SCMT120404-RK4 WKK10S WKK10S Wendeplatten - Walter Tools

Take advantage of the insert's Tiger·tec Silver coating and WKK10S grade for consistently high wear resistance and reliable chip control when machining cast iron; order directly via Metav Werkzeuge or consult the specialists for application advice.

SCMT120404-RK4 WKK10S indexable insert — for cast iron, Tiger·tec Silver | Walter Tools

A SCMT120404-RK4 WKK10S indexable insert engineered for robust turning and boring of cast iron components, combining a square 90° geometry with a specialised RK4 chipbreaker for predictable machining results

• Tiger·tec Silver coating for high wear resistance
• Optimised WKK10S grade for cast iron machining
• Square 90° insert, 0.4 mm corner radius
• RK4 chipbreaker for controlled chip formation

Higher throughput with a wear-resistant coating

The Tiger·tec Silver coating, paired with the WKK10S grade, targets the abrasive wear typical of cast iron machining. This coated cemented carbide composition provides improved resistance to abrasive wear, which translates into longer tool life and fewer index changes on the shop floor. For operations where consistent cycle times and fewer interruptions are decisive, the insert’s coating technology helps to maintain cutting-edge integrity over extended production runs while preserving surface quality on the workpiece.

Stable edge geometry for predictable performance

The insert’s Square 90° form with a 0.4 mm corner radius and a 7° clearance angle establishes a robust cutting edge that tolerates interrupted cuts and variable depths of cut. This geometry delivers enhanced edge strength and reduces the risk of premature chipping in heavy-duty turning tasks. The combination of shape and clearance makes the insert suitable for face turning, shoulder cuts and general-purpose turning where a defined 90° approach is required, offering repeatable results and reduced set-up variability.

Controlled chips and safer machining with RK4

The RK4 chipbreaker is designed to fragment and guide chips effectively when working with K-group materials. By promoting controlled chip formation, the breaker reduces heat concentration at the cutting edge and supports easier chip evacuation. The practical consequences are improved operator safety, fewer surface blemishes from errant chips and reduced risk of toolholder clogging. For cast iron, where brittle chip behaviour can be challenging, the RK4 design helps to stabilise cutting conditions and maintain consistent part quality.

Practical compatibility and application guidance

This indexable plate is coded and supplied in the SCMT format and is intended for toolholders that accept the SCMT120404-RK4 designation. The insert belongs to the Tiger·tec Silver family and is optimised specifically for cast iron (ISO group K), addressing abrasive wear and the short breaking chips typical of such materials. As a coated carbide solution from Walter Tools, the insert is aimed at workshops seeking a balance between robustness and repeatable surface finish; machine parameters should be selected according to the specific cast iron grade and the machine tool’s rigidity for optimal results.

Contact Metav Werkzeuge for guidance on integrating Walter Tools Tiger·tec Silver inserts into production and for order placement — eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930

Technical Data

• SKU: SCMT120404-RK4-WKK10S-WALTER
• Product name: Bohr-/Aufbohrwendeschneidplatte / Drehwendeschneidplatte SCMT120404-RK4 WKK10S
• Manufacturer: Walter Tools

Facts

• Plate size: 12 mm
• Corner radius: 0.4 mm
• Clearance angle: 7°
• Plate form: Square 90°
• Thickness code: 04
• Tolerance class: M

Special features

• Series / coating technology: Tiger·tec Silver
• Grade: WKK10S
• Chipbreaker: RK4
• Material application: cast iron (K)
• Execution: T
• Designation without grade: SCMT120404-RK4
• ISO designation: SCMT120404-RK4 WKK10S

FAQ

What materials is this insert best suited for?
The SCMT120404-RK4 WKK10S insert from Walter Tools is optimised for machining cast iron (ISO group K), with a grade and coating tailored to abrasive wear and brittle chip behaviour.

How does the RK4 chipbreaker improve machining?
The RK4 chipbreaker on the SCMT120404-RK4 WKK10S promotes controlled chip formation, aiding chip evacuation, reducing heat at the cutting edge and improving surface consistency when turning cast iron.

What does the 0.4 mm corner radius mean for part finish?
A 0.4 mm corner radius provides a compromise between edge strength and surface finish, offering robust performance in interrupted cuts while maintaining a good surface quality on cast iron components.

Is the insert compatible with standard SCMT toolholders?
Yes — the SCMT120404-RK4 designation indicates compatibility with toolholders designed for SCMT inserts; proper clamping and seating ensure repeatable results.

Does the Tiger·tec Silver coating extend tool life?
The Tiger·tec Silver coating enhances resistance to abrasive wear typical of cast iron, which generally contributes to longer tool life and more consistent production cycles.

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

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