LNMU090404R-L55T WKK25G Wendeplatten - Walter Tools

Take advantage of the combination of Tiger‑tec Gold wear resistance, a dedicated WKK25G grade for abrasive cast‑iron machining and the controlled chip geometry of the L55T breaker for steady production results; order directly via Metav Werkzeuge or consult the team for cutting data and process advice.

LNMU090404R-L55T WKK25G – Rectangular milling insert LNMU090404R-L55T for cast iron by Walter Tools

LNMU090404R-L55G is a compact rectangular milling insert optimised for abrasive cast‑iron applications and designed to deliver process stability in series production.

• Tiger‑tec Gold coating for high wear resistance
• Optimised for cast iron machining (ISO group K)
• Rectangular insert with 0.4 mm corner radius
• L55T chipbreaker for controlled chip formation

Improve uptime with a wear‑resistant coating and grade

The combination of Tiger‑tec Gold coating and the WKK25G coated‑carbide grade offers enhanced resistance to abrasive wear, which is crucial when machining cast components. This means longer tool life and fewer indexings per workpiece, translating into higher productivity and reduced process interruptions. The coating technology also supports consistent cutting forces, helping to maintain machining parameters across batches and reduce the need for frequent readjustment.

Reliable chip control for safer, predictable machining

A well‑engineered L55T chipbreaker delivers controlled chip formation when working with cast iron, where short, brittle chips are common. The result is better evacuation from the cut and reduced risk of chip re‑cutting or surface damage. Combined with the 0.4 mm corner radius, the geometry balances cutting edge strength with acceptable surface finish, enabling dependable performance during medium‑to‑heavy milling operations.

Robust geometry for process stability and clamping security

The rectangular form factor and a 0° negative rake angle create a robust cutting edge that is less prone to chipping during interrupted cuts or heavy engagement. This geometry supports stable cutting conditions and simplifies insert clamping requirements, helping to maintain repeatable results on automated milling machines. As a consequence, cycle times become more predictable and tool management becomes easier in a production environment.

Tailored for cast‑iron applications to increase throughput

Designed for ISO group K, the insert is particularly suited to abrasive cast‑iron alloys. The WKK25G grade is tuned to handle the frequent short chips and high abrasive action of these materials, enabling operators to push for higher metal removal rates without sacrificing edge life. For manufacturing teams seeking consistent throughput in cast‑iron parts, this variant provides a balanced combination of life and cutting performance.

Practical selection and integration guidance

For integration into existing toolholders, use the specified insert designation and confirm clamping compatibility with the LNMU090404R‑L55T geometry. For best results, pair the insert with cutting parameters recommended for cast iron tooling—moderate cutting speeds with stable feeds—and consider roughing passes that leverage the insert’s robust edge. If additional cutting data is required, technical consultation is available to match insert selection to specific machine and material combinations.

Contact Metav Werkzeuge for tailored cutting data and to source the Walter Tools LNMU090404R-L55T WKK25G insert for cast‑iron machining, and request application support from our specialists today

Technical data

• SKU: LNMU090404R-L55T-WKK25G-WALTER
• Label: Fräswendeschneidplatte LNMU090404R-L55T WKK25G Walter Tools
• Brand: Walter Tools
• Series: Tiger‑tec Gold
• Grade: WKK25G
• Designation: LNMU090404R-L55T

Facts

• Insert size: 09
• Thickness: 04
• Corner radius: 0.4 mm
• Rake angle: 0° (negative)
• Tolerance class: M
• Breaker: L55T

Special features

• Rectangular insert form
• Coated carbide grade (WKK25G)
• Optimised for ISO group K (cast iron)
• Designed for abrasive wear resistance
• Stable chip formation and process security

FAQ

What materials is this insert best suited for?
The Walter Tools LNMU090404R-L55T WKK25G insert is optimised for cast iron (ISO group K) and provides abrasion‑resistant performance for brittle, short‑chipping materials.

How does the Tiger‑tec Gold coating benefit production?
The Tiger‑tec Gold coating on the LNMU090404R-L55T insert reduces abrasive wear and helps maintain cutting edge integrity, extending life and improving consistency in series machining.

What does the L55T chipbreaker achieve?
The L55T chipbreaker produces controlled, short chips in cast‑iron cutting, improving evacuation and reducing the risk of surface damage during milling operations.

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

Die Walter AG (Markenauftritt: Walter Tools) mit Hauptsitz in Tübingen gehört zu den weltweit führenden Herstellern von Präzisionswerkzeugen für die Metallbearbeitung und ist Teil des schwedischen Sandvik‑Konzerns. 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.