CNMG120412-MW5 WKK10S WKK10S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, the WKK10S grade and the MW5 chipbreaker to achieve reliable, productive machining in cast iron; order the CNMG120412-MW5 WKK10S turning insert directly via Metav Werkzeuge or ask our consultants if needed

CNMG120412-MW5 WKK10S turning insert for cast iron — Rhombic 80°, Tiger·tec Silver (Walter Tools)

The CNMG120412-MW5 WKK10S is a coated carbide turning insert optimised for consistent performance in cast iron machining, combining a robust negative geometry with a chipbreaker tuned to short, controllable chips

• Tiger·tec Silver coating for high wear resistance
• MW5 chipbreaker optimised for cast iron chips
• Negative 0° rake for a stable cutting edge
• Rhombic 80° form with 1.2 mm corner radius

Consistent wear resistance for demanding cast iron applications

The combination of the Tiger·tec Silver coating and the WKK10S coated-carbide grade provides pronounced resistance to abrasive wear, which is typical for many cast iron operations. This translates into longer tool life and fewer interruptions for index changes, supporting continuous production. Because the grade and surface technology are tuned specifically for the ISO K group, the insert resists the frequent micro-abrasion and thermal load encountered when machining cast iron, helping to maintain dimensional stability and predictable replacement intervals.

Controlled chips and improved process reliability with the MW5 breaker

The integrated MW5 chipbreaker is designed to produce short, easily evacuable chips in cast iron, reducing the risk of entanglement and workpiece surface damage. Better chip control lowers the likelihood of unplanned stoppages and shortens cleaning cycles, which improves overall throughput. For operators new to the material class, the chip geometry reduces the need for constant intervention and supports a steadier machining rhythm on both lathes and automated turning centres.

Robust geometry for interrupted cuts and secure edge life

The insert’s Negative 0° rake and Rhombic 80° form offer a balance between strength and versatility: the geometry provides a secure cutting edge under variable cutting forces, while the corner radius 1.2 mm helps distribute load to avoid premature edge fracture. The profile, combined with a plate thickness of 04 and the CNMG designation, ensures compatibility with standard CNMG toolholders and contributes to stable contact conditions during both light finishing and more demanding finishing passes.

Integration into production and practical notes for use

Marked with the CNMG ISO designation, the insert is straightforward to fit into common toolblocks designed for 12 mm inscribed circle inserts. Its tolerance class M and execution code G indicate manufacturing precision and a standardised finish appropriate for shop-floor use. For best results, pair the insert with tooling and feeds geared to cast iron cutting; adjustments to cutting speed and depth should reflect machine rigidity and workholding. If there is any uncertainty about optimal parameters or application fit, our technical team at Metav Werkzeuge is available to advise.

Contact Metav Werkzeuge today at info@metav-werkzeuge.com or +49 2822 7131930 for tailored cutting data, availability and application support for Walter Tools inserts

Technical data

• SKU: CNMG120412-MW5-WKK10S-WALTER
• Article label: Drehwendeschneidplatte CNMG120412-MW5 WKK10S Walter Tools
• Series: Tiger-tec Silver
• Grade: WKK10S
• Manufacturer: Walter Tools
• Product type: Turning insert (indexable insert)
• Execution: G
• Tolerance class: M

Core dimensions

• Inscribed circle / size: 12
• Plate thickness: 04
• Corner radius: 1.2 mm
• Plate form: Rhombus 80°
• Free angle / rake: 0° (negative)

Materials and features

• Coating technology: Tiger·tec Silver
• Chipbreaker: MW5
• Material application: Cast iron (ISO group K)
• Base material: Coated carbide
• ISO designation: CNMG120412-MW5 WKK10S

FAQ

What materials is this insert intended for?
The CNMG120412-MW5 WKK10S insert is specified for cast iron (ISO group K) applications and is tuned to handle the abrasive wear characteristics typical of these alloys.

How does the MW5 chipbreaker affect machining?
The MW5 chipbreaker produces short, controllable chips in cast iron, improving evacuation and reducing the chance of chip-related surface defects with the Walter Tools turning insert (CNMG120412-MW5 WKK10S).

What does the WKK10S grade mean in practice?
WKK10S is a Walter coated-carbide grade within the Tiger·tec Silver family; it emphasises wear resistance for cast iron machining, supporting stable cutting edge life under abrasive conditions.

Is this insert compatible with standard CNMG toolholders?
Yes, the CNMG format and the specified core dimensions allow installation in standard CNMG toolholders suitable for 12 mm inscribed circle inserts.

Which cutting conditions suit this insert best?
The insert performs well under finishing and medium-depth cuts in cast iron when combined with speeds and feeds appropriate to machine rigidity; for tailored cutting data consult Metav Werkzeuge’s technical advisors.

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

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