CNMG190616-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

Benefit from a combination of high wear resistance from the Tiger‑tec Silver coating, secure chip control with the MK5 breaker and the robust Rhombic 80° form for stable turning of cast iron; order directly via Metav Werkzeuge or consult our specialists for application advice.

Turning insert CNMG190616-MK5 WKK20S for cast iron — Walter Tools

The CNMG190616-MK5 WKK20S is a coated carbide turning insert engineered for productive machining of cast iron with a focused chip‑control geometry and a durable Tiger‑tec Silver coating.

• Tiger‑tec Silver coating for high wear resistance
• Optimised for cast iron machining (ISO group K)
• Rhombic 80° form with 1.6 mm nose radius
• MK5 chipbreaker for stable chip control

Maximised productivity through material‑matched design

The insert combines a Tiger‑tec Silver coating with a coated carbide substrate to address the abrasive wear characteristics of cast iron. This combination leads to consistently high abrasion resistance and longer tool life under demanding conditions. The MK5 chipbreaker is tuned to produce short, controllable chips when turning cast iron, reducing interruptions and improving process reliability. With a Rhombic 80° form and a 1.6 mm nose radius the geometry balances edge strength and surface finish, enabling higher material removal rates without sacrificing component quality.

Robust geometry for stable, repeatable turning operations

A 0° negative rake gives the cutting edge increased mechanical strength, particularly beneficial for interrupted cuts and roughing passes in cast iron. The insert’s tolerance class M and execution G indicate consistent manufacturing quality and dimensional accuracy, which supports reproducible setup and predictable tool life. The CNMG designation aligns the insert with standard indexable toolholders, making integration into existing tool systems straightforward. For workshops seeking reliable cycle times, the design emphasises efficient chip flow and reduced tool change frequency, translating into measurable productivity gains.

Practical advantages and supplier guidance

Specifically formulated for the ISO material group K (cast iron), the insert’s configuration reduces built‑up edge and helps maintain surface integrity on grey and nodular cast irons. The visible benefits are fewer secondary operations and improved first‑pass part quality. For selection and process windows, Metav Werkzeuge’s application team can provide cutting data recommendations and advice on compatible toolholders. If further technical data or cutting trials are required, the team is available to discuss application specifics and to help integrate the insert into production workflows.

Contact Metav Werkzeuge for tailored application support for the Walter Tools CNMG190616-MK5 WKK20S turning insert; email info@metav-werkzeuge.com or call +49 2822 7131930 for detailed cutting parameters and availability.

Technical data

• Article number: CNMG190616-MK5-WKK20S-WALTER
• SKU: CNMG190616-MK5-WKK20S-WALTER
• Product type: Turning insert
• Designation: CNMG190616-MK5 WKK20S
• Series: Tiger‑tec Silver

Facts

• Insert size: 19
• Thickness: 06
• Nose radius: 1.6 mm
• Shape: Rhombus 80°
• Clearance angle: 0° (negative)

Special features

• Coating: Tiger‑tec Silver (coated carbide)
• Chipbreaker: MK5
• Application: cast iron (ISO group K)
• Tolerance class: M
• Execution: G

FAQ

What materials is this insert suitable for? The CNMG190616-MK5 WKK20S turning insert by Walter Tools is optimised for cast iron applications and corresponds to ISO material group K.

How does the MK5 chipbreaker influence machining? The MK5 chipbreaker on the Walter Tools insert promotes short, consistent chips when machining cast iron, improving chip evacuation and reducing workpiece and toolholder interference.

What are the benefits of Tiger‑tec Silver coating? Tiger‑tec Silver provides enhanced wear resistance and thermal stability for the coated carbide substrate, extending cutting life in abrasive cast‑iron conditions.

Why choose a 0° negative rake and 1.6 mm nose radius? A 0° negative rake increases edge strength for interrupted or heavy cuts, while a 1.6 mm radius delivers a compromise between robustness and surface finish, suitable for roughing to semi‑finishing operations.

Is the CNMG designation compatible with standard toolholders? Yes, the CNMG geometry follows ISO indexable insert standards and fits corresponding CNMG toolholders; confirm holder specifications for secure clamping.

Manufacturer: Walter Tools; Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen, Germany

The Walter AG (brand appearance: Walter Tools) is part of the Sandvik group and is recognised for precision machining tools. Protected trademarks and trade names are the property of their respective owners. Brand names and protected product names are mentioned for explanatory purposes only. There is no connection between our company and the mentioned brands. The offered article is an original, factory‑new product of the manufacturer.