DCMT070208-MK4 WKK20S Wendeplatten - Walter Tools

Take advantage of a high-performance grade that combines Tiger·tec Silver coating and the WKK20S substrate for reliable machining of cast iron; the result is extended tool life and consistent chip control that supports uninterrupted production. Order or request advice directly from Metav Werkzeuge for application-specific recommendations and rapid, professional assistance.

DCMT070208-MK4 WKK20S indexable turning insert — Tiger·tec Silver, for cast iron, Walter Tools

The DCMT070208-MK4 WKK20S is an indexable turning insert designed for precision turning of cast iron, offering a coated carbide substrate in a rhombic 55° form for versatile finishing and semi-finishing operations

• Tiger·tec Silver coating for wear resistance
• WKK20S grade optimised for cast iron machining
• MK4 chipbreaker for controlled chip formation
• Rhombic 55° shape with 0.8 mm corner radius

Outstanding wear resistance and consistent tool life

The combination of the Tiger·tec Silver coating with the WKK20S grade provides high resistance to the abrasive wear that is typical when machining cast iron. This translates into fewer tool changes and a lower risk of unplanned stoppages; the coated carbide substrate reduces flank wear and preserves the cutting edge, helping to maintain a predictable process window. The measurable benefit is a longer effective cutting life and improved overall equipment effectiveness when turning grey and nodular cast irons.

Geometry designed for a balance of robustness and surface quality

The rhombic 55° platform and the 0.8 mm corner radius deliver a compromise between cutting-edge strength and the ability to achieve a fine surface finish. A 7° clearance minimises rubbing at the flank face, reducing heat build-up and the tendency for built-up edge in intermittent cuts. The insert’s form factor supports a range of common turning tasks, enabling stable passes with reduced vibration and more consistent dimensional results compared with lesser-optimised grades.

Reliable chip control and process security

Equipped with the MK4 chipbreaker, the insert creates short, manageable chips when machining abrasive cast iron, which enhances safety and reduces machine interruptions from tangled chips. The tolerance class M ensures reproducible seating and fit in compliant toolholders, contributing to repeatable machining performance and fewer set-up adjustments. Process reliability is enhanced by the insert’s ability to handle typical cast-iron chip behaviour while maintaining edge integrity.

Easy integration and productivity gains in production

This insert integrates smoothly into standard DCMT-style toolholders and is suitable for workshops aiming to improve throughput without complex retooling. By combining a wear-resistant coating, a cast-iron-optimised grade and a proven chipbreaker geometry, DCMT070208-MK4 WKK20S supports longer cutting intervals and steadier part quality, which can reduce tooling cost per part and increase machine uptime. Further technical data and application recommendations are available on request from Metav Werkzeuge.

Contact Metav Werkzeuge for tailored cutting parameters and ordering information on Walter Tools Tiger·tec Silver inserts to optimise cast-iron turning in your production environment — Metav Werkzeuge will advise on holder compatibility and application-specific choices

Technical data

• Article number: DCMT070208-MK4-WKK20S-WALTER

• Designation: DCMT070208-MK4 WKK20S

• Manufacturer: Walter Tools

• Series: Tiger·tec Silver

• Clearance angle: 7°

• Corner radius: 0.8 mm

• Plate size: 07

• Plate thickness: 02

• Plate form: Rhombus 55°

• Tolerance class: M

• Coating: Tiger·tec Silver

• Substrate: coated carbide

• Grade: WKK20S

• Chipbreaker: MK4

• Optimised material group: cast iron (K)

• Execution: T

• Typical applications: turning, finishing, semi-finishing

FAQ

Which materials is this insert intended for?
The DCMT070208-MK4 WKK20S insert is optimised for machining cast iron, designated by the material group K, and the WKK20S grade is tailored to abrasive cast-iron conditions.

What advantages does the Tiger·tec Silver coating provide?
The Tiger·tec Silver coating increases wear resistance and edge stability on the coated carbide substrate, helping the insert maintain performance during extended cutting operations in cast iron.

How does the MK4 chipbreaker affect production?
The MK4 chipbreaker produces short, controllable chips when turning cast iron, improving chip evacuation and reducing the risk of chip entanglement that can cause stoppages.

Is the insert suitable for finishing passes?
Yes; the rhombic 55° form and the 0.8 mm corner radius allow for fine surface finishes while retaining sufficient edge strength for robust performance.

Will the insert fit standard DCMT toolholders?
The DCMT geometry corresponds to standard DCMT-style toolholders; the DCMT070208-MK4 WKK20S benefits from correct seating and the tolerance class M for repeatable clamping.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and registered marks are mentioned for explanatory purposes only. There is no affiliation between Metav Werkzeuge and the trademark owners. The offered item is original and brand-new from the manufacturer.