CNMG160612-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of a wear‑resistant Tiger‑tec Silver grade and a robust rhombic geometry to keep production moving with predictable tool life and consistent chip control; order the CNMG160612‑MK5 WKK20S directly via Metav Werkzeuge or consult the team for application advice.

CNMG160612-MK5 WKK20S turning indexable insert — Rhombus 80°, Tiger‑tec Silver (Walter Tools)

A CNMG160612‑MK5 WKK20S turning insert engineered for productive machining of cast iron components in serial and jobbing operations

• Tiger‑tec Silver coated for high wear resistance
• Designed for cast iron machining (ISO K)
• Rhombic 80° form with 1.2 mm corner radius
• Negative 0° rake for stable cutting performance

High wear resistance for reliable cycle times

The combination of the Tiger‑tec Silver coating and the WKK20S carbide substrate provides enhanced resistance to abrasive wear common in cast iron machining. This coating system balances hardness and toughness so that flank wear develops predictably rather than catastrophically; the result is extended tool life and fewer unplanned insert changes. For production planners this translates into steadier cycle times and reduced inspection overhead.

Geometry that promotes stable cutting and chip control

The Rhombus 80° geometry, paired with a 1.2 mm corner radius and a negative 0° rake, offers a stable cutting angle for interrupted cuts and cast surfaces. The MK5 chipbreaker is configured to produce short, controllable chips when turning cast iron, reducing the risk of chip entanglement and improving surface consistency. In practice, the robust edge geometry supports heavier depths of cut and conservative feed steps without sacrificing surface quality.

Process benefits: productivity and consistent surface finish

By matching grade and geometry to the demands of cast iron (ISO K), the insert delivers reproducible results across batch runs. The coated carbide substrate minimises adhesion and abrasive wear, thereby reducing the need for frequent edge dressing or uncontrolled tool changes. Fewer interruptions and consistent tool performance contribute to higher net machining time and predictable workpiece quality — essential for production lines where repeatability is critical.

Practical application and integration into toolholders

The CNMG indexable form fits standard turning toolholders that accept rhombic 80° inserts; its designation ensures compatible clamping and orientation. The negative rake design aids in vibration damping on older lathes or during interrupted cutting. For setup, ensure stable clamping, appropriate coolant strategy if used, and standard insert seating to exploit the MK5 chip control. Where mixed cast iron grades are processed, the grade’s universality helps maintain performance across different grey and nodular irons.

Contact Metav Werkzeuge for tailored process recommendations on the Walter Tools CNMG160612‑MK5 WKK20S insert; eMail: info@metav-werkzeuge.com or call +49 2822 7131930 to discuss cutting data and availability

Technical Data

• Article number / SKU: CNMG160612-MK5-WKK20S-WALTER
• Designation: CNMG160612-MK5 WKK20S
• Product type: Turning indexable insert (Drehwendeschneidplatte)

Facts

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

Special features

• Series: Tiger‑tec Silver
• Grade: WKK20S (coated carbide)
• Chipbreaker: MK5
• Application: cast iron (ISO K)
• Designation without grade: CNMG160612‑MK5

FAQ

What materials is this insert suitable for?
The CNMG160612‑MK5 WKK20S insert is designed primarily for cast iron (ISO K) applications and performs well on abrasive cast materials.

How does the Tiger‑tec Silver coating benefit machining?
The Tiger‑tec Silver coating on the WKK20S grade reduces abrasive wear and helps maintain cutting edge integrity, extending the usable life of the insert.

What role does the MK5 chipbreaker play?
The MK5 chipbreaker produces short, controlled chips when turning cast iron, improving chip evacuation and reducing the risk of entanglement.

Is the rhombic 80° form suitable for heavy cuts?
Yes, the Rhombus 80° geometry combined with a 1.2 mm corner radius and negative 0° rake provides stability that supports heavier depths of cut in interrupted or roughing operations.

Can this insert be used in standard CNMG toolholders?
The CNMG‑format insert is compatible with standard toolholders that accept rhombic 80° CNMG inserts; correct clamping and seating are important for repeatable performance.

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