SPMW09T308-RK6 WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of high process stability, optimised chip control and robust edge strength to reduce tool changes and increase throughput in cast iron turning. Benefit from the reliable performance of a Walter Tools grade designed specifically for abrasive cast materials and request further advice from Metav Werkzeuge if needed.

SPMW09T308-RK6 WKK20S indexable turning insert — RK6 chipbreaker for cast iron, Walter Tools

The SPMW09T308-RK6 WKK20S is an indexable turning insert engineered for productive machining of cast iron, pairing a robust square 90° geometry with a Tiger·tec Silver coated carbide grade for consistent results in abrasive applications

• Tiger·tec Silver coating for reliable wear resistance
• Optimised RK6 chipbreaker for cast iron chips
• Square 90° insert with 0.8 mm corner radius
• Tolerance class M for repeatable seating and interchangeability

Increased process stability for abrasive cast iron turning

The Tiger·tec Silver WKK20S grade is developed for the specific demands of cast iron: abrasive wear and frequently short, breaking chips. The coated carbide construction provides a balance between wear resistance and toughness, which reduces flank and crater wear during sustained operation. As a result, machining continuity improves and the need for unscheduled tool changes is lowered, yielding a measurable boost in shop-floor productivity and consistency.

Reliable chip control that shortens cycle times

The RK6 chipbreaker geometry is optimised for the typical chip forms of cast iron, promoting short, controllable chips that evacuate reliably from the cutting zone. Combined with the insert’s square 90° form and 0.8 mm corner radius, this results in stable cutting forces and predictable tool behaviour. For production environments, this translates into fewer interruptions, more stable surface finish and the potential to increase feed rates while maintaining component quality.

Robust edge geometry for repeatable performance

The insert’s 11° free angle and the square configuration deliver a strong cutting edge that resists chipping under interrupted cuts and varying depths of cut. The 0.8 mm corner radius balances edge strength with the ability to achieve the desired part geometry. Tolerance class M ensures consistent seating in pockets, supporting repeatable indexing and quick changes, which helps maintain cycle-to-cycle accuracy across tool life.

For tailored recommendations on integrating Walter Tools Tiger·tec Silver inserts into production, contact Metav Werkzeuge for application advice and availability — eMail: info@metav-werkzeuge.com — Tel: +49 2822 7131930

Technical Data

• SKU: SPMW09T308-RK6-WKK20S-WALTER
• Designation: SPMW09T308-RK6 WKK20S
• Product type: Indexable turning insert
• Brand: Walter Tools

Facts

• Free angle: 11°
• Corner radius: 0.8 mm
• Insert shape: Square 90°
• Size designation: 09
• Thickness: T3
• Chipbreaker: RK6
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Grade: WKK20S (coated carbide)
• Application: Cast iron (ISO group K)
• Geometry: square 90° for strong cutting edge
• Suitability: designed for abrasive cast materials

FAQ

What materials is this insert optimised for?
The insert is specifically optimised for machining cast iron; the WKK20S grade and RK6 chipbreaker are tuned to handle abrasive wear and short, breaking chips typical of cast materials.

How does the Tiger·tec Silver coating benefit performance?
The Tiger·tec Silver coating on the WKK20S grade enhances wear resistance and temperature tolerance, extending effective tool life in demanding cast iron operations and improving process reliability.

Can the insert withstand interrupted cuts and heavy roughing?
Yes, the square 90° geometry combined with a 0.8 mm corner radius provides a robust edge capable of withstanding interruptions and higher cutting loads while maintaining edge integrity.

Is the insert compatible with standard toolholders for SPMW-style inserts?
The designation and tolerance class M indicate standard dimensions and seating accuracy for SPMW-style pockets; compatibility depends on the holder matching the SPMW09T308 form.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and registered trademarks are mentioned for explanation only. There is no connection between our company and the named brands. The offered article is original factory-new goods of the manufacturer Walter Tools.