RCMT1606M0-RK4 WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of high process stability and economical wear behaviour for reliable, productive turning of cast iron. The RK4 chipbreaker and Tiger‑tec Silver coated grade deliver controlled chips and longer edge life — order the insert directly via Metav Werkzeuge or consult the technical team for application support.

RCMT1606M0-RK4 WKK20S Turning Insert for Cast Iron — Tiger‑tec Silver (Walter Tools)

A RCMT1606M0-RK4 WKK20S turning indexable insert engineered for productive cast iron machining with a round geometry and optimised chip control.

• Round insert RCMT1606M0-RK4 in 16 mm size
• Tiger‑tec Silver coated carbide grade WKK20S
• RK4 chipbreaker optimised for cast iron
• 7° clearance angle for stable cutting

Consistent chip control for abrasive cast iron turning

The round geometry combined with the RK4 chipbreaker provides reliable segmentation of short, brittle chips typical of cast iron. This results in stable cutting, fewer interruptions and improved cycle times in serial production. The insert’s form delivers a predictable contact zone between tool and workpiece, which reduces vibration and contributes to repeatable surface quality. As a consequence, process planning benefits from lower scrap rates and steadier machine loading.

Extended tool life through Tiger‑tec Silver coated grade

The insert uses the WKK20S carbide grade within the Tiger‑tec Silver coating family, a combination developed for abrasive materials. The coated carbide substrate improves wear resistance and maintains a sharp cutting edge for longer intervals, lowering tooling cost per part and supporting continuous operation. The grade is specifically tuned for cast iron applications, offering a balance between toughness and abrasion resistance so that tool changes become less frequent and productivity rises.

Practical geometry and mounting advantages for workshop use

With a nominal size of 16 mm and a 7° clearance angle, the round insert adapts well to different approach angles and turning strategies. The standard ISO designation facilitates selection for modular toolholders and quick indexable replacement. The form and tolerance class M ensure reliable seating and repeatability after indexing, supporting efficient setup routines. For applications demanding consistent chip breaking and surface integrity when turning cast iron, this insert is a practical choice that contributes to process security and high uptime.

For productive cast iron machining with Walter Tools’ Tiger‑tec Silver inserts, contact Metav Werkzeuge for ordering and tailored technical guidance at info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number (SKU): RCMT1606M0-RK4-WKK20S-WALTER
• Designation: RCMT1606M0-RK4 WKK20S
• Product type: Turning indexable insert
• Manufacturer: Walter Tools

Data

• Size: 16
• Thickness code: 06
• Clearance angle: 7°
• Shape: Round
• Chipbreaker: RK4
• Tolerance class: M

Special features

• Coating technology: Tiger‑tec Silver
• Carbide grade: WKK20S (coated carbide)
• Application focus: Cast iron machining
• Optimised for short, breaking chips
• Execution: T

FAQ

Which materials is this insert intended for?
The RCMT1606M0-RK4 WKK20S insert is designed primarily for cast iron machining; the WKK20S grade within the Tiger‑tec Silver family is tuned for abrasive cast materials.

What role does the RK4 chipbreaker play in machining?
The RK4 chipbreaker segments short, brittle chips commonly produced when turning cast iron, improving chip evacuation and process stability during continuous cutting.

Is the insert compatible with standard ISO toolholders?
The RCMT designation follows ISO indexing for turning inserts; the round geometry and specified tolerance class enable fitment in compatible modular toolholders that accept RCMT inserts.

How does the Tiger‑tec Silver coating benefit production runs?
The Tiger‑tec Silver coating enhances wear resistance on abrasive cast iron, prolonging edge life and reducing the frequency of tool changes — this supports longer uninterrupted production cycles.

Can this insert be used for stainless steel or aluminium?
This grade is optimised for cast iron; for stainless steel or aluminium, selection of a grade and geometry tailored to those materials is recommended to ensure optimal performance.

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

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