for abrasive wear resistance
• Robust edge support for interrupted cuts
• Indexable for multiple positions

FAQ

What materials is this insert designed for?
The insert is optimised for machining cast iron (material group K); the WKK10S grade and Tiger·tec Silver coating address abrasive wear typical of these materials.

How does the RK7 chipbreaker affect chip control?
The RK7 chipbreaker produces short, broken chips ideal for safe evacuation in turning operations and reduces the risk of long, stringy chips in cast‑iron machining.

Is the insert suitable for interrupted cuts?
Yes. The Trigon 80° geometry combined with a 0° (negative) rake and a 0.8 mm corner radius provides robust edge support for interrupted cutting conditions.

How many indexable positions does the insert offer?
The triangular form allows multiple indexing positions per insert, reducing changeovers and increasing productive tool life.

Where can I get recommended cutting data for specific cast‑iron grades?
Metav Werkzeuge can provide tailored cutting parameters and application advice for the WNMA080408-RK7 WKK10S insert depending on the cast‑iron subtype and machine capability.

Walter Tools: The Walter AG (brand appearance: Walter Tools) with headquarters in Tübingen is one of the world’s leading manufacturers of precision tools for metalworking and is part of the Sandvik group. Protected trademarks and trade names are the property of their respective owners. Brand names and protected trade names are mentioned solely for explanation. There is no connection between our company and the named brands. The offered item is an original, factory‑new product of the manufacturer.