TNMG 220408 T5125 Wendeplatten - Tungaloy

Take advantage of the combination of CVD-coated carbide durability and a double-sided chipbreaker for consistent results in interrupted cuts; order the insert directly via Metav Werkzeuge or request application advice from our consultants.

TNMG220408 T5125 — TNMG turning insert (CVD-coated carbide) by Tungaloy

The TNMG220408 T5125 is a triangular, ISO-standard turning insert designed for external and internal turning, optimised for cast iron and interrupted cutting conditions.

• CVD-coated carbide T5125
• Optimised for cast iron and interrupted cuts
• Triangular TNMG form, 60° geometry
• Double-sided chipbreaker with cylindrical hole

Consistent cutting performance for interrupted turning

The CVD-coated T5125 grade combines a wear-resistant coating with a tough carbide substrate to deliver reliable performance where cuts are intermittent or workpiece support is limited. The coating reduces flank wear and increases tool life while the substrate tolerates shock loads, so stable material removal is maintained even under varying conditions. For users machining cast components, this composition improves edge stability and reduces the frequency of index changes, which contributes to a steadier production flow and predictable tool-change intervals.

Precise geometry for secure clamping and repeatability

Built to ISO dimensions, the triangular TNMG shape with a 60° cutting angle and a 0° clearance ensures repeatable contact with compatible holders and boring bars. The insert is supplied with a cylindrical hole, enabling positive clamping and straightforward indexing on a wide range of ISO-compatible holders. When fitting an insert, verify form, clearance angle, tolerance class, fastening method, size and thickness of the holder to ensure secure seating; correct match of these parameters preserves cutting geometry and surface finish, and reduces the risk of vibration.

System approach that improves productivity and cost efficiency

This indexable insert functions as part of a complete turning system comprising a suitable external holder or boring bar, a shim/clamp set and replacement screws. The double-sided chipbreaker offers two fresh cutting edges per index, halving tooling cost per edge compared with single-sided alternatives and shortening machine downtime. Selecting a chipbreaker and grade that match the workpiece and stability yields better chip control, reduced rework and improved cycle times. For workshops aiming to standardise tooling, the insert’s ISO conformity simplifies stocking and replacement across multiple machines.

For tailored machining recommendations with Tungaloy's TNMG220408 T5125 and to check stock availability, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 for prompt application advice and ordering support

Technical Data

• Article number: 6850308
• Manufacturer SKU: TUN6850308
• Manufacturer: Tungaloy

Core data

• Corner radius: 0.8 mm
• Geometry angle: 60°
• Clearance angle: 0°
• Size: 22 mm

Design and features

• Shape: triangular
• Hole style: cylindrical hole
• Chipbreaker: double-sided
• Grade/coating: T5125 (CVD-coated)
• Material: carbide
• Application: turning
• Typical use: external and internal turning, interrupted cuts, cast iron

FAQ

What materials is this insert best suited for?
The TNMG220408 T5125 is specified for cast iron and similar materials; the T5125 grade gives toughness for interrupted cuts and less stable setups.

How is the insert clamped in a holder?
The insert has a cylindrical hole and is clamped using the corresponding holder fastening; secure seating depends on matching form, size and tolerance class.

Can the insert be indexed to use multiple edges?
Yes, the triangular TNMG form provides three cutting edges and the double-sided chipbreaker allows two usable edges per index, increasing cost-efficiency.

Does the grade T5125 improve resistance to shock loads?
T5125 is a tougher, CVD-coated carbide grade designed to withstand interrupted cuts and shocks, offering improved edge stability over more wear-focused grades.

Which holder features are critical for compatibility?
Verify holder geometry, free angle, tolerance class, fastening type, size and thickness to ensure correct fit and reliable cutting performance.

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.