TCMT16T308-MW4 WKK20S Wendeplatten - Walter Tools

Take advantage of stable chip formation, an optimised chipbreaker geometry and the Tiger·tec Silver coating for reliable cast iron turning; order directly via Metav Werkzeuge or consult our specialists for application-specific recommendations.

TCMT16T308-MW4 WKK20S turning insert by Walter Tools — coated for cast iron with MW4 chipbreaker

TCMT16T308-MW4 WKK20S is a triangular indexable turning insert designed for productive machining of cast iron, offering a robust coating and proven chip control for stable, repeatable results

• Tiger·tec Silver coating for long tool life
• Optimised for cast iron machining
• Triangle 60° with 0.8 mm nose radius
• MW4 chipbreaker for consistent chip control

Consistent performance from the coated grade

The WKK20S grade within the Tiger·tec Silver family is a coated cemented carbide formulated for the abrasive demands of cast iron. Its surface treatment improves resistance to wear and thermal loading, which translates into longer edge life under intermittent cutting conditions typical of cast components. For production environments this means fewer insert changes, reduced downtime and a more predictable maintenance cycle. The insert’s composition and coating are chosen to balance toughness and abrasion resistance, providing a pragmatic compromise between tool life and cutting reliability.

Geometry engineered for chip control and surface quality

The triangular 60° shape combined with an MW4 chipbreaker and a 0.8 mm nose radius delivers controlled chip formation and good surface integrity on cast iron workpieces. The 7° clearance angle reduces flank contact while maintaining cutting stability, which helps to avoid built-up edge and improves the consistency of part finish. The compact T3 thickness ensures rigidity in typical toolholders for this insert size, so the tool sustains cutting forces without excessive vibration. These geometry choices result in higher first-pass yields and less rework when machining abrasive cast materials.

Practical application and setup guidance for production use

This insert is optimised for cast iron applications (ISO group K) and fits standard toolholders for the TCMT form. When replacing inserts, ensure correct seat cleanliness and torque to the toolholder specification to retain repeatable runout and clamping force. For roughing operations on grey cast iron, the WKK20S grade performs well at moderate cutting speeds with stable feed rates; for finishing passes, reduce depth of cut and maintain chip evacuation to protect the cutting edge. The design targets industrial workshops seeking a balance of process reliability and tool economy, where reduced indexing frequency aids continuous production flow.

For tailored advice on integrating Walter Tools Tiger·tec Silver inserts into a production process, contact Metav Werkzeuge for application support and cutting-parameter recommendations at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: TCMT16T308-MW4-WKK20S-WALTER
• Designation: TCMT16T308-MW4 WKK20S
• Series: Tiger·tec Silver
• Manufacturer: Walter Tools

Facts

• Insert size: 16
• Nose radius: 0.8 mm
• Clearance angle: 7°
• Thickness: T3
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver
• Grade: WKK20S (coated carbide)
• Chipbreaker: MW4
• Shape: triangle 60°
• Application: cast iron (ISO group K)

FAQ

Is this insert suitable for machining cast iron?
The TCMT16T308-MW4 WKK20S insert is specifically designed for cast iron applications and the WKK20S grade is optimised for abrasive cast materials.

What does the MW4 chipbreaker provide?
The MW4 chipbreaker offers consistent chip control on interrupted and continuous cuts, improving chip evacuation and surface finish when machining cast iron.

How does the Tiger·tec Silver coating benefit production?
The Tiger·tec Silver coating increases wear resistance and thermal stability, which supports longer edge life and fewer tool changes in serial production.

What is the recommended nose radius for finishing operations?
A 0.8 mm nose radius balances robustness and surface quality; for finer finishes a smaller radius would be chosen, but this insert provides a good compromise for common finishing passes on cast iron.

Is this insert compatible with standard TCMT toolholders?
Yes, the geometry corresponds to standard TCMT seating forms; verify seat cleanliness and clamping torque during insert changes.

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

Protected trademarks and trade names are the property of their respective owners and are mentioned for explanatory purposes only. There is no affiliation between our company and the brands named. The offered item is an original, factory-new product from Walter Tools. The Walter AG (brand appearance: Walter Tools) is among the leading manufacturers of precision tools for metalworking and is part of the Sandvik Group.