LNMU150812-F57T WKP25S Wendeplatten - Walter Tools

Take advantage of the combination of Walter Tools' proven Tiger·tec Silver coating, reliable performance on steel and cast iron, and a robust 1.2 mm corner radius for consistent chip control and long tool life; order the inserts directly via Metav Werkzeuge or consult the team for tailored cutting data.

LNMU150812-F57T WKP25S indexable milling insert – Tiger·tec Silver for steel and cast iron (Walter Tools)

The LNMU150812-F57T WKP25S is a negative‑rake rectangular indexable insert engineered for productive face and slot milling in steel and cast iron applications.

• Tiger·tec Silver coating for long tool life
• Suitable for steel and cast iron machining
• Negative rake, 0° clearance for robust cuts
• Rectangular form with 1.2 mm corner radius

Increased reliability through modern coating technology

The Tiger·tec Silver series combines a coated carbide substrate with application‑driven surface engineering to reduce abrasive wear and extend edge life. For mixed production where both unalloyed and alloyed steel and cast materials are present, the insert’s WKP25S grade provides stable performance under the thermal and mechanical stresses typical of these workpieces. The coating reduces flank wear and helps maintain cutting security during longer tool cycles, which supports predictable tool change intervals and steady production output.

Robust geometry for consistent chip control and edge security

The rectangular geometry with a 1.2 mm corner radius and a negative 0° rake forms a resilient cutting edge suited to interrupted cuts and higher radial engagement. The integrated chipbreaker F57T aids controlled chip formation in the P and K ISO groups, reducing the risk of long, entangling chips and improving surface finish consistency. This combination of geometry and chip control is particularly beneficial when machining tougher cast components or when process reliability is prioritised over purely aggressive removal rates.

Practical advantages for process optimisation

By selecting this grade and geometry, shops can expect improved repeatability and fewer unplanned interventions. The insert’s specification as an indexable milling grade simplifies inventory management: one insert covers several common turning and milling tasks on steel and cast iron, lowering tool complexity at the toolroom level. For engineers planning toolpaths, the negative relief and stable cutting edge make the grade suitable for conservative feed strategies that favour surface integrity and dimensional stability rather than maximum material removal per pass.

Guidance for integration into production

When adopting this insert into an existing tool system, match clamping and seat conditions to the ISO designation LNMU150812-F57T WKP25S and confirm the cutter body is compatible with rectangular inserts of the stated thickness and form. The coated carbide substrate of the Tiger·tec Silver series responds well to controlled cooling regimes; for best results, align coolant strategy with the machine’s capabilities and the workpiece material to balance thermal load and edge protection. Documentation for the insert’s intended use in ISO P (steel) and K (cast iron) groups supports straightforward selection in mixed‑material environments.

Contact Metav Werkzeuge to obtain cutting data sheets, confirm cutter compatibility and specify the right Walter Tools Tiger·tec Silver inserts for the intended application

Technical Data

• Article number: LNMU150812-F57T-WKP25S-WALTER
• SKU: LNMU150812-F57T-WKP25S-WALTER
• ISO designation: LNMU150812-F57T WKP25S
• Series: Tiger·tec Silver
• Grade: WKP25S
• Form: Rectangular
• Corner radius: 1.2 mm
• Relief / Rake: 0° (negative)
• Chipbreaker: F57T
• Thickness code: 08
• Size: 15

Facts

• Material suitability: Steel (ISO P)
• Material suitability: Cast iron (ISO K)
• Coating: Tiger·tec Silver (coated carbide)
• Tolerance class: M
• Execution: U

Special features

• Coated carbide grade for abrasive resistance
• Designed for stable chip formation in P and K groups
• Rectangular insert geometry for robust cutting edges
• Negative rake for heavy‑duty engagement

FAQ

What materials is this insert suitable for?
The LNMU150812-F57T WKP25S is developed for machining steel (ISO P) and cast iron (ISO K), with the Tiger·tec Silver coating optimised for those material families.

How does the 0° (negative) rake affect machining?
A negative 0° rake increases edge strength and reduces the tendency to chip on interrupted cuts, making the insert a good choice for heavy engagement and unstable cutting conditions.

What benefit does the 1.2 mm corner radius provide?
The 1.2 mm corner radius increases edge robustness and contributes to improved surface finish and longer edge life under moderate feed rates, helping to maintain dimensional stability.

Which chipbreaker is used and why does it matter?
The chipbreaker F57T is tuned to produce short, controllable chips in both steel and cast iron, aiding chip evacuation and reducing the risk of long, tangled chips in milling operations.

Is this insert part of a known series and what does that mean for performance?
This insert belongs to the Tiger·tec Silver series by Walter Tools; the series emphasises wear resistance and consistent cutting performance across a broad range of industrial steels and cast materials.

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

Walter AG (marketed as Walter Tools) is one of the world’s leading manufacturers of precision tools for metalworking and is part of the Sandvik Group. Protected trademarks and trade names remain the property of their respective owners. Brand names and registered trademarks are used solely for explanation. There is no affiliation between our company and the trademark owners. The offered item is an original, factory‑new product of the manufacturer.