LNHU120608-F57T WKP25S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coated carbide and a dedicated F57T chipbreaker to achieve consistent chip control and extended tool life when machining steel and cast iron; order directly via Metav Werkzeuge or consult our specialists for application support.

LNHU120608-F57T WKP25S — Milling indexable insert (rectangular) for steel and cast iron, Walter Tools

The LNHU120608-F57T WKP25S is a rectangular milling insert from the Tiger·tec Silver series, developed for productive machining of steels and cast irons with reliable wear resistance and predictable performance.

Tiger·tec Silver coated carbide grade WKP25S
Optimised for steel and cast iron machining
Rectangular insert with 0.8 mm corner radius
Negative 0° rake and F57T chipbreaker

Durable coated grade for demanding milling operations

The WKP25S grade from the Tiger·tec Silver range is a coated carbide designed to balance wear resistance and toughness for continuous, industrial milling. As a coated cutting grade, it reduces flank and crater wear under the thermal loads typical when machining steel and the abrasive conditions of cast iron. This combination results in longer tool life and fewer index changes, which supports higher uptime and lower unit cost per component. For production environments seeking steady cycle times, the proven coating technology helps maintain cutting-edge integrity over extended runs.

Stable geometry and precise chip control for consistent surfaces

The rectangular geometry with a 0.8 mm corner radius and the dedicated F57T chipbreaker provide predictable chip formation and evacuation. The insert’s negative 0° rake increases cutting edge robustness, reducing the risk of chipping during interrupted cuts or heavy engagement. In practice, this means improved stability at higher feed rates and a more consistent surface finish, reducing downstream rework. The chipbreaker is tuned to the grade and geometry to produce short, controllable chips in cast iron while managing heat and continuous chips in steel, supporting both process reliability and operator safety.

Precision manufacturing for reliable toolholder integration

Manufactured to a tolerance class H, the insert ensures repeatable seating and clamping in standard rectangular toolholders. The rectangular form and execution code U denote a design that prioritises secure clamping and straightforward indexing. Such dimensional consistency reduces set-up variability and supports reproducible machining across multiple cutters. Where tight dimensional control and interchangeability are required, this consistency simplifies tool management and contributes to overall process security in both small-batch and serial production.

Application guidance to maximise productivity

Specified for ISO groups P and K, the insert is particularly suited to unalloyed and alloyed stainless applications in steel (P) and the abrasive, short-chipping behaviour of cast iron (K). As a coated grade engineered for these material families, the insert helps balance wear resistance and edge strength to deliver consistent component quality. For best results, select a toolbody that matches the rectangular insert seat and check clamping torque recommendations from the toolholder manufacturer; the grade’s strengths are most evident when combined with stable fixturing and adequate coolant or chip removal strategies. The coated carbide construction supports prolonged service life and predictable index changes, aiding planning for tool replenishment and inventory.

Contact Metav Werkzeuge for tailored advice on integrating Walter Tools Tiger·tec Silver inserts into existing processes; our consultants will recommend suitable toolholders, cutting strategies and grade selection for the LNHU120608-F57T WKP25S.

Technical Data

• SKU: LNHU120608-F57T-WKP25S-WALTER
• Designation: LNHU120608-F57T WKP25S
• Product type: Milling indexable insert
• Series: Tiger·tec Silver
• Grade: WKP25S
• Chipbreaker: F57T

Facts

• Plate size: 12
• Corner radius: 0.8 mm
• Thickness code: 06
• Free angle: 0° (negative)
• Tolerance class: H

Special features

• Coated carbide cutting grade
• Rectangular insert form
• Execution: U
• Material suitability: P / K (steel and cast iron)
• Optimised chip control for production milling

FAQ

Which materials is this insert suitable for?
The LNHU120608-F57T WKP25S from Walter Tools is formulated for ISO groups P and K, meaning it is suitable for machining steel (unalloyed and alloyed) and cast iron applications.

What benefits does the WKP25S grade offer?
WKP25S is a coated carbide grade within the Tiger·tec Silver family that provides enhanced wear resistance and edge stability for extended tool life when machining steel and cast iron.

How does the F57T chipbreaker influence performance?
The F57T chipbreaker promotes controlled chip formation and evacuation, reducing the risk of long, entangling chips in steel and producing short, manageable chips in cast iron, which improves both process reliability and surface quality.

What does the 0° negative rake mean for cutting?
A 0° (negative) rake increases the cutting edge’s robustness, making the insert more resistant to chipping during interrupted cutting and when encountering hard inclusions, at the cost of slightly higher cutting forces—beneficial for heavy-duty milling.

Is the insert suitable for all rectangular toolholders?
The insert’s dimensions and tolerance class H ensure accurate seating in compatible rectangular toolholders, but verification of seat geometry and clamping specifications with the chosen toolbody is recommended.

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

Protected trademarks and trade names are the property of their respective owners. Brand names are used solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The offered item is an original, factory-new product of the manufacturer.