CCGT120408-MK4 WKK20S WKK20S Wendeplatten - Walter Tools

Combining the Tiger‑tec Silver coating and the WKK20S grade delivers reliable abrasive-wear resistance and consistent edge life for cast-iron production. The MK4 chipbreaker and a 0.8 mm corner radius provide stable chip formation and robust cutting edges, supporting dependable throughput. Order directly via Metav Werkzeuge or request tailored application advice from our consultants.

Bohr-/Aufbohrwendeschneidplatte / Drehwendeschneidplatte CCGT120408-MK4 WKK20S – for cast iron, Walter Tools

The CCGT120408-MK4 WKK20S is a rhombic 80° indexable insert engineered for efficient machining of cast-iron components in production and repair workshops.

• Optimised for cast iron machining
• Tiger‑tec Silver coated grade
• MK4 chipbreaker for stable chips
• 0.8 mm corner radius for edge strength

Higher throughput on abrasive cast-iron jobs

The combination of the WKK20S grade and Tiger‑tec Silver coating is tailored to cope with the abrasive nature of cast iron. This means longer useful edge life under cyclic loading and frequent interruptions typical of cast-iron workpieces. The insert’s construction reduces the rate of flank and crater wear, which translates into fewer tool changes and improved machine uptime. For operations where process stability and predictable tool life matter, this insert supports a more economical production rhythm.

Controlled chips and secure cutting edge

The MK4 chipbreaker is designed for controlled, short chips when machining brittle materials, lowering the risk of chip jamming and improving surface quality. Alongside a 0.8 mm corner radius, the geometry stabilises the cutting edge under intermittent cuts and interrupted surfaces. These features reduce vibration and promote consistent dimensional results, helping to uphold tight tolerances without excessive finishing passes. The result is a reliable balance between material removal rate and component quality.

Geometry that supports accuracy and flexibility

The rhombic 80° form provides a positive cutting entry and good engagement for a variety of turning operations, while the 7° relief angle facilitates smooth surface generation on uneven cast-iron faces. The insert’s profile and thickness code support secure clamping in standard toolholders and maintain positional accuracy during repeated indexing. Explained simply: the geometry reduces deformation and ensures repeatable tool positioning, which benefits serial production and regrinding schedules.

Selection and application guidance for machine shops

This insert is intended primarily for machining cast iron; its material designation and chipbreaker are optimised for that group according to ISO classification. When integrating the insert into a process, match cutting data to the machine’s rigidity and the workpiece condition: the coated grade favours moderate to high cutting speeds typical for cast-iron machining. If there is any uncertainty about compatibility with a specific setup, Metav Werkzeuge can advise on cutting parameters and holder selection to achieve the best balance of productivity and tool life.

Request tailored application advice or a delivery quote from Metav Werkzeuge for the Walter Tools CCGT120408-MK4 WKK20S insert to optimise cast-iron machining performance

Technical data

• SKU: CCGT120408-MK4-WKK20S-WALTER
• Designation: CCGT120408-MK4 WKK20S
• Manufacturer: Walter Tools
• Series: Tiger‑tec Silver

Core dimensions

• Plate size: 12 mm
• Thickness code: 04
• Relief angle: 7°
• Corner radius: 0.8 mm

Special features

• Grade: WKK20S
• Chipbreaker: MK4
• Shape: Rhombus 80°
• Tolerance class: G
• Execution: T
• Material application: cast iron

FAQ

What materials is this insert designed to machine?
The insert is engineered for machining cast iron; the WKK20S grade and Tiger‑tec Silver coating are matched to the abrasive and breakable-chip behaviour of cast-iron materials.

How does the MK4 chipbreaker influence cutting performance?
The MK4 chipbreaker promotes short, controlled chips on brittle materials, improving chip evacuation and reducing the chance of chip entanglement during turning operations.

What does the 0.8 mm corner radius mean for edge life?
A 0.8 mm corner radius increases the strength of the cutting edge, improving resistance to chipping during interrupted cuts and contributing to longer, more predictable tool life.

Is this insert compatible with standard toolholders?
The insert follows common indexable-insert dimensions (CCGT120408) and can be used in compatible toolholders designed for rhombic 80° inserts; holder selection should ensure correct clamping for the insert thickness code.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and protected trade names are mentioned solely for explanation. There is no connection between our company and the mentioned brands. The offered article is original, brand-new goods of the manufacturer (Walter Tools).