TNMU11T308R-G27 WKK25G Wendeplatten - Walter Tools

Optimise cast-iron machining with a coated Tiger‑tec Gold grade and robust triangle geometry: reliable chip control, long tool life and consistent surface quality. Order the TNMU11T308R-G27 WKK25G milling indexable insert directly via Metav Werkzeuge or consult our specialists for process advice.

TNMU11T308R-G27 WKK25G — Milling indexable insert, Tiger‑tec Gold coating, for cast iron by Walter Tools

The TNMU11T308R-G27 WKK25G is a triangle 60° milling insert designed for productive cast‑iron machining; its coated carbide grade and dedicated chipformer ensure stable cutting and predictable tool life.

• Tiger‑tec Gold coating for extended life
• Optimised for cast iron machining (K)
• Triangle 60° insert with 0.8 mm radius
• Negative 0° rake for robust cutting

Consistent productivity through targeted grade and coating

The insert’s WKK25G grade, part of the Tiger‑tec Gold family, combines a wear‑resistant coating with a substrate engineered for abrasive cast materials. This results in stable wear behaviour and fewer unexpected tool changes, improving usable spindle time. The coating reduces adhesion and thermal impact during interrupted cuts common in cast‑iron operations, while the grade’s toughness maintains edge integrity under shock loads. For production-oriented environments this translates into measurable cycle‑time savings and more predictable tool‑life calculations.

Geometry that supports process reliability and surface finish

A triangle 60° form and a 0.8 mm corner radius provide a compromise between strength and accessible cutting edge for a variety of slotting and peripheral milling tasks. The negative 0° rake increases cutting edge robustness, reducing chipping in heavy engagement or unstable setups. The integrated G27 chipbreaker shapes short, controllable chips typical for cast iron, lowering the risk of re-cutting and improving surface quality. These geometric choices simplify parameter selection and reduce fixture sensitivity in mixed‑batch workplaces.

Practical benefits for workshop application and tool management

The insert’s specifications support easy integration into existing toolholders and standard clamping systems, enabling quick index changes and minimal downtime. The grade’s focus on cast‑iron abrasiveness minimises flank wear and affords consistent dimensional stability over multiple passes. Process planners benefit from straightforward feed and speed tuning: higher feeds at conservative depths take advantage of the insert’s stability, while the coating maintains edge condition under thermal spikes. For advice on parameter setup or compatibility with specific holders, professional consultation is available to ensure optimal results.

For detailed application advice on Walter Tools Tiger‑tec Gold inserts, contact Metav Werkzeuge — info@metav-werkzeuge.com | +49 2822 7131930 — to discuss the TNMU11T308R-G27 WKK25G for specific cast‑iron machining tasks

Technical Data

• SKU: TNMU11T308R-G27-WKK25G-WALTER
• Product name: TNMU11T308R-G27 WKK25G
• Manufacturer: Walter Tools
• Product type: Milling indexable insert

Facts

• Insert size: 11
• Thickness: T3
• Corner radius: 0.8 mm
• Geometry: Triangle 60°
• Rake angle: 0° (negative)
• Chipformer: G27
• Tolerance class: M

Special features

• Grade: WKK25G
• Series: Tiger‑tec Gold
• Coating: coated carbide
• Material application: cast iron (K)
• Execution: U

FAQ

What materials is this insert suitable for?
The TNMU11T308R-G27 WKK25G insert from Walter Tools is specifically optimised for cast iron (K) and is designed to handle the abrasive, short‑chipping behaviour typical of those materials.

How does the Tiger‑tec Gold coating affect performance?
The Tiger‑tec Gold coating on this coated carbide grade reduces adhesion and thermal wear, which extends edge life and supports consistent surface quality in cast‑iron machining.

What advantages does the triangle 60° form provide?
A triangle 60° shape with a 0.8 mm corner radius offers a strong cutting edge for heavy engagements while still allowing flexible use for slotting and peripheral milling operations.

Is the insert suitable for interrupted cuts and roughing?
Yes; the negative 0° rake and the robust WKK25G grade provide edge stability that resists chipping during interrupted cuts and roughing operations.

Which chipbreaker is integrated and what is its effect?
The integrated G27 chipbreaker produces short, controlled chips in cast‑iron applications, improving chip evacuation and reducing the risk of re‑cutting and surface defects.

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 trademarks are mentioned solely for explanatory purposes. There is no connection between our company and the named brands. The offered article is original, factory‑new goods of the manufacturer Walter Tools.