CNMG 120408 KS20 Wendeplatten - Tungaloy

Take advantage of the balance between KS20 wear resistance, precise ISO compatibility and easy inventory handling to maintain steady output in turning operations; order directly via Metav Werkzeuge or consult the team for selection advice.

CNMG120408 KS20 Tungaloy indexable turning insert — 80° rhombic, 0.8 mm radius

A CNMG120408 KS20 Tungaloy indexable insert engineered for external and internal turning, offering ISO‑standard geometry for reliable mounting in compatible holders.

• ISO‑normed CNMG geometry
• KS20 Tungaloy carbide grade
• Rhombic shape, 0.8 mm corner radius
• Double‑sided chipbreaker, cylindrical hole

Consistent cutting performance that reduces downtime

The KS20 grade, developed by Tungaloy, combines carbide hardness with balanced toughness to deliver prolonged tool life and consistent cutting behaviour. This composition supports stable edge performance under typical turning loads, reducing the frequency of insert changes and unplanned stoppages. The result is a measurable improvement in process reliability and predictable component quality when machining with an ISO‑class insert.

ISO conformity for straightforward toolholder matching

Manufactured to ISO designation 120408, the insert conforms to the dimensional and tolerance expectations that determine holder compatibility — including form, clearance, tolerance class, fastening, size and thickness. The standardised format lowers setup time and simplifies stock management for production lines that rely on interchangeable tooling, enabling faster changeovers and fewer compatibility checks during shift changes.

Geometry and chip control for dependable surface finish

The 80° rhombic form together with a 0.8 mm corner radius and a double‑sided chipbreaker promotes controlled chip formation and stable cutting forces, which supports consistent surface quality and reduced vibration. The central cylindrical hole ensures secure clamping in the seat and helps maintain repeatable positional accuracy. These design elements translate into fewer reworks and a steadier rate of first‑pass conformity.

Practical use and selection guidance for turning tasks

Designed for turning operations, the insert should be paired with a matching external holder or boring bar, a suitable shim/clamp set and the correct securing screws to complete the system. Selection of the chipbreaker and KS20 grade is best aligned to the workpiece material, machining strategy and machine stability; the combination of geometry and cutting grade is intended to offer an efficient compromise between wear resistance and edge stability for a wide range of turning tasks.

Contact Metav Werkzeuge today for an order proposal or technical selection support — Metav Werkzeuge can advise on holder compatibility and recommend the optimal chipbreaker and grade for the application.

Technical data

• Article number: 6802106
• Manufacturer SKU: TUN6802106
• Label: CNMG120408 KS20 Tungaloy‑indexable insert
• Model series: ISO indexable turning inserts

Core technical data

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Clearance angle: 0°
• Lead/main angle: 80°
• ISO designation: 120408

Special features

• Grade: KS20 (Tungaloy)
• Material: carbide
• Shape: rhombic
• Hole: with cylindrical hole
• Chipbreaker: double‑sided

FAQ

What machining tasks is this insert intended for? The CNMG120408 KS20 Tungaloy indexable insert is intended for external and internal turning; typical use is general turning where a balance of wear resistance and edge stability is required.

How does ISO conformity affect holder compatibility? ISO conformity (designation 120408) ensures that the insert matches standard holder pockets by form, size, thickness and tolerance, which simplifies selection of compatible external holders or boring bars.

What advantages does the KS20 grade provide? The KS20 grade from Tungaloy provides a compromise between wear resistance and toughness, supporting longer edge life while maintaining stability during common turning operations.

How does the insert control chips and clamping? The rhombic geometry, double‑sided chipbreaker and cylindrical hole combine to promote controlled chip formation and secure clamping, helping to preserve surface finish and positional repeatability.

Which identifiers should be quoted when ordering? When ordering, reference the article number 6802106 or the manufacturer SKU TUN6802106 and the label CNMG120408 KS20 Tungaloy‑indexable insert to ensure the correct item is supplied.

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.