CNMG120416-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

Combine the wear resistance of the Tiger·tec Silver coating with precise MK5 chip control and the proven rhombic 80° geometry for efficient cast iron turning; order directly via Metav Werkzeuge or contact their consultants for tailored application support.

CNMG120416-MK5 WKK20S Indexable turning insert — Tiger·tec Silver, for cast iron (Walter Tools)

CNMG120416-MK5 WKK20S is an indexable turning insert designed for reliable machining of cast iron components, offering a coated carbide grade and a dedicated MK5 chipbreaker for consistent short chips

• Tiger·tec Silver coating for extended tool life
• Optimised for cast iron machining
• Rhombic 80° form with 1.6 mm corner radius
• MK5 chipbreaker for short, controllable chips

Consistent productivity for abrasive cast iron work

The combination of the Tiger·tec Silver coating and the WKK20S grade delivers enhanced wear resistance specifically tuned for abrasive cast iron materials. The coated cemented carbide construction reduces flank and crater wear, which in turn sustains cutting performance over longer tool life and reduces tool-change frequency. For production runs where abrasive wear dominates, this insert supports a stable process and predictable replacement intervals, contributing to lower overall machining costs.

Geometry and chip management that reduce downtime

A rhombic 80° form with a 1.6 mm corner radius and the MK5 chipbreaker ensure consistent formation of short, broken chips when machining grey and nodular cast irons. The negative 0° relief supports robust cutting edges and helps maintain cutting stability under interrupted cuts or heavy cross-sections. Effective chip control reduces the risk of entanglement, shortens machine-cleaning cycles and lowers the likelihood of part damage, thereby improving net operating time in the workshop.

Integration into turning cycles and tooling systems

The insert’s standard CNMG geometry fits most compatible indexable toolholders that accept CNMG inserts; the series emphasis on cast iron makes it a practical choice for dedicated finishing and semi-finishing operations. The coated grade is formulated to perform under typical turning feeds and speeds for cast iron, allowing process planners to rely on predictable tool life when establishing cycle times. When combining the insert with appropriately rated toolholders and stable clamping, the result is repeatable part quality and reduced scrap rates.

Practical considerations for setup and economy

Due to its focus on abrasive cast iron machining, the insert is best used where short-chipping behaviour is required and robustness is more important than aggressive light finishing. The coated carbide substrate and chipbreaker geometry offer a balance between economy and performance, making this solution suitable for batch production and mixed-series work where downtime and regrinding costs must be minimised. Technical teams benefit from the insert’s consistent edge behaviour when planning tool inventories and replacement schedules.

Contact Metav Werkzeuge for application-specific cutting data and advice on integrating the Walter Tools CNMG120416-MK5 WKK20S insert into production — eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930

Technical data

• SKU: CNMG120416-MK5-WKK20S-WALTER
• Designation: CNMG120416-MK5 WKK20S
• Product type: Indexable turning insert (drehwendeschneidplatte)
• Manufacturer: Walter Tools

Data

• Corner radius: 1.6 mm
• Plate size: 12
• Plate thickness: 04
• Relief angle: 0° (negative)

Special features

• Series: Tiger·tec Silver
• Grade: WKK20S (coated carbide)
• Chipbreaker: MK5 (short-chip geometry)
• Plate form: Rhombic 80°
• Application: Cast iron machining (K)

FAQ

Which materials is this insert suitable for?
The CNMG120416-MK5 WKK20S insert from Walter Tools is specifically formulated for cast iron (material group K) and is tuned to handle the abrasive wear typical of such alloys.

What is the main advantage of the Tiger·tec Silver coating?
The Tiger·tec Silver coating on the WKK20S grade increases resistance to abrasive and thermal wear, which extends tool life when the insert is used on cast iron components.

How does the MK5 chipbreaker affect machining?
The MK5 chipbreaker produces short, controllable chips that improve machine cleanliness and reduce the risk of chip-related interruptions during turning with this insert.

Is this insert compatible with standard CNMG toolholders?
The insert follows the CNMG120416 geometry and is compatible with standard toolholders designed for CNMG inserts, provided appropriate clamping and clearance are observed.

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

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