TNMG 220408 T5125 Wendeplatten - Tungaloy

Take advantage of CVD-coated carbide T5125 for robust performance in interrupted cuts and the 60° triangular form with 0.8 mm nose radius for reliable chip control; order the Tungaloy indexable insert directly via Metav Werkzeuge or consult our specialists for process optimisation.

TNMG220408 T5125 indexable turning insert — Tungaloy, CVD-coated carbide for turning

TNMG220408 T5125 is an ISO‑standard indexable insert designed for external and internal turning, optimised for cast iron applications and interrupted cuts

• CVD-coated carbide grade T5125
• Designed for cast iron and interrupted cuts
• Triangle 60° form with 0.8 mm nose radius
• Double-sided chipbreaker, with cylindrical hole

Consistent cutting performance for demanding turning tasks

The insert is manufactured from CVD-coated carbide, grade T5125, which provides increased toughness for applications involving interrupted cuts and less stable set-ups. The coated substrate improves edge robustness, reducing the frequency of edge chipping and unplanned tool changes. With a 0.8 mm nose radius, the geometry balances strength and detail, allowing stable cutting forces while still supporting good surface finishes on cast components. The combination of these features translates into fewer interruptions and more predictable machining cycles.

Practical productivity gains in the workshop

The triangular, 60° form offers three usable cutting edges per side, while the double-sided chipbreaker assists consistent chip formation and evacuation. This results in improved process reliability and reduced cycle times on turning operations. Because the insert is ISO‑compliant, compatibility with a wide range of external holders and boring bars is straightforward when matching form, relief angle, tolerance class, clamping method, size and thickness. The measurable benefits are lower tool consumption and streamlined tool management for small and medium batch production.

Fitment guidance and material suitability

The insert features a cylindrical hole for secure clamping and an ISO designation that simplifies selection for existing tool families. It is particularly suited to machining cast iron and similar materials where intermittent contacts occur; the grade is chosen for its toughness rather than maximum hardness. When fitting into a holder, ensure the relief angle of 0° and the ISO size are matched to avoid improper seating. Correct matching of holder and insert reduces vibration and supports repeatable part quality.

For applications involving cast iron and interrupted turning, contact Metav Werkzeuge for immediate supply of the Tungaloy TNMG220408 T5125 insert or for tailored technical advice: info@metav-werkzeuge.com • +49 2822 7131930

Technical data

• Article number: 6850311
• Manufacturer SKU: TUN6850311
• Distributor SKU: 6850311-Tungaloy
• Manufacturer: Tungaloy
• Model series: ISO turning indexable inserts
• Type designation: TNMG220408 T5125

Core dimensions & numbers

• Angle: 60°
• Nose radius: 0.8 mm
• Relief angle: 0°
• Plate size: 22 mm
• Number of usable edges: double-sided

Materials & special features

• CVD-coated carbide (T5125)
• Grade: T5125, tougher grade for cast iron
• Triangle form with cylindrical hole
• Double-sided chipbreaker
• Suitable application: turning, interrupted cuts

FAQ

What materials is this insert best suited for?
This insert, the TNMG220408 T5125 from Tungaloy, is optimised for machining cast iron and performs well in interrupted cutting conditions.

How does the T5125 coating affect tool life?
The CVD-coated T5125 grade enhances edge toughness and wear resistance, so the TNMG220408 insert delivers more consistent life under interrupted cuts compared with uncoated grades.

Is the insert compatible with common ISO turning holders?
Yes. The insert follows ISO dimensions (220408) and will fit holders that match form, relief angle, tolerance class, clamping method, size and thickness.

What advantages does the double-sided chipbreaker provide?
The double-sided chipbreaker on this insert promotes controlled chip formation and evacuation, contributing to process stability and reduced cycle interruptions.

What nose radius should be expected for finishing or semi-finishing?
The insert has a 0.8 mm nose radius, offering a balance between robustness and the ability to achieve acceptable surface finishes in semi-finishing and finishing passes.

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.