SNMG120408-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of high wear resistance, targeted chip control and a square 90° geometry for consistent turning of cast‑iron components; the coated carbide grade ensures dependable edge life in abrasive cast materials. Order the insert directly via Metav Werkzeuge or ask the consultants for application advice.

SNMG120408-MK5 WKK20S – indexable turning insert, cast‑iron grade, Walter Tools

The SNMG120408‑MK5 WKK20S is a square indexable turning insert designed for productive machining of cast iron with a Tiger·tec Silver coated carbide grade.

• High-performance Tiger·tec Silver grade WKK20S
• Optimised for abrasive cast‑iron machining
• MK5 chipbreaker for controlled, short chips
• Square 90° geometry with 0.8 mm corner radius

Consistent chip control and process stability for cast‑iron turning

The WKK20S grade, developed within the Tiger·tec Silver series, is matched to the specific demands of cast iron (ISO group K). Thanks to the MK5 chipbreaker, the insert produces short, predictable chips that reduce downtime caused by chip entanglement and simplify extraction. The combination of a robust chipformer and a coated carbide substrate supports steady material removal rates even where abrasive graphite and interrupted cutting conditions are present, which directly contributes to higher process reliability and reduced scrap rates.

Reliable wear resistance that extends productive tool life

A coated cemented‑carbide construction provides wear protection against the abrasive nature of cast components. The coating system and substrate pairing in this series aim at stable flank and crater wear behaviour, yielding repeatable edge life on serial operations. The 0° relief angle (negative rake) and 0.8 mm corner radius ensure a strong cutting edge and resistance to chipping in interrupted cuts. These features help maintain dimensional consistency and surface quality across longer tool cycles, improving the cost‑efficiency of turning operations.

Simple integration and clear specification for tool planning

The square 90° insert form with the designation SNMG120408‑MK5 fits standard toolholders for this geometry and allows straightforward replacement in existing tool assemblies. Specified to tolerance class M, the insert delivers predictable seating and repeatability in indexable tool systems. Data such as size, chipbreaker type and grade enable process planners to compare alternatives quickly and select cutting parameters that match machine capabilities and cycle requirements. The clear alignment with ISO material group K supports correct tool selection for cast‑iron workpieces.

Contact Metav Werkzeuge for tailored application advice, availability and to secure genuine Walter Tools SNMG120408‑MK5 WKK20S turning inserts for industrial use

Technical data

• SKU: SNMG120408-MK5-WKK20S-WALTER
• Designation: SNMG120408-MK5
• Product type: Indexable turning insert

Facts

• Insert size: 12
• Thickness code: 04
• Corner radius: 0.8 mm
• Relief angle: 0° (negative)
• Plate form: Square 90°
• Chipbreaker: MK5
• Grade: WKK20S
• Series: Tiger·tec Silver
• Tolerance class: M
• Execution: G

Special features

• Coated cemented carbide (beschichtetes Hartmetall)
• Optimised for cast‑iron machining (ISO group K)
• Designed for abrasive wear and short, breaking chips
• Stable cutting edge for interrupted cuts
• Suitable for productive and repeatable turning operations

FAQ

What materials is this insert suitable for?
The SNMG120408‑MK5 WKK20S from Walter Tools is optimised for cast iron (ISO group K); the grade and chipbreaker are tuned to handle abrasive cast materials and short, breaking chips.

How does the MK5 chipbreaker affect machining?
The MK5 chipbreaker delivers controlled, short chip formation that improves chip evacuation and reduces risk of chip interference, supporting more stable machining cycles with this insert.

Can the insert withstand interrupted cuts and tough cutting conditions?
Yes. The negative 0° relief angle together with a 0.8 mm corner radius provide a robust cutting edge that resists chipping in interrupted cuts, improving edge life under demanding conditions.

Is this grade part of a recognised series and what does that mean?
The insert belongs to the Tiger·tec Silver series; this denotes a coated carbide technology designed for consistent wear resistance and process stability in production environments.

Which insert designation should be ordered to match this item?
Order the SNMG120408‑MK5 WKK20S indexable turning insert (Walter Tools) to ensure the correct size, chipbreaker and grade for cast‑iron turning applications.

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

Protected trademarks and product names are the property of their respective owners. Walter Tools and related designations are mentioned for product identification and explanation only. There is no affiliation between Metav Werkzeuge and the named trademark owners. The offered item is an original, factory‑new product of Walter Tools.