LNHU090404R-L55T WKK25G WKK25G Wendeplatten - Walter Tools

Take advantage of the Tiger·tec Gold coating and the wear-resistant WKK25G grade together with the stable negative rake geometry to increase uptime and reduce tool changes; order the insert directly via Metav Werkzeuge or consult our team for application advice.

LNHU090404R-L55T WKK25G milling indexable insert, Tiger·tec Gold, for cast iron – Walter Tools

LNHU090404R-L55G is a rectangular milling insert optimised for cast iron applications with a Tiger·tec Gold coating and a robust L55T chipbreaker

• Tiger·tec Gold coating for high wear resistance
• Optimised for cast iron machining
• Negative 0° rake for stable cutting
• Corner radius 0.4 mm for predictable edge strength

Longer tool life and steady performance for abrasive cast iron work

The combination of the Tiger·tec Gold coating and the WKK25G grade is engineered for cast iron, where abrasive wear and short, breaking chips are common. The coated cemented carbide substrate provides improved wear resistance, helping to extend tool life and reduce the frequency of index changes. This results in fewer interruptions to the production run and a clearer return on tooling investment. For shops moving from uncoated grades, the coating technology offers a measurable improvement in consistent cutting performance under abrasive conditions.

Stable geometry for reliable chip control and surface quality

A negative 0° rake and a defined corner radius 0.4 mm create a cutting geometry that favours stability in interrupted or heavy milling of cast iron. The chipbreaker L55T promotes controlled chip formation, reducing the risk of tangling and improving surface finish. In practice, the negative rake lowers the tendency for aggressive cutting edge wear and supports predictable cutting forces, which is especially beneficial on rugged cast-iron components and during heavy-duty axial engagement. These features combine to deliver repeatable results and reduced rework.

Practical insert format that integrates easily and saves cost

The rectangular, indexable insert design with size 09 and thickness 04 simplifies handling and mounting in compatible cutter bodies. Rectangular inserts offer straightforward clamping and a stable support surface, which helps maintain concentricity and repeatability in milling operations. Reduced downtime for tool changes and the ability to rotate or replace worn faces quickly contribute to lower operating costs. Where inventory rationalisation is a priority, the compatibility of these inserts with common toolholders makes them a pragmatic choice for production-oriented machine shops.

For detailed application guidance or to procure the LNHU090404R-L55T WKK25G from Walter Tools, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 to discuss suitability for specific cast iron operations

Technical Data

• Article number: LNHU090404R-L55T-WKK25G-WALTER
• Designation: LNHU090404R-L55T WKK25G
• Product type: Milling indexable insert
• Brand: Walter Tools

Facts

• Plate size: 09
• Plate thickness: 04
• Corner radius: 0.4 mm
• Rake angle: 0° (negative)
• Tolerance class: H

Special features

• Series: Tiger·tec Gold
• Grade: WKK25G (coated cemented carbide)
• Chipbreaker: L55T
• Shape: Rectangular
• Application: Suitable for cast iron machining

FAQ

What work materials is this insert designed for?
The LNHU090404R-L55T WKK25G insert from Walter Tools is designed primarily for cast iron applications and is optimised for abrasive, breaking-chip behaviour typical of those materials.

How does the Tiger·tec Gold coating improve performance?
The Tiger·tec Gold coating on the WKK25G grade reduces abrasive wear and improves tool life, enabling longer cutting intervals and more consistent surface quality when machining cast iron.

What does a negative 0° rake mean in practice?
A negative 0° rake provides a more robust cutting edge and increased stability during interrupted cuts, which helps to maintain consistent cutting forces and extend edge life on demanding cast-iron jobs.

Is chip control satisfactory for medium-depth milling?
Yes. The chipbreaker L55T is designed to promote reliable chip separation in cast iron, reducing the risk of entanglement and improving surface finish in medium to heavy milling passes.

Can the insert be used in common cutter bodies and indexable systems?
The rectangular format and standard size 09 / thickness 04 make the insert compatible with many conventional milling cutter bodies that accept this code, facilitating straightforward integration into existing tooling systems.

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

Geschützte Markenzeichen und Warenbezeichnungen liegen im Recht ihrer jeweiligen Eigentümer. Markennamen und geschützte Warenzeichen werden ausschließlich zu Erklärungszwecken genannt. Es besteht keinerlei Verbindung zwischen unserem Unternehmen und den genannten Marken. Es handelt sich bei dem angebotenen Artikel um originale fabrikneue Waren des Herstellers.