TCMT16T308-RK4 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of durable Tiger‑tec Silver coating, a precise 0.8 mm corner radius and an RK4 chipbreaker for controlled chip formation and consistent component quality; order directly via Metav Werkzeuge or contact the sales team for application support.

TCMT16T308-RK4 WKK20S triangular indexable insert – Walter Tools, Tiger‑tec Silver, for cast iron

The TCMT16T308-RK4 WKK20S is an indexable triangular insert designed for productive turning and boring on cast iron components, pairing a robust coated‑carbide grade with a geometry made for stable chip control and long tool life.

• Tiger‑tec Silver coating for wear resistance
• Optimised for machining cast iron materials
• Triangle 60° form with 0.8 mm corner radius
• RK4 chipbreaker for consistent chip control

Higher productivity through engineered coating and grade

The combination of the Tiger‑tec Silver coating and the WKK20S grade delivers a measurable advantage when machining abrasive cast iron: improved wear resistance leads to extended tool life and fewer insert changes. The coated carbide design absorbs cutting stresses more evenly, which reduces flank wear and keeps machining cycles productive. For shops aiming to lower cycle time variability, this insert class supports more repeatable processes and less unscheduled downtime, translating into cost efficiency across production runs.

Geometry and chip management that stabilise the process

A triangular 60° shape with a 0.8 mm corner radius and an RK4 chipbreaker contributes to reliable chip formation and evacuation during interrupted or steady cuts. The modest corner radius balances edge strength with the ability to produce acceptable surface finishes in a single pass, while the RK4 chipbreaker is tuned to the fracture-prone chips typical of cast iron. These geometry choices reduce vibration and protect the cutting edge, resulting in fewer rejects and consistent dimensional outcomes in serial production.

Practical integration and holder compatibility

The insert is supplied in the standard ISO designation TCMT16T308-RK4 WKK20S, enabling straightforward replacement in established indexable‑insert toolholders and turning systems. The T3 plate thickness and tolerance class M ensure mechanical stability under varying cutting conditions. When mounted correctly in a compatible triangular insert pocket, the geometry and coating together allow for robust cutting parameters that can be leveraged to increase feed rates or extend intervals between tool changes, depending on the machining strategy.

Application focus and material suitability

Specifically developed for work on cast iron, the WKK20S grade is optimised to handle abrasive wear and the short, brittle chips typical of these materials. The tool’s configuration is therefore especially suitable for grey cast iron and similar iron alloys where chip control and edge life are the primary concerns. For operations requiring high process reliability in cast‑iron turning and boring, this insert offers a targeted balance of economy and performance.

For technical advice or to place an order for Walter Tools Tiger‑tec Silver inserts, contact Metav Werkzeuge for tailored application guidance at info@metav-werkzeuge.com or by phone on +49 2822 7131930 — practical support and fast supply options are available from Metav Werkzeuge

Technical data

• Article number: TCMT16T308-RK4-WKK20S-WALTER
• SKU / Label: TCMT16T308-RK4 WKK20S Walter Tools
• Product type: Triangular indexable insert (turning/boring)

Facts

• Size: 16 mm
• Corner radius: 0.8 mm
• Free angle: 7°
• Thickness: T3
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver
• Grade: WKK20S (coated carbide)
• Chipbreaker: RK4
• Shape: triangle 60°
• Series: Tiger‑tec Silver
• Material application: cast iron
• ISO designation: TCMT16T308-RK4 WKK20S

FAQ

Which materials is this insert designed for?
The TCMT16T308‑RK4 WKK20S is optimised for machining cast iron; the WKK20S grade and Tiger‑tec Silver coating provide abrasion resistance suited to iron alloys.

What benefits does the Tiger‑tec Silver coating provide?
Tiger‑tec Silver improves wear resistance and edge life on the TCMT insert, supporting longer cutting intervals and steadier process behaviour when turning cast iron.

How does the RK4 chipbreaker affect machining?
The RK4 chipbreaker on this triangular insert encourages controlled chip formation and evacuation, reducing the risk of built‑up edge and improving surface quality in interrupted or steady cuts.

Is the TCMT16T308‑RK4 compatible with standard triangular holders?
Yes, the ISO designation and standard geometry are intended for use in common triangular insert pockets; ensure correct clamping and seat condition for optimal performance.

What is the typical application for the 0.8 mm corner radius?
A 0.8 mm corner radius balances edge strength and finish capability, making it suitable for general turning operations on cast iron where a durable edge and acceptable surface quality are required.

Hersteller: Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen

Protected trademarks and trade names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the named brands. The offered item is an original, factory‑new product of the manufacturer. The Walter AG brand denotes a leading provider of precision tools and is part of established international tool‑making groups.