XNHF070508-D57 WKK25G WKK25G Wendeplatten - Walter Tools

The combination of the Tiger·tec Gold coating, the WKK25G grade and the optimised D57 chipbreaker ensures stable, repeatable milling of cast iron with long tool life and reliable chip control; order this insert directly via Metav Werkzeuge or consult the technical team for application support.

XNHF070508-D57 WKK25G — Indexable milling insert (Tiger·tec Gold) for cast iron — Walter Tools

XNHF070508-D57 WKK25G is an indexable milling insert designed for productive cast iron machining with a negative 0° rake and an optimised chipbreaker

• Tiger·tec Gold coating for extended tool life
• Optimised for cast iron machining
• Negative 0° rake for stable cutting
• 0.8 mm corner radius for consistent edge strength

Stable chip control for abrasive cast iron

The insert from the Tiger·tec Gold series delivers reliable chip control when machining cast iron. The D57 chipbreaker was developed to handle the typically short, breaking chips of cast iron, reducing the risk of re-cutting and machine downtime. With a dedicated grade for abrasive materials, the cutting geometry promotes repeatable chip formation and helps maintain consistent surface quality over longer tool cycles. This leads to fewer interruptions in the production flow and improved process efficiency.

Durable coating and grade for longer tool life

The coated carbide grade WKK25G in the Tiger·tec Gold range is engineered for the abrasive wear patterns of cast iron. The coating enhances resistance to flank and crater wear, which extends service intervals and supports higher metal removal rates. The combination of coating technology and a robust substrate reduces the frequency of insert changes, contributing to higher overall productivity and lower cost per component in series production.

Geometry that secures cutting stability and accuracy

A negative 0° rake and a 0.8 mm corner radius provide mechanical strength at the cutting edge, making the insert particularly suitable for interrupted cuts and heavy engagement conditions. The thicker geometry of the insert improves vibration damping and edge retention, which is beneficial for precision milling tasks where dimensional stability and surface finish are important. These design choices support process security and repeatable results across batches.

Application focus and process integration

Selected for cast iron (ISO group K), the insert is optimised for abrasive materials and the characteristic chip behaviour of grey and nodular cast irons. Integration into existing toolholders is straightforward thanks to the standard ISO designation, and the insert’s predictable performance simplifies tool selection for planners and shopfloor engineers. The result is a more streamlined production setup with fewer experimental trials and quicker ramp-up to full productivity.

Contact Metav Werkzeuge for availability and application advice on the Walter Tools XNHF070508-D57 WKK25G insert; technical consultation and tailored recommendations are available from Metav Werkzeuge’s specialists.

Technical data

• SKU: XNHF070508-D57-WKK25G-WALTER
• Type: Indexable milling insert
• ISO designation: XNHF070508-D57 WKK25G
• Grade: WKK25G
• Series: Tiger·tec Gold
• Manufacturer: Walter Tools

Facts

• Plate size: 07
• Plate thickness: 05
• Corner radius: 0.8 mm
• Rake angle: 0° (negative)
• Chipbreaker: D57
• Tolerance class: H

Special features

• Coated carbide grade optimised for cast iron
• Suitable for cast iron (ISO group K)
• Designed for abrasive wear resistance and short breaking chips
• Robust geometry for interrupted cuts and stable cutting

FAQ

What materials is this insert intended for?
The XNHF070508-D57 WKK25G insert is intended primarily for cast iron (ISO group K) applications and is optimised for the abrasive wear and short breaking chips typical of these materials.

How does the Tiger·tec Gold coating benefit machining?
The Tiger·tec Gold coating on the WKK25G grade improves wear resistance and thermal stability, which extends tool life and supports higher metal removal rates during cast iron milling.

Is this insert suitable for interrupted cuts?
Yes; the negative 0° rake and the 0.8 mm corner radius give the insert enhanced edge strength, making it suitable for interrupted cutting conditions and heavy engagement scenarios.

Which chipbreaker is used and what is its effect?
The D57 chipbreaker is specified for this insert and is optimised to produce short, controlled chips when machining cast iron, reducing re-cutting and improving process stability.

Can the insert be used in standard ISO toolholders?
The insert follows standard ISO designation practice for indexable milling inserts, allowing straightforward integration into compatible toolholders and machine setups.

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

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