TNMU160516R-G27 WKK25G Wendeplatten - Walter Tools

Benefit from the combination of Tiger‑tec Gold coating and the WKK25G grade for reliable, wear-resistant performance in cast iron machining; the triangular 60° geometry and G27 chipbreaker ensure stable chip control and consistent surface quality. Order the insert directly via Metav Werkzeuge or consult our team for tailored cutting data.

TNMU160516R-G27 WKK25G milling indexable insert — Tiger‑tec Gold, for cast iron (Walter Tools)

TNMU160516R-G27 WKK25G is a coated milling indexable insert engineered for productive machining of cast iron components, combining a wear-resistant grade with geometry tuned for short, breaking chips

• Tiger‑tec Gold coated grade WKK25G
• Designed for cast iron machining
• Triangle 60° geometry for stability
• 0° negative rake with 1.6 mm radius

Boosted productivity for cast iron operations

The combination of a coated carbide grade and a geometry adapted to brittle materials results in faster, more reliable material removal when working with cast iron. The insert’s WKK25G grade, part of the Tiger‑tec Gold family, is formulated to resist abrasive wear typical of grey and nodular cast irons; this keeps cutting edges sharper for longer and reduces the frequency of index changes. The tangible benefit is improved throughput and reduced machine idle time, which supports leaner production cycles and clearer planning of tool-change intervals.

Coating and wear resistance that extend tool life

The multilayer coating technology of Tiger‑tec Gold provides a hard, thermally stable surface that mitigates abrasive wear under interrupted cutting conditions. That means more consistent performance over repeated passes and better preservation of the cutting edge in demanding cycles. The result is a lower cost per component through extended tool life and fewer regrinds, while still maintaining the surface finish and dimensional stability demanded in series production.

Geometry engineered for chip control and process stability

The triangle 60° insert shape combined with the G27 chipbreaker promotes reliable chip segmentation when machining cast iron, avoiding long, stringy swarf and reducing the risk of tool or workpiece damage. The 0° negative rake supports a robust cutting edge for interrupted cuts, while the 1.6 mm corner radius balances edge strength with the ability to achieve acceptable surface roughness. Together these features deliver stable chip formation and reduced vibration, which enhances repeatability in production environments.

Economic advantages and machining efficiency

Using a grade tailored to cast iron lowers the likelihood of premature wear and unexpected tool changes, which directly improves the machine’s productive time. Fewer insert changes and predictable wear behaviour enable better estimation of tool consumption and cost per part. The insert’s characteristics therefore support decisions based on process economy — higher uptime, consolidated tool stocks and simpler sorting of cutting data for similar tasks.

Typical applications and recommended scope

The insert is aimed at milling operations on cast iron components in automotive, pump housing, gearbox and general engineering series work where interrupted cuts and abrasive constituents are common. According to the grade’s design, prefer parameters that emphasise moderate cutting forces and stable feeds; the chipformer and geometry are especially effective for short, fracturing chips typical of cast iron alloys. For materials outside the cast iron group, consult cutting-data guidance to confirm suitability.

Handling, compatibility and inspection guidance

The insert is supplied in the TNMU160516R-G27 WKK25G specification and matches toolholders designed for triangular 60° indexable inserts; tolerance class M and execution U indicate standard mounting and seating requirements. Visual checks for coating integrity and flank wear are recommended at regular intervals to assess remaining life; consistent inspection helps to exploit the grade’s full potential and maintain process stability. Keep index changes aligned with production planning to capitalise on predictable tool-life behaviour.

For tailored cutting data and fast supply of Walter Tools Tiger‑tec Gold inserts, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 for precise recommendations and delivery options.

Technical Data

• Article number / SKU: TNMU160516R-G27-WKK25G-WALTER
• Model: TNMU160516R-G27 WKK25G
• Type: Fräswendeschneidplatte / milling indexable insert
• Brand: Walter Tools
• Series: Tiger‑tec Gold

Facts

• Shape: Dreieck 60° (Triangular 60°)
• Relief angle: 0° (negative)
• Corner radius: 1.6 mm
• Insert size: 16
• Thickness code: 05
• Tolerance class: M

Special features

• Grade: WKK25G (coated carbide)
• Chipbreaker: G27
• Execution: U
• Material application: Cast iron (K)
• Stable chip formation and optimised chip former
• Designed for abrasive wear resistance in cast iron

FAQ

Is this insert suitable for grey cast iron and nodular cast iron?
Yes. The TNMU160516R-G27 WKK25G insert is specifically designed for cast iron applications; the WKK25G grade and Tiger‑tec Gold coating address the abrasive wear and short, breaking chips typical of those materials.

What advantages does the Tiger‑tec Gold coating provide?
The Tiger‑tec Gold coating on the WKK25G grade offers improved thermal stability and abrasion resistance, which in turn extends cutting-edge life and helps maintain consistent surface quality during series milling.

How does the insert geometry affect chip control?
The triangular 60° shape combined with the G27 chipbreaker and a 1.6 mm corner radius promotes short, segmented chips and reduces vibration, improving process stability and repeatability in cast iron milling.

Can this insert be used for interrupted cuts?
Yes. The 0° negative rake and the robust corner radius provide a strong cutting edge suitable for interrupted machining typical in roughing operations.

What inspection routine is recommended to maximise tool life?
Regular visual checks for flank wear and coating degradation are recommended; replacing or indexing the insert at consistent wear levels ensures predictable performance and avoids sudden failures.

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 protected trade marks are mentioned solely for explanatory purposes. There is no connection between our company and the mentioned brands. The offered item is original and brand-new.