TNMU160508R-G27 WKK25G Wendeplatten - Walter Tools

Take advantage of a high-wear resistant, coated cemented carbide grade combined with proven geometry for reliable cast-iron milling. The combination of Tiger·tec Gold technology and the WKK25G grade ensures stable chip formation and long tool life, supporting consistent productivity. Order directly via Metav Werkzeuge or consult the technical team for application-specific advice.

TNMU160508R-G27 WKK25G milling indexable insert — Tiger·tec Gold, for cast iron — Walter Tools

The TNMU160508R-G27 WKK25G is a triangular milling indexable insert designed for productive machining of cast iron and similar abrasive materials.

• Tiger·tec Gold coating for high wear resistance
• Optimised for cast iron machining
• Triangle 60° shape for stable clamping
• Corner radius 0.8 mm for precise engagement

Higher productivity through controlled chip formation

The combination of the WKK25G grade and the G27 chipbreaker is engineered specifically for abrasive cast-iron alloys. The coated substrate promotes predictable chip control, reducing chip-related interruptions and the need for manual chip handling. For workshop planners this translates into fewer unplanned stopovers and a smoother production flow. The technical advantage of a dedicated chipbreaker is that it converts often short, brittle chips from cast iron into manageable fragments, improving surface finish and tool engagement.

Longer life from advanced coating and substrate

The insert’s coated cemented carbide substrate, run through the Tiger·tec Gold process, offers elevated wear resistance and edge stability under typical cast-iron cutting conditions. Coating technology here reduces flank wear and boosts resistance to abrasive elements in the workpiece, extending the service interval between index changes. This reduced downtime and predictable tool life support cost-effective batch processing and help to maintain consistent component quality over serial production.

Geometry that secures stability and accuracy

The Triangle 60° plate form with a corner radius 0.8 mm and negative rake 0° provides a secure seat in the toolholder and a robust cutting edge for interrupted or heavy cuts. This geometry minimises vibration and improves positional repeatability on the spindle, which benefits dimensional accuracy at the workpiece. The compact plate size and standard clamping form also simplify inventory planning and toolholder compatibility across a range of milling heads.

Practical application advice and selection criteria

Suitable primarily for cast iron machining, this insert offers a balance between wear resistance and toughness for general-purpose finishing and roughing. The standard tolerance class and form support predictable tool changeovers within automated machining cells. For users evaluating tools for specific alloys or cutting conditions, the TNMU160508R-G27 WKK25G should be considered where chip fragmentation and abrasive wear are primary concerns; for alternative materials or harder alloys, select grades optimised for those substrates. For further data or assistance on integration into existing tool systems, Metav Werkzeuge can advise on cutting parameters and holder compatibility.

Contact Metav Werkzeuge for application-specific recommendations and ordering: info@metav-werkzeuge.com or call +49 2822 7131930 to discuss the TNMU160508R-G27 WKK25G and suitable toolholders

Technical Data

• Article number: TNMU160508R-G27-WKK25G-WALTER
• Product: Fräswendeschneidplatte (milling indexable insert)
• Manufacturer: Walter Tools
• Series: Tiger·tec Gold
• Grade: WKK25G

Numbers / Facts

• Plate form: Triangle 60°
• Plate size: 16
• Plate thickness: 05
• Corner radius: 0.8 mm
• Relief angle: 0° (negative)
• Chipbreaker: G27
• Tolerance class: M

Special features / Designs

• Coating: Tiger·tec Gold
• Substrate: coated cemented carbide
• Material suitability: cast iron
• Execution: U
• Application focus: abrasive cast-iron machining

FAQ

What materials is this insert intended for?
The TNMU160508R-G27 WKK25G insert from Walter Tools is tailored for machining cast iron, with a grade and chipbreaker designed to handle abrasive and short-breaking chips.

How does the Tiger·tec Gold coating benefit tool life?
The Tiger·tec Gold coating on the TNMU160508R-G27 WKK25G reduces abrasive wear and stabilises the cutting edge, increasing life under typical cast-iron cutting regimes.

Which machine operations suit this triangular insert?
The triangular 60° form of the TNMU160508R-G27 WKK25G is suitable for face and shoulder milling operations where stable clamping and consistent chip control are required.

Can this insert handle interrupted cuts or heavy depths of cut?
Yes; the negative relief and robust geometry of the TNMU160508R-G27 WKK25G help maintain edge security during interrupted cuts and when higher tool engagement is necessary.

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

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