VCMT110304-RK4 WKK20S WKK20S Wendeplatten - Walter Tools

Benefit from reliable cast iron machining thanks to the WKK20S coated carbide grade and the RK4 chipbreaker; the Tiger·tec Silver technology supports stable edge life and consistent chip control. Order the VCMT110304-RK4 WKK20S turning insert directly via Metav Werkzeuge or ask the consultants for tailored machining advice.

VCMT110304-RK4 WKK20S — Turning indexable insert, Tiger·tec Silver, for cast iron (Walter Tools)

VCMT110304-RK4 WKK20S is a rhombic 35° turning insert from Walter Tools, engineered for efficient machining of cast iron with a 7° clearance angle and a 0.4 mm nose radius.

• Tiger·tec Silver coating technology
• RK4 chipbreaker for short chips
• Rhombic 35° geometry, 0.4 mm nose radius

Increase throughput on cast iron with optimised grade and chip control

The combination of the WKK20S grade and the RK4 chipbreaker is configured to manage the short, brittle chips typical of cast iron. The coated carbide substrate of the Tiger·tec Silver series reduces abrasive wear, which extends effective cutting life under standard production conditions. For production managers seeking measurable gains, this leads to fewer tool changes and reduced cycle-time variability; the chipforming behaviour contributes to safer swarf handling and more stable machining sequences.

Consistent surface quality through precise geometry control

A rhombic 35° insert form with a 0.4 mm nose radius and 7° clearance provides a balanced compromise between robustness and finishing capability. The relatively small nose radius helps maintain dimensional accuracy on narrow profiles while the geometry supports repeatable cutting forces, which aids in achieving reproducible surface roughness. In practical terms, the geometry minimises vibration on light to medium cuts and helps maintain a predictable tool mark pattern across batches.

Lower total cost through extended edge life and predictable performance

Tiger·tec Silver's coating system is designed to resist the abrasive micro‑particles found in many cast iron grades, helping the insert deliver stable edge life across longer production runs. The result is a favourable tool cost per component due to fewer indexings and replacements. For purchasing and process planning, this grade offers a reliable baseline: consistent wear rates simplify inventory forecasting and support throughput planning in repetitive turning operations.

Practical application notes and machine compatibility

The insert is supplied in the VCMT110304-RK4 form factor and fits holders designed for rhombic 35° turning inserts; thickness and clamping must match the specified insert dimensions. The RK4 chipbreaker is recommended where short, controlled chips are required; it is particularly effective on interrupted cuts and when machining grey or nodular cast iron. For tailored cutting data, feed and depth adjustments should follow machine rigidity and workpiece clamping; for complex enquiries regarding fixtureation or cutting parameters, Metav Werkzeuge’s technical consultants are available to assist.

For reliable cast iron turning with Walter Tools’ Tiger·tec Silver grade WKK20S, contact Metav Werkzeuge for personalised application support and procurement: info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: VCMT110304-RK4-WKK20S-WALTER
• Product: Turning indexable insert
• Manufacturer: Walter Tools

Facts

• Plate size: 11
• Thickness code: 03
• Clearance angle: 7°
• Nose radius: 0.4 mm
• Plate geometry: Rhombic 35°

Special features

• Grade: WKK20S (coated carbide, Tiger·tec Silver)
• Chipbreaker: RK4
• Suitable for: cast iron
• Tolerance class: M
• Series: Tiger·tec Silver

FAQ

What materials is this insert designed for?
The VCMT110304-RK4 WKK20S insert is designed primarily for cast iron applications; the WKK20S grade and Tiger·tec Silver coating are tuned to resist abrasive wear common in cast materials.

How does the RK4 chipbreaker affect machining?
The RK4 chipbreaker promotes short, controlled chips, improving swarf evacuation and safety during turning; this is particularly advantageous when the process requires predictable chip control on cast iron.

Which geometry advantages does the rhombic 35° offer?
The rhombic 35° form balances cutting edge strength and access to concave profiles, enabling reliable performance across a range of turning feeds while supporting good surface finish due to the 0.4 mm nose radius.

Is the insert compatible with standard VCMT holders?
Yes, the VCMT110304-RK4 form factor is compatible with toolholders that accept VCMT inserts; proper clamping and holder condition are essential to achieve the specified performance.

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

Protected trademarks and product names are the property of their respective owners. Brand names and registered trademarks are mentioned for explanatory purposes only. There is no affiliation between our company and the named brands. The item offered is an original, factory-new product from the manufacturer Walter Tools.