DNMG110408-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of high wear resistance, reliable chip control and repeatable geometry for efficient cast-iron turning; request a specification or a consultation from Metav Werkzeuge to ensure optimal integration in production.

DNMG110408-MK5 WKK20S turning insert – for cast iron, Tiger·tec Silver

DNMG110408-MK5 WKK20S is a negative-geometry turning insert optimised for cast-iron machining, offering a coated-carbide grade designed for stable wear and consistent performance

• Tiger·tec Silver coating for high wear resistance
• Optimised MK5 chipformer for reliable chip control
• Rhombic 55° shape with 0.8 mm nose radius
• Suited for cast iron machining (ISO K)

Longer tool life through coating and grade selection

The combination of the Tiger·tec Silver series and the WKK20S grade yields a cutting edge tailored to the abrasive nature of cast-iron workpieces. As a coated carbide insert, it balances toughness and hardness to resist abrasive wear typical of grey and nodular cast irons, while the grade’s designation signals a universal yet resilient performance. The built-in chipformer MK5 supports predictable chip breaking and evacuation, which reduces downtime caused by imprecise chip flow and protects both the toolholder and the workpiece. The negative free angle (0°) is suitable for robust turning operations where stability under intermittent cuts and interrupted cuts is a requirement.

Geometry that improves surface quality and repeatability

The rhombic 55° insert form and 0.8 mm nose radius provide a dependable compromise between strength and finishing capability: a rounded cutting edge gives improved edge stability, while the 55° approach angle helps to control cutting forces in turning applications. The insert’s tolerance class M and standardised plate dimensions ensure quick, repeatable seatings in toolholders, simplifying tool-change procedures and maintaining consistent workpiece dimensions across batches. The DNMG110408-MK5 format and plate thickness deliver the mechanical support necessary for medium- to heavy-duty turning, reducing vibrational influences on surface finish.

Productivity and process security in series production

Designed for workshop and production environments, the insert supports continuous operation through a combination of wear-resistant coating, standardised geometry and a reliable chip control concept. The Walter Tools solution lowers the frequency of unplanned tool changes and contributes to higher first-pass yields by offering predictable tool life and performance in cast-iron machining. Integrating these inserts into existing turning cycles can raise throughput and reduce scrap, while the grade’s universality simplifies inventory: one coated-carbide designation covers a wide range of cast-iron alloys and typical shop conditions.

Request a tailored recommendation or a technical datasheet from Metav Werkzeuge for the DNMG110408-MK5 WKK20S turning insert; contact Metav Werkzeuge at info@metav-werkzeuge.com or +49 2822 7131930 for application-specific advice

Technical data

• SKU: DNMG110408-MK5-WKK20S-WALTER
• ISO designation: DNMG110408-MK5 WKK20S
• Designation (without grade): DNMG110408-MK5
• Manufacturer: Walter Tools

Facts

• Geometry: Rhombic 55°
• Nose radius: 0.8 mm
• Plate size: 11
• Plate thickness: 04
• Free angle: 0° (negative)
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Grade: WKK20S
• Material: Coated carbide
• Chipformer: MK5
• Application: Cast iron (ISO group K)
• Suitable for abrasive cast-iron machining

FAQ

What materials is this insert intended for?
The DNMG110408-MK5 WKK20S turning insert is specified for cast-iron machining (ISO group K) and is formulated to manage the abrasive and brittle chip behaviour typical of those materials.

How does the Tiger·tec Silver series affect tool life?
Tiger·tec Silver coating on the WKK20S grade improves wear resistance and edge protection, extending cutting life under typical cast-iron cutting conditions and contributing to more predictable productivity.

What role does the MK5 chipformer play?
The MK5 chipformer is engineered to break and evacuate chips reliably in turning operations, reducing the risk of chip entanglement and protecting both the toolholder and the workpiece during continuous production runs.

Is the insert suitable for heavy interrupted cuts?
The negative free-angle geometry (0°) combined with the DNMG format and the 0.8 mm nose radius provides enhanced edge support and stability, making this insert appropriate for more demanding cuts and intermittent engagement scenarios.

How does the rhombic 55° shape influence cutting forces?
A 55° approach angle moderates radial and axial force components, improving control over cutting forces and helping to achieve consistent dimensional accuracy and surface quality in serial turning operations.

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

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