SNMG090308-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of Tiger·tec Silver wear resistance, the WKK20S grade tuned for cast iron and the MK5 chipbreaker to secure stable, productive turning of abrasive cast materials; order directly via Metav Werkzeuge or request application advice from the consultants.

SNMG090308-MK5 WKK20S Drehwendeschneidplatte — Tiger·tec Silver, optimized for cast iron (Walter Tools)

The SNMG090308-MK5 WKK20S is a square indexable insert designed for robust and reliable machining of cast iron, combining a Tiger·tec Silver coating with an MK5 chipbreaker for controlled, short chips.

• Tiger·tec Silver coating for enhanced wear resistance
• Optimised for machining cast iron (ISO K)
• Square 90° insert, 0.8 mm corner radius
• MK5 chipbreaker for controlled, short chips

Longer tool life and predictable process performance

The combination of the Tiger·tec Silver coating and the WKK20S grade is engineered to resist the abrasive wear typical of cast iron machining, which translates into longer service intervals and fewer insert changes. The coated carbide grade is tuned for the short, brittle chips produced when turning cast materials, so the cutting edge maintains geometry under cyclical thermal and mechanical loads. For production environments where repeatability and reduced setup downtime are priorities, this insert contributes directly to a more consistent machining process and lower overall tooling consumption.

Stable cutting geometry for robust heavy cuts

A square 90° shape, a 0° rake (negative) geometry and a 0.8 mm corner radius combine to deliver strong edge support during interrupted cuts and grooving operations. The insert’s geometry provides a stable cutting line and improves edge security where vibrations or impact loads are present. Tolerance class M ensures predictable seating and alignment in compatible toolholders, supporting consistent chip thickness and surface integrity even under demanding feed and depth-of-cut conditions.

Controlled chips and improved surface quality

The MK5 chipbreaker is optimised to produce short, segmented chips when machining cast iron, reducing entanglement and simplifying chip evacuation. Controlled chips lower the risk of tool damage and improve operator safety while helping to maintain a steady surface finish. In practice, the chip control characteristic reduces interruptions for manual chip clearing and supports higher uninterrupted cutting times, which is beneficial in automated or lights-out machining scenarios.

Practical integration and handling in production

Designated as SNMG090308-MK5, the insert is compatible with holders that accept the SNMG geometry and can be integrated into existing turning setups with standard clamping systems. The coated grade and chipbreaker combination is suited to serial production as well as single-shift workshops that require dependable performance for cast iron components. Specification-driven selection—focusing on coating, grade and chipbreaker—enables straightforward tool choice and simplifies inventory management for operations processing abrasive cast materials.

Contact Metav Werkzeuge for tailored recommendations on Walter Tools Tiger·tec Silver inserts and to discuss suitability for specific cast iron applications: info@metav-werkzeuge.com • +49 2822 7131930

Technical Data

• Article number: SNMG090308-MK5-WKK20S-WALTER
• Product name: SNMG090308-MK5 WKK20S
• Product type: Drehwendeschneidplatte
• Manufacturer: Walter Tools
• Series: Tiger·tec Silver
• Grade: WKK20S

Facts

• Insert size: 09
• Insert thickness: 03
• Corner radius: 0.8 mm
• Insert shape: Square 90°
• Rake: 0° (negative)
• Chipbreaker: MK5
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver
• Material application: cast iron (ISO K)
• Coated carbide grade
• Optimised for short, breaking chips
• Designed for productive cast-iron turning

FAQ

What materials is this insert intended for?
The SNMG090308-MK5 WKK20S is designed specifically for machining cast iron in accordance with the ISO K designation; the WKK20S grade and Tiger·tec Silver coating address abrasive wear and short-chip behaviour.

How does the MK5 chipbreaker affect machining of cast iron?
The MK5 chipbreaker promotes short, segmented chips when turning cast iron, improving chip control, reducing entanglement and supporting a stable surface finish with fewer interruptions.

Is the insert suitable for interrupted cuts and heavy feeds?
Yes. The square 90° geometry, 0° negative rake and 0.8 mm corner radius provide strong edge support and stability for interrupted cuts and heavier radial engagement.

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

The Walter AG (brand: Walter Tools) with head office in Tübingen is one of the world’s leading manufacturers of precision tools for metalworking and forms part of the Swedish Sandvik Group. Protected trademarks and trade names remain the property of their respective owners. The mentioned brand name is used solely for explanation. The offered item is original, factory-new merchandise from the manufacturer.