LNMU100508-B57T WKK25G WKK25G Wendeplatten - Walter Tools

Take advantage of the Tiger‑tec Gold grade and the B57T chipbreaker for productive cast‑iron machining, combined with a robust negative‑relief geometry for stable cutting. Order the insert directly via Metav Werkzeuge or ask the consultants for application support.

LNMU100508-B57T WKK25G — Milling insert, Tiger‑tec Gold for cast iron (B57T chipbreaker) by Walter Tools

LNMU100508-B57T WKK25G is a rectilinear milling insert designed for productive cast‑iron machining with a coated‑carbide grade from Walter Tools

• Tiger‑tec Gold coated carbide grade WKK25G
• Optimised B57T chipbreaker for cast iron
• 0° negative clearance for robust cutting
• 0.8 mm corner radius for controlled removal

Engineered for productive cast‑iron machining

The insert is based on the Tiger‑tec Gold technology and the WKK25G grade, a coated carbide composition tailored to abrasive wear and the short, breaking chips typical of cast materials. This combination delivers predictable tool life under interrupted and continuous milling, reducing downtime and increasing throughput. The design emphasises efficient chip formation and evacuation, making it suitable for repetitive, high‑volume tasks where consistent results are required. The grade balance supports a wide tool life window while maintaining surface quality on cast‑iron components.

Robust geometry for stable cutting and consistent surface finish

A dedicated B57T chipbreaker together with a 0° negative clearance geometry provides enhanced edge security during heavy engagement and interrupted cuts. The rectangular form and a 0.8 mm corner radius stabilise the cutting edge, reducing vibration and producing repeatable component tolerances. Together these features lower the risk of edge chipping on impact and deliver improved surface integrity, which is particularly important when subsequent finishing steps demand consistent bases for downstream operations.

Practical selection and process advantages for workshop and production

Selection of this grade and geometry reduces process variability: the coating and substrate resist abrasive wear in cast‑iron applications, while the chipformer assists with controlled fragmenting and removal of brittle chips. The insert is compatible with standard milling toolholders that accept the LNMU designation and is specified with tolerance class M for reliable interchangeability. For production environments seeking a balance between productivity and predictable wear behaviour, the combination of Walter Tools engineering and the Tiger‑tec Gold range offers a pragmatic, performance‑oriented choice.

For application advice or to specify LNMU100508-B57T WKK25G for a machining cell, contact Metav Werkzeuge for technical consultation at info@metav-werkzeuge.com or call +49 2822 7131930.

Technical Data

• SKU: LNMU100508-B57T-WKK25G-WALTER
• Designation: LNMU100508-B57T WKK25G
• Type: Milling insert
• Manufacturer: Walter Tools

Core technical data

• Plate size: 10
• Corner radius: 0.8 mm
• Thickness code: 05
• Clearance angle: 0° (negative)
• Shape: Rectangle

Special features

• Grade: WKK25G (Tiger‑tec Gold)
• Chipbreaker: B57T
• Series: Tiger‑tec Gold
• Application: Cast iron (ISO group K)
• Tolerance class: M
• Execution: U
• Coated carbide grade for abrasive wear resistance

FAQ

What materials is this insert intended for?
The insert is specified for cast‑iron machining (ISO group K) and the WKK25G grade is optimised for abrasive wear and the short, breaking chips typical of cast materials.

Which chipbreaker does this insert use and why does it matter?
This insert uses the B57T chipbreaker; it is designed to produce controlled chip fragmentation in cast‑iron operations, aiding evacuation and reducing recutting.

What does the 0° negative clearance mean for cutting performance?
A 0° negative clearance provides a more robust cutting edge under heavy engagement and interrupted cuts, improving edge stability and reducing the risk of premature chipping.

How does the 0.8 mm corner radius affect finishing?
A 0.8 mm corner radius balances edge strength and achievable surface finish; it helps dampen vibration while enabling acceptable contour precision for many milling tasks.

Is this insert part of a coated technology family?
Yes, the insert belongs to the Tiger‑tec Gold family; the coated carbide construction supports extended life and consistent performance in demanding cast‑iron applications.

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

Trademarks and product names are the property of their respective owners. Brand names and trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the named brands. The offered item is an original, brand‑new product from the manufacturer.