SPMW09T308-A57 WKP25S Wendeplatten - Walter Tools

Take advantage of the combination of a high‑performance WKP25S grade and the Tiger‑tec Silver coating for productive machining of steel and cast iron; the A57 chipbreaker and stable 11° relief ensure controlled chips and consistent surface quality. Order the insert directly via Metav Werkzeuge or consult our team for application advice.

SPMW09T308-A57 WKP25S square 90° indexable milling insert by Walter Tools — Tiger‑tec Silver, A57 chipbreaker

The SPMW09T308-A57 WKP25S is a square 90° indexable milling insert designed for high‑productivity machining of steel and cast iron in medium to heavy cutting conditions.

• Square 90° insert — 0.8 mm corner radius
• Tiger‑tec Silver coating technology
• Optimised A57 chipbreaker for steel and cast iron
• Relief angle 11° for stable cutting performance

Consistent machining performance with a high‑productivity grade

The combination of the WKP25S grade and the Tiger‑tec Silver coating provides a balance of wear resistance and toughness that supports long tool life under industrial workloads. The coated carbide substrate is engineered for the thermal and mechanical demands of ISO P (steel) and ISO K (cast iron) families, enabling reliable performance during continuous operation. This results in fewer indexings and more uptime on the machine, which contributes directly to process stability and predictable production throughput.

Precision geometry for repeatable edge strength and surface finish

A square 90° geometry with a 0.8 mm corner radius and an 11° relief angle delivers robust cutting edges that resist chipping while maintaining a clean surface quality. The combination of geometry and clearance reduces vibration and distributes cutting forces more evenly, which helps to stabilise the machining process in interrupted and continuous cuts. For applications requiring consistent dimensional accuracy, this geometry supports reproducible results across batches and tool changes.

Controlled chip formation and efficient material removal

The A57 chipbreaker is optimised for the typical chip forms encountered when machining steel and cast iron, promoting short, manageable chips and minimising recutting. Improved chip control reduces the risk of tool damage and workpiece marking, while aiding coolant access and heat dissipation at the cut. The insert’s design supports efficient material removal rates without compromising surface integrity, making it suitable for both roughing and semi‑finishing operations where productivity and part quality are both priorities.

Practical integration and handling for workshop efficiency

With a T3 thickness and size 09 format, the insert is compatible with standard square indexable milling bodies and clamping systems, simplifying tool assembly and inventory management. The ISO designation SPMW09T308‑A57 clarifies insert fitment and ensures correct replacement ordering. As a Walter Tools product from the Tiger‑tec Silver series, the insert benefits from established manufacturing standards and traceable quality control, supporting predictable tool performance and straightforward integration into established tooling systems.

Contact Metav Werkzeuge for technical pairing recommendations and secure original Walter Tools inserts through our distribution network, or request personalised cutting data for specific materials and machines.

Technical Data

• SKU: SPMW09T308-A57-WKP25S-WALTER
• Description: Fräswendeschneidplatte SPMW09T308-A57 WKP25S Walter Tools
• Designation: SPMW09T308-A57 WKP25S
• Base designation: SPMW09T308-A57
• Series: Tiger‑tec Silver
• Grade: WKP25S
• Manufacturer: Walter Tools

Facts

• Corner radius: 0.8 mm
• Relief angle / free angle: 11°
• Insert size: 09
• Thickness: T3
• Shape: Square 90°

Special features

• Coating / technology: Tiger‑tec Silver
• Chipbreaker: A57
• Material application: steel (P) and cast iron (K)
• Tolerance class: M
• Product type: indexable milling insert

FAQ

What materials is this insert suitable for?
The insert is intended for machining steel and cast iron; the WKP25S grade and Tiger‑tec Silver coating provide a balance of wear resistance and toughness for ISO P and ISO K groups.

How does the A57 chipbreaker affect machining?
The A57 chipbreaker promotes short, controlled chips and improved chip evacuation, which reduces the chance of recutting and supports consistent surface quality with the SPMW09T308‑A57 WKP25S insert.

Which cutter bodies accept this insert size and format?
The SPMW09T308‑A57 designation corresponds to a square 90° insert, size 09, thickness T3 and is compatible with milling bodies designed for standard S‑type square indexable inserts.

Is the insert suitable for roughing and finishing operations?
Yes; the combination of geometry, 0.8 mm corner radius and the WKP25S grade makes the insert applicable for both productive roughing and controlled semi‑finishing tasks, depending on cutting data and machine stability.

Manufacturer / Responsible: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen, Germany, info@walter-tools.com

Protected trademarks and trade names are the property of their respective owners. Brand names and registered trademarks are used solely for clarification and comparison; there is no affiliation between Metav Werkzeuge and the mentioned manufacturers. The offered article is an original, factory‑new product of the manufacturer.