TPGT110208-MK4 WKK20S WKK20S Wendeplatten - Walter Tools

Taking advantage of high process stability and targeted chip control, this insert combines the Tiger‑tec Silver coating with the WKK20S grade for durable performance in cast‑iron machining; its MK4 chipbreaker and 0.8 mm corner radius ensure repeatable surface quality. Order the TPGT110208‑MK4 WKK20S insert directly via Metav Werkzeuge or consult our specialists for application support.

TPGT110208‑MK4 WKK20S – triangular turning insert for cast iron (Tiger‑tec Silver) by Walter Tools

TPGT110208‑MK4 WKK20S is a triangular 60° indexable insert designed for productive turning of cast iron components, delivering stable cutting performance and long tool life.

• Tiger‑tec Silver coating for long tool life
• Optimised MK4 chipbreaker for cast iron
• Triangle 60° insert, 0.8 mm corner radius
• 11° clearance angle, precise chip control

Greater productivity through targeted coating and grade

The combination of the Tiger‑tec Silver coating with the WKK20S carbide grade is optimised for abrasive cast‑iron workpieces. The coating reduces wear on the cutting edge and extends tool life, which translates into fewer insert changes and less downtime. For production environments this means more consistent cycle times and a clearer calculation of tooling costs. The grade and coating pairing is tuned to moderate toughness and high abrasion resistance, making the insert especially suited to interrupted cuts and unstable chip forms common in grey and nodular cast iron.

Reliable chip control and consistent surface results

The MK4 chipbreaker is engineered to control short, breaking chips typical of cast‑iron machining, promoting safe chip evacuation and reducing rework. The triangle 60° geometry offers three usable cutting edges per insert, improving cost‑efficiency, while the 0.8 mm corner radius balances edge strength and surface finish. The 11° clearance angle supports low rubbing and stable cutting engagement. Together these features result in improved surface integrity and predictable tool behaviour, which is particularly valuable when repeatability and part quality are critical.

Clear selection and practical application guidance

Selection of an insert from the ISO‑style designation is straightforward: the marking identifies geometry, chipbreaker and size so that the insert matches the corresponding toolholder. The TPGT110208‑MK4 code indicates a triangular insert with an MK4 chipbreaker and the specific geometry required for precise seating in standard holders. As a cast‑iron‑focused solution, the insert is intended for components where abrasive wear governs tool life; matching the grade and coating to the workpiece group avoids premature edge failure. For best results, pair the insert with a rigid setup and consistent coolant or dry‑cutting strategy suited to the casting grade.

Process benefits and workshop integration

Integrating this indexable insert into production delivers measurable benefits: reduced tooling frequency, stable cutting edges and improved productivity on cast‑iron parts. The robust design supports repeatable machining and simplified tool inventory management, as the triangle form offers multiple edges per insert. For engineers and buyers, the predictable performance reduces planning margin and supports tighter tolerances without increasing machining risk. The insert’s compatibility with standard triangular toolholders facilitates swift implementation on existing turning centres.

For Walter Tools Tiger‑tec Silver inserts such as the TPGT110208‑MK4 WKK20S, contact Metav Werkzeuge for availability and cutting recommendations: info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: TPGT110208‑MK4‑WKK20S‑WALTER
• Product: Drehwendeschneidplatte (turning indexable insert)
• Manufacturer: Walter Tools
• Grade: WKK20S
• Series: Tiger‑tec Silver

Core specifications

• Clearance angle: 11°
• Corner radius: 0.8 mm
• Insert shape: Triangle 60°
• Inscribed circle / size: 11 mm
• Thickness: 2.0 mm
• Chipbreaker: MK4

Special features

• Coating: Tiger‑tec Silver (coated carbide)
• Material application: Cast iron (group K)
• Tolerance class: G
• Execution: T
• ISO designation: TPGT110208‑MK4 WKK20S

FAQ

What materials is this insert intended for?
The TPGT110208‑MK4 WKK20S insert is intended primarily for cast‑iron machining; the WKK20S grade and Tiger‑tec Silver coating are optimised for abrasive cast‑iron conditions.

How does the MK4 chipbreaker affect machining?
The MK4 chipbreaker produces short, controllable chips in cast‑iron turning, improving chip evacuation and reducing the risk of entanglement or surface damage.

How many cutting edges are available per insert?
The triangular 60° geometry provides three usable cutting edges per insert, which improves cost‑efficiency in the workshop.

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

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