LNHU080404-B57T WKK25G Wendeplatten - Walter Tools

Take advantage of the combination of durable coated carbide, precise geometry and excellent chip control to achieve consistent, productive cast iron milling. The insert's negative rake and robust chipbreaker deliver stable cutting and long tool life; order via Metav Werkzeuge or consult our specialists for application support.

LNHU080404-B57T WKK25G — Indexable milling insert, Tiger‑tec Gold for cast iron — Walter Tools

A LNHU080404-B57G WKK25G indexable milling insert engineered for high‑output machining of cast iron components, offering consistent wear resistance and reliable chip control in demanding industrial applications.

• Tiger‑tec Gold coating for extended wear resistance
• Optimised for cast iron machining (ISO K)
• Rectangular insert with 0.4 mm corner radius
• Negative 0° rake angle for robust cutting

Improved productivity through advanced coating and grade

The combination of the Tiger‑tec Gold coating and the WKK25G grade provides a balanced performance for abrasive cast iron work. The specialised coated carbide substrate reduces flank wear under interrupted cuts and short, breaking chips typical of cast iron, which in turn extends tool life and reduces machining downtime. For operations requiring repeatable results on grey and ductile cast iron, this configuration delivers measurable gains in process stability.

Robust geometry that enhances chip control and surface quality

A rectangular insert with a 0.4 mm corner radius and B57T chipbreaker offers controlled chip formation and evacuation when machining cast iron. The negative 0° rake angle increases cutting edge strength, making the insert suitable for heavier feeds and interrupted cuts without compromising surface finish. These geometric choices translate into fewer tool changes and more predictable component tolerances during serial production.

Application guidance and material compatibility

Designed specifically for the ISO group K (cast iron), the insert excels where high abrasive wear is expected. The WKK25G grade is optimised for the short, brittle chips of cast materials and provides a blend of hardness and fracture resistance. When paired with suitable cutter bodies and correct cutting parameters, the insert improves cycle times and delivers a consistent workpiece quality that supports lean manufacturing workflows.

Durable design for industrial milling demands

The insert’s construction supports high‑productivity milling strategies: the coated surface resists thermal and mechanical wear, while the robust cutting edge maintains integrity under variable loads. This makes the component a dependable choice for series production and repair tasks where repeatability and tool life are priorities. Integration into established tooling systems is straightforward thanks to the standard LNHU form factor.

For tailored advice on integrating this Walter Tools Tiger‑tec Gold insert into specific machining processes or to confirm suitability for a particular cast iron grade, contact Metav Werkzeuge for application support and availability: info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: LNHU080404-B57T-WKK25G-WALTER
• Designation: LNHU080404-B57T WKK25G
• Manufacturer: Walter Tools

Core measurements

• Size: 08
• Thickness: 04
• Corner radius: 0.4 mm
• Rake angle: 0° (negative)
• Shape: Rectangular
• Tolerance class: H

Materials and special features

• Series: Tiger‑tec Gold
• Grade: WKK25G
• Chipbreaker: B57T
• Material group: K (cast iron)
• Coated carbide insert, suited to abrasive cast iron machining

FAQ

What materials is this insert suitable for?
The insert is designed for cast iron (ISO group K); the WKK25G grade and Tiger‑tec Gold coating optimise performance on abrasive cast materials.

How does the B57T chipbreaker help in milling?
The B57T chipbreaker shapes short, brittle chips typical of cast iron, improving evacuation and reducing the risk of built‑up edge, which helps maintain surface finish and tool life.

What advantages does the negative 0° rake angle provide?
A 0° (negative) rake angle increases cutting edge strength and resistance to fracturing, making the insert robust under interrupted cuts and heavier feed conditions.

Is this insert compatible with standard LNHU toolholders?
The insert follows the LNHU form factor and is intended for use in compatible indexable milling holders that accept rectangular insert geometry.

How does the Tiger‑tec Gold coating affect productivity?
The Tiger‑tec Gold coating enhances wear resistance and thermal stability, leading to longer tool life and more consistent machining cycles, especially in series production.

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

Walter AG (brand: Walter Tools) is part of the Sandvik Group and is recognised for its precision cutting tools for metalworking. Protected trademarks and trade names are the property of their respective owners. There is no affiliation between our company and the mentioned brands; the offered article is original and factory‑new.