TNMG 220408 KS20 Wendeplatten - Tungaloy

Combining KS20 wear resistance with a stable chip control geometry and ISO conformity, this insert supports productive turning cycles and predictable edge life; order the TNMG220408 KS20 Tungaloy turning insert directly via Metav Werkzeuge or consult our technical team for application advice.

TNMG220408 KS20 – Turning insert (ISO 220408), Tungaloy

The TNMG220408 KS20 turning insert is an ISO‑standard triangular carbide indexable insert designed for external and internal turning with a double‑sided chipbreaker and a 0.8 mm corner radius.

• Triangular ISO geometry, 60° cutting angle
• Double-sided chipbreaker for chip control
• Carbide grade KS20 for wear resistance
• 0.8 mm corner radius for precision finishes

Consistent cutting performance for productive turning

The TNMG220408 KS20 insert pairs a proven carbide substrate with the KS20 grade to balance wear resistance and toughness, reducing unexpected tool changes and improving process reliability. The ISO TNMG shape with a 60° geometry offers stable engagement in both light and moderate cuts, while the 0.8 mm corner radius contributes to controlled edge strength and repeatable surface quality. This combination supports measurable productivity gains by prolonging effective cutting edge life and lowering regrind frequency, making it suitable for shops seeking predictable cycle times.

Integration with holders and simple mounting for fast tool changes

Compatibility with existing toolholders depends on form, free clearance angle, tolerance class, fastening method, size and thickness; this insert follows ISO specification to ease selection. The insert has a cylindrical hole for secure fastening and a 4.76 mm thickness to fit standard TNMG seats, enabling fast replacement without extensive downstream adjustments. Clear reference to ISO geometry simplifies procurement and inventory management, while the standard hole style supports reproducible clamping torque and stable seating in external holders or boring bars.

Flexible application scope through chip control and insert geometry

Designed for turning operations, the insert’s double‑sided chipbreaker provides reliable chip control across a range of cutting conditions; operators can select the chipbreaker and grade pairing according to workpiece material, machining strategy and machine stability. The triangular form yields multiple indexable edges per insert, improving cost efficiency in batch production. Where surface finish and dimensional repeatability are priorities, the modest corner radius helps achieve finer finishes without compromising edge robustness.

Production benefits: system components and practical advantages

As part of an ISO insert system, the arrangement typically comprises an indexable insert, matching external holder or boring bar, a shim/clamping set and replacement screws; this TNMG configuration is compatible with that workflow. The 4.76 mm thickness, 22 mm nominal size and 60° geometry enable secure clamping and predictable rigidity, while the KS20 grade supports steady edge behaviour under cyclic loads. These attributes translate into reduced downtime, simpler stocking rules and clearer tool-management decisions for the workshop.

Contact Metav Werkzeuge for technical advice and availability of the Tungaloy TNMG220408 KS20 turning insert — info@metav-werkzeuge.com | +49 2822 7131930

Technical data

• Article number: 6808621
• Manufacturer SKU: TUN6808621
• SKU: 6808621-Tungaloy
• Model series: ISO-Drehwendeschneidplatten
• Name: TNMG220408 KS20 Tungaloy-Wendeplatte

Facts

• Corner radius: 0.8 mm
• Thickness: 4.76 mm
• Insert size: 22 mm
• Cutting angle: 60°
• Free clearance angle: 0°

Special features

• Material: Carbide
• Grade: KS20 (Tungaloy)
• Chipbreaker: double-sided
• Shape: triangular
• Hole: cylindrical hole
• Application: Turning (external and internal)

FAQ

What is the intended use of this insert?
The TNMG220408 KS20 insert is intended for turning operations; its ISO TNMG form and double‑sided chipbreaker are engineered to support external and internal turning tasks where predictable chip control and repeatable finishes are required.

How does the KS20 grade behave in production?
KS20 is a Tungaloy grade that complements the insert geometry by offering a balance of wear resistance, toughness and edge stability, helping to maintain cutting performance over longer tool life in cyclic production environments.

Will this insert fit existing TNMG holders?
Compatibility is determined by form, free clearance angle, tolerance class, fastening method, size and thickness; the TNMG220408 follows ISO dimensions and uses a cylindrical hole, which facilitates fitting to standard TNMG holders and boring bars when the holder is specified for ISO TNMG inserts.

What are the key dimensions and mounting features?
Important details: corner radius 0.8 mm, thickness 4.76 mm, nominal size 22 mm, 60° geometry and a cylindrical hole for fastening; these dimensions ensure correct seating and clamping in ISO‑compatible toolholders.

How should chipbreakers and grades be selected?
Select the chipbreaker profile and grade based on the workpiece material, the machining strategy (roughing or finishing) and machine/tool stability; the double‑sided chipbreaker of this insert offers flexibility to adapt to differing chip control requirements.

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.