CCMT09T304 WKK20S MK4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver wear resistance and the MK4 chipbreaker geometry for reliable cast-iron turning and boring operations; order directly via Metav Werkzeuge or contact the consultants for application advice and specification matching.

CCMT09T304-MK4 WKK20S turning/boring indexable insert for cast iron by Walter Tools

The CCMT09T304-MK4 WKK20S is a rhombic 80° coated carbide insert designed for productive boring and turning of cast iron, offering optimised chip control and reliable edge life.

• Tiger·tec Silver coating for durable wear resistance
• Optimised MK4 chipbreaker for cast iron applications
• Rhombic 80° form with 0.4 mm corner radius
• 7° relief angle for stable cutting performance

High wear resistance for abrasive cast-iron work

The combination of the Tiger·tec Silver coating and the WKK20S grade provides a clear advantage when machining cast iron: the coating reduces abrasive wear while the substrate keeps the cutting edge stable under intermittent, breaking-chip conditions. For production environments that prioritise uptime and repeatable tool life, this insert offers a measurable increase in process reliability. The coated carbide composition is tuned to resist the typical abrasive loading of grey and nodular cast irons, translating into longer tool life and fewer insert changes during shifts.

Geometry that improves chip control and surface integrity

The MK4 chipbreaker paired with the rhombic 80° geometry delivers controlled chip formation and evacuation, especially important in interrupted cuts and varying cross-sections common to boring operations. The small 0.4 mm corner radius balances edge strength with surface finish capability, while the 7° relief angle reduces rubbing and heat generation at the tool–workpiece interface. These geometric choices help to maintain a consistent cutting action and reduce the risk of built-up edge, which in turn supports better component tolerances and surface quality.

Process advantages: efficiency and predictable performance

Choosing an insert from the Tiger·tec Silver family supports higher process stability and reduced variability. The grade’s wear behaviour enables consistent machining parameters over longer tool life, which can lower total operating costs through fewer tool changes and less machine downtime. In day-to-day operations, this means more predictable cycle times and improved throughput without compromising component accuracy—key considerations for batch production or lights-out machining cells.

Practical application and mounting guidance

Designed for turning and boring operations, the indexable insert fits standard holders that accept the CCMT 09 profile and T3 thickness. The medium tolerance class provides reliable seating and repeatable positioning in the toolholder, ensuring that the insert geometry performs as intended. When integrating this insert into an existing tool setup, consider modest finishing feeds with the 0.4 mm radius to exploit the balance between strength and surface finish, and ensure chip evacuation through appropriate coolant application or flute geometry in the holder.

Contact Metav Werkzeuge for cutting tests and specification matching of the Walter Tools CCMT09T304-MK4 WKK20S insert — call +49 2822 7131930 or eMail info@metav-werkzeuge.com

Technical data

• Article number: CCMT09T304-MK4-WKK20S-WALTER
• Designation: CCMT09T304-MK4 WKK20S
• Type: Bohr-/Aufbohrwendeschneidplatte / Drehwendeschneidplatte
• Series: Tiger·tec Silver
• Grade: WKK20S
• Manufacturer: Walter Tools

Facts

• Relief angle: 7°
• Corner radius: 0.4 mm
• Plate form: Rhombus 80°
• Plate size: 09
• Plate thickness: T3
• Tolerance class: M

Special features

• MK4 chipbreaker
• Coated carbide grade
• Suitable for cast iron machining
• Intended for boring and turning applications

FAQ

What materials is this insert suitable for?
The insert is specified for machining cast iron; the WKK20S grade and Tiger·tec Silver coating are optimised for abrasive cast-iron behaviour.

How does the MK4 chipbreaker benefit chip control?
The MK4 geometry shapes chips to break reliably when turning or boring cast iron, improving evacuation and reducing the risk of entanglement in the machining zone.

Which toolholder profile matches the insert?
Holders accepting the CCMT 09 insert profile and T3 thickness are appropriate; the tolerance class M ensures repeatable seating for stable cutting.

What surface finish can be expected with the 0.4 mm corner radius?
The 0.4 mm radius balances edge strength and finish capability, enabling good surface integrity in standard finishing passes on cast iron.

Is this insert part of a coating family with other grades?
Yes, this insert belongs to the Tiger·tec Silver series; the WKK20S grade is the variant tailored for cast-iron applications.

Protected trademarks and trade names are the property of their respective owners. Brand names are used for explanation only; there is no connection between our company and the named manufacturers. The offered item is original, factory-new goods of Walter Tools.

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