CCMT09T308-RK4 WKK20S RK4 Wendeplatten - Walter Tools

Take advantage of a Tiger·tec Silver coating and the WKK20S grade for extended tool life when machining abrasive cast iron; combine that with the RK4 chipbreaker and 0.8 mm corner radius for reliable chip control and consistent surface quality. Order the insert directly via Metav Werkzeuge or contact the consultants for cutting-data recommendations.

CCMT09T308-RK4 WKK20S turning insert — Walter Tools (Rhombic 80°, Tiger·tec Silver)

The CCMT09T308-RK4 WKK20S is a rhombic turning insert designed for precision machining of cast iron components using a high-performance coated carbide grade.

• Tiger·tec Silver coating for high wear resistance
• Optimised for cast iron (ISO group K)
• Rhombic 80° geometry, 0.8 mm corner radius
• RK4 chipbreaker for controlled chip formation

Longer tool life through advanced coating and grade

The Tiger·tec Silver coating combined with the WKK20S cutting grade delivers high wear resistance and a stable cutting edge when working with abrasive materials. As a coated carbide insert engineered for ISO group K (cast iron), the insert resists abrasive wear and thermal loading, extending in‑service life and reducing changeovers. This translates into fewer interruptions on the shop floor and a more predictable production rhythm.

Geometry and chip control that improve process reliability

The rhombic 80° shape with a 0.8 mm corner radius provides a robust cutting edge and favourable cutting geometry for interrupted cuts and roughing passes. The RK4 chipbreaker is tuned to produce short, controllable chips when machining cast iron, lowering the risk of chip entanglement and improving surface finish. A 7° clearance ensures reduced cutting forces and helps to avoid rubbing, while the T3 plate thickness increases rigidity for stable turning at moderate feeds and depths of cut.

Practical advantages for series production and tool management

Using this insert supports reproducible results across batches: indexable geometry and a consistent coating system mean repeatable tool life and easier process qualification. The design reduces unplanned downtime and simplifies inventory management by standardising on a versatile insert for a wide range of cast iron workpieces. For workshops seeking a balance of performance and economy, the combination of shaped geometry and optimised chip control provides tangible productivity benefits.

Contact Metav Werkzeuge to request availability, detailed cutting data and application advice for Walter Tools CCMT09T308-RK4 WKK20S; eMail: info@metav-werkzeuge.com, Telephone: +49 2822 7131930

Technical Data

• Article number: CCMT09T308-RK4-WKK20S-WALTER
• Product type: Bohr-/Aufbohrwendeschneidplatte / Drehwendeschneidplatte
• Serie: Tiger-tec Silver
• Grade: WKK20S
• Manufacturer: Walter Tools

Core specifications

• Clearance angle: 7°
• Corner radius: 0.8 mm
• Plate shape: Rhombus 80°
• Plate size: 09
• Thickness: T3

Materials and special features

• Coating: Tiger·tec Silver
• Chipbreaker: RK4
• Suitability: cast iron (ISO group K)
• Execution: T
• Designation: CCMT09T308-RK4

FAQ

Which materials is this insert suitable for?
The CCMT09T308-RK4 WKK20S is specified for cast iron (ISO group K) and the WKK20S grade with Tiger·tec Silver coating is optimised for abrasive cast materials.

What does the RK4 chipbreaker provide?
The RK4 chipbreaker on this insert promotes short, controllable chips for cast iron machining, improving surface quality and reducing chip management issues.

How does the geometry affect cutting performance?
The rhombic 80° form and 0.8 mm corner radius create a robust cutting edge that tolerates interrupted cuts and provides stable engagement, while the 7° clearance lowers rubbing and cutting forces.

Can this insert be used for finishing and semi‑roughing?
Yes, the combination of the WKK20S grade and RK4 chip control makes the insert suitable for a range of operations from semi‑roughing to finishing on cast iron, depending on cutting data and machine rigidity.

How is the designation CCMT09T308‑RK4 interpreted?
The designation indicates a CCMT shape, size 09, thickness T3, a 0.8 mm corner radius and the RK4 chipbreaker; the added WKK20S denotes the Walter cutting grade and coating system.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and protected product names are mentioned solely for explanatory purposes. There is no affiliation between our company and the named brands. The offered article is original, brand‑new goods of the manufacturer.