TCMT110208-RK4 WKK20S RK4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver wear resistance and the RK4 chipbreaker for reliable cast-iron turning; the 60° triangle form with a 0.8 mm corner radius delivers stable edge life and consistent surface finish. Order the insert via Metav Werkzeuge or contact the technical team for application advice.

TCMT110208-RK4 WKK20S — Indexable turning and boring insert, Tiger·tec Silver, for cast iron (Walter Tools)

TCMT110208-RK4 WKK20S is an indexable turning/boring insert developed for productive machining of cast iron components, combining a coated carbide grade with an RK4 chipbreaker for controlled chip formation.

• Tiger·tec Silver coating for prolonged life
• Optimised RK4 chip control for cast iron
• 60° triangle for three positive cutting edges
• 0.8 mm corner radius for stable finishes

Improved process security and predictable tool life

The combination of the Tiger·tec Silver coating and the WKK20S grade gives a balance of wear resistance and toughness tailored to abrasive cast-iron materials. The coated carbide substrate resists abrasive flank wear while retaining edge stability during interrupted cuts. The RK4 chipbreaker is designed to produce short, controlled chips in nodular and grey cast iron, reducing the risk of entanglement and easing chip evacuation. Together these characteristics support a more consistent production process and fewer unplanned tool changes, which benefits cycle-time reliability and overall productivity.

Consistent edge geometry for accurate finishing

A 60° triangle plate form offers three usable cutting corners per insert and a positive cutting geometry useful for general turning and light finishing passes. The 0.8 mm corner radius provides a compromise between edge strength and the ability to achieve fine surface finishes, while the 7° clearance reduces rubbing at the flank, lowering heat generation and improving dimensional stability. These geometric choices help to maintain repeatable part quality across series production and reduce the need for frequent rework.

Practical integration for workshop workflows

The insert is supplied in the TCMT110208-RK4 configuration and fits standard toolholders designed for triangular inserts, allowing straightforward integration into existing toolsets. The WKK20S grade is optimised specifically for ISO K (cast iron) applications, enabling reliable results without extensive process tuning. The tolerance class M ensures consistent seating and indexed accuracy during insert changes, supporting quick replacements and minimising downtime. For operations that prioritise steady productivity and predictable tool life, this insert offers a robust option from Walter Tools.

For discussion of specific cast-iron applications or to confirm compatibility with a holder system, contact Metav Werkzeuge to arrange technical advice or check availability.

Technical data

• SKU: TCMT110208-RK4-WKK20S-WALTER
• Article designation: TCMT110208-RK4 WKK20S
• Product type: Indexable turning/boring insert
• Manufacturer: Walter Tools
• Series: Tiger·tec Silver
• Grade: WKK20S

Facts

• Corner radius: 0.8 mm
• Free angle / clearance: 7°
• Plate form: Triangle 60°
• Plate size: 11
• Plate thickness: 02
• Tolerance class: M

Special features

• RK4 chipbreaker
• Coated carbide (Tiger·tec Silver technology)
• Optimised for cast iron (ISO K)
• Positive geometry for finishing and general turning
• Designed for standard triangular toolholders

FAQ

What materials is this insert intended for?
The TCMT110208-RK4 WKK20S insert is formulated for machining cast iron (ISO K), with the WKK20S grade tuned to handle abrasive wear typical of those alloys.

How does the RK4 chipbreaker affect machining?
The RK4 chipbreaker on this insert promotes short, controllable chips when turning cast iron, improving chip evacuation and reducing the risk of chip-related interruptions during production.

Can this insert be used for finishing passes?
Yes, the 0.8 mm corner radius and positive geometry enable fine finishing while maintaining edge strength; this makes the insert suitable for both semi-finishing and light finishing cuts.

Is the insert compatible with common triangular toolholders?
The TCMT110208-RK4 form is a standard triangular insert format and is compatible with holders designed for 60° triangle indexable plates, facilitating straightforward replacement and integration.

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

Protected trademarks and trade names remain the property of their respective owners. Brand names and registered marks are used for explanation only and do not imply any affiliation with or endorsement by the trademark holders. The offered item is original, factory-new goods from the manufacturer.