CNMG 190616 KS20 Wendeplatten - Tungaloy

Take advantage of the KS20 cutting grade combined with a rhombic 80° geometry and a 1.6 mm corner radius for reliable edge stability and consistent machining results; order the insert directly via Metav Werkzeuge or consult our specialists for application-specific guidance.

CNMG 190616 KS20 indexable carbide turning insert — Tungaloy, rhombic 80° with 1.6 mm radius

A CNMG 190616 KS20 indexable insert designed for external and internal turning, offering a balanced combination of wear resistance, toughness and cutting-edge stability in a standard ISO geometry.

• KS20 grade for balanced wear resistance and toughness
• Rhombic 80° shape with 1.6 mm corner radius
• Cylindrical hole, 6.35 mm thickness for secure clamping

Optimised grade for reliable tool life and productivity

The KS20 Tungaloy grade is engineered to deliver a practical balance between wear resistance and toughness, which reduces unplanned tool changes and supports longer production runs. With a carbide substrate and the KS20 coating characteristics, the insert maintains a stable cutting edge under a range of cutting conditions. This results in more consistent cycle times and improved component repeatability, especially where mixed batches or varying workpiece materials are present. Selecting this grade helps to lower unit costs by extending service intervals while preserving surface quality.

Geometry and clamping for stable cutting performance

A rhombic, 80° geometry with a 1.6 mm corner radius provides a good compromise between edge strength and profile definition, suitable for both roughing and light finishing passes. The insert features a 0° clearance and a cylindrical hole for positive and secure mounting; the 6.35 mm plate thickness contributes to rigidity in the toolholder. The corner radius influences cutting forces and corner strength: a larger radius increases edge robustness but may raise cutting load, whereas a smaller radius refines detail and lowers cutting forces. Understanding these trade-offs supports the choice of feeds and depths of cut for stable machining.

System guidance and application recommendations for turning

Compatibility depends on holder form, clearance angle, tolerance class, fastening and nominal size. The practical system comprises an ISO indexable insert, a matching external holder or boring bar, a shim/clamp set and the appropriate fastening screws. The double-sided chipbreaker design permits indexable use on both cutting faces, improving economy. For best results, select a chipbreaker and grade according to the workpiece material and the machine–workpiece–tool stability. For general guidance: use more robust parameters for unstable setups and lighter cuts when surface finish is the priority.

For tailored recommendations on Tungaloy KS20 inserts and to ensure optimal holder compatibility, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6802313
• Manufacturer SKU: TUN6802313
• Brand: Tungaloy
• Series: ISO turning indexable inserts

Numbers / Core technical data

• Size: 19 mm
• Plate thickness: 6.35 mm
• Corner radius: 1.6 mm
• Geometry angle: 80°
• Clearance angle: 0°

Designs / Special features

• Shape: rhombic
• Hole: with hole (cylindrical hole)
• Chipbreaker: double-sided
• Grade: KS20 (Tungaloy)
• Material: carbide
• Intended use: turning (external and internal)
• System components: insert, suitable holder/boring bar, shim/clamp set, spare screws

FAQ

What materials can this insert machine effectively?
The CNMG 190616 KS20 insert is intended for a wide range of turning tasks; the KS20 grade provides a balanced performance for many steels and general-purpose applications, while selection of the chipbreaker adapts the insert to specific workpiece materials.

How does the 1.6 mm corner radius affect machining?
A 1.6 mm corner radius on the CNMG 190616 KS20 increases edge strength and improves tool life under interrupted or heavier cuts, though it may slightly raise cutting forces compared with a smaller radius.

Is the insert reversible or single-use per side?
The insert is double-sided with a double-sided chipbreaker, allowing indexing to a fresh edge and improving economy by providing multiple usable cutting edges.

Which holder characteristics determine compatibility?
Compatibility is governed by holder form, clearance angle, tolerance class, fastening type, nominal size and plate thickness; ensure the holder accepts a 19 mm rhombic insert with a 6.35 mm thickness and a cylindrical hole.

How should the chipbreaker be chosen for a given application?
Choose the chipbreaker based on material, cutting depth and machine stability: robust chipbreakers for roughing and difficult-to-handle chips, finer breakers for finishing and tight tolerances when surface quality is critical.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product 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 mentioned brands. The item offered is an original, brand-new product from the manufacturer.