SNMG190612-MK5 WKK20S Wendeplatten - Walter Tools

Take advantage of a coated‑carbide grade and a robust square geometry to increase uptime and maintain consistent results in cast‑iron turning; order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

SNMG190612-MK5 WKK20S – Indexable turning insert, square 90°, 1.2 mm corner radius (Walter Tools)

The SNMG190612-MK5 WKK20S is a square indexable turning insert designed for productive machining of cast iron, combining a Tiger‑tec Silver coating with a chipbreaker tuned for short, controlled chips.

• Tiger‑tec Silver coated carbide
• Optimised for cast iron (ISO group K)
• MK5 chipbreaker for controlled chips
• Square 90° insert, 1.2 mm corner radius

Productive machining of cast iron with reliable chip control

The SNMG190612‑MK5 WKK20S pairs a coated carbide grade with a specifically shaped MK5 chipbreaker, which is adapted to the abrasive wear behaviour and the typical short, brittle chips of cast iron. This results in stable chip formation, fewer interruptions for chip clearing and predictable cutting forces. The combination of coating and chipbreaker reduces flank and crater wear rates, enabling longer intervals between tool changes and a steadier production flow in series turning.

Consistent edge life and improved surface quality for serial work

A square 90° geometry together with a 1.2 mm corner radius provides increased edge strength and support in heavy or interrupted cuts, while the 0° negative rake contributes to a robust cutting edge that resists chipping in abrasive cast materials. The net effect is a consistent surface finish and reduced vibration in demanding operations. For machining strategies where process stability and repeatability are critical, this insert offers a balance of mechanical strength and finishing capability.

Easy specification and predictable workshop integration

The insert adheres to standard SNMG toolholder interfaces and is supplied in a well‑defined tolerance class M. Key data such as plate size and thickness are documented for machine setup and process planning, supporting quick changeovers and reproducible results across batches. When more detailed cutting data is required for specific cast‑iron grades, Metav Werkzeuge can provide application‑specific recommendations and cutting‑parameter guidance to ensure optimal tool life and productivity.

Choose Walter Tools’ Tiger‑tec Silver grade for robust cast‑iron turning and contact Metav Werkzeuge for tailored application support and procurement.

Technical Data

• Article number: SNMG190612-MK5-WKK20S-WALTER
• SKU: SNMG190612-MK5-WKK20S-WALTER
• Product type: Indexable turning insert
• Brand: Walter Tools
• Series: Tiger‑tec Silver
• Grade: WKK20S

Numbers / Core technical data

• Corner radius: 1.2 mm
• Plate size: 19 mm
• Rake angle: 0° (negative)
• Thickness: 06
• Tolerance class: M

Designs / Special features

• Coating: Tiger‑tec Silver
• Material/grade: WKK20S (coated carbide)
• Chipbreaker: MK5
• Geometry: Square 90°
• Suitable for: Cast iron (ISO group K)

FAQ

What materials is this insert intended for?
The SNMG190612‑MK5 WKK20S from Walter Tools is intended primarily for cast iron machining (ISO group K), with the grade and chipbreaker optimised for abrasive wear and short, breaking chips.

Which chipbreaker does the insert use and what is the benefit?
The insert features an MK5 chipbreaker, which promotes controlled, short chips in cast‑iron turning and reduces the risk of chip entanglement and irregular surface marks.

How does the insert geometry affect performance?
The square 90° geometry and 1.2 mm corner radius provide high mechanical support and edge strength, improving resistance to chipping and delivering steady performance in interrupted and continuous cuts.

Is the coating important for tool life?
Yes, the Tiger‑tec Silver coating on the WKK20S grade enhances wear resistance under abrasive conditions typical of cast‑iron machining, contributing to extended tool life and more consistent cutting results.

Can this insert be used in standard SNMG toolholders?
The insert conforms to SNMG geometry and is compatible with standard SNMG toolholders, enabling straightforward integration into existing turning setups.

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