TNMG 160408 T5125 Wendeplatten - Tungaloy

Combining a CVD-coated carbide grade and a double-sided chipbreaker, this insert provides robust chip control and extended tool life for interrupted turning operations. Its ISO-compatible TNMG geometry and 0.8 mm corner radius make it a pragmatic choice where stability is limited; order via Metav Werkzeuge or consult the technical team for selection support.

TNMG160408 T5125 TNMG indexable turning insert by Tungaloy — CVD-coated carbide, 60° triangular

The TNMG160408 T5125 is an ISO-format triangular insert designed for general external and internal turning, offering enhanced chip control and a tougher grade for cast-iron work under interrupted cuts

• TNMG 160408 geometry, 60° included angle
• CVD-coated carbide grade T5125 for cast iron
• Double-sided chipbreaker for reliable chip control
• Triangular insert with 0.8 mm corner radius

Reliable chip control for interrupted turning

The combination of a CVD-coated carbide substrate and a double-sided chipbreaker yields consistent chip formation even in less rigid setups. The coating improves resistance to built-up edge and flank wear, while the chipbreaker directs swarf away from the cutting edge, reducing re-cutting. This results in more stable cutting forces and a measurable improvement in surface finish on interrupted profiles. For production contexts where repeatability matters, the insert’s design reduces downtime related to chip jams and frequent edge changes.

ISO compatibility and rapid changeover for uptime

Designed to conform to ISO dimensions, the insert fits standard TNMG toolholders when matched by form, clearance angle and tolerance class. The 60° triangular shape provides three usable edges per side when indexed, increasing effective life per insert. Key dimensions such as the 0.8 mm corner radius and 4.76 mm plate thickness ensure predictable engagement with the workpiece and compatible clamping in the holder. The central cylindrical hole supports secure fastening with standard screws and shims, enabling quick index-and-go changeovers on the shop floor and helping to maintain production flow.

Tougher grade for cast iron and unstable conditions

Grade T5125 is a tougher, CVD-coated composition optimised for machining cast iron under interrupted cutting or where rigidity is limited. The material pairing reduces edge chipping and improves resistance against mechanical shock, so the cutting edge remains reliable on part features such as interrupted grooves or cross-holes. Where finishing demands are moderate and component geometry imposes force variations, this grade provides a balance between wear resistance and fracture toughness that supports longer tool life and fewer unplanned tool changes.

System setup and selection guidance for predictable results

A productive setup comprises the insert, a matching external holder or boring bar, a compatible shim/clamp set and spare fastening screws. Selection of the correct chipbreaker and the T5125 grade should be driven by workpiece material, type of cut (continuous versus interrupted) and machine–fixture rigidity. Technical advisors can assist with matching insert geometry and holder clamping to application-specific parameters, ensuring the solution delivers the intended efficiency gains and surface quality.

For interrupted turning tasks where chip control and edge robustness are essential, specify Tungaloy’s TNMG160408 T5125 inserts via Metav Werkzeuge; for application matching and rapid supply contact Metav Werkzeuge at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6850293

• SKU: 6850293-Tungaloy

• Manufacturer SKU: TUN6850293

• Brand: Tungaloy

• Model series: ISO turning inserts

• ISO designation: TNMG160408

Facts

• Corner radius: 0.8 mm
• Plate thickness: 4.76 mm
• Inscribed circle / size: 16 mm
• Included angle: 60°
• Clearance angle: 0°
• Hole: with cylindrical hole

Special features

• Material: carbide
• Grade: T5125
• Coating: CVD-coated carbide
• Chipbreaker: double-sided
• Shape: triangular
• Application: turning (external and internal)
• Compatibility: ISO-format holders; selection based on form, clearance angle, tolerance, attachment, size and thickness

FAQ

What material is the TNMG160408 T5125 best suited for? The TNMG160408 T5125 is formulated for machining cast iron and performs well in interrupted cuts or less rigid setups, thanks to its tougher T5125 CVD-coated carbide grade.

How many cutting edges are available per insert index? The triangular TNMG geometry provides multiple usable edges per index; the TNMG160408 format allows indexing to present fresh cutting edges as required.

Which holder features are necessary for correct compatibility? Compatibility depends on matching the insert form, clearance angle, tolerance class, fastening method, size and thickness to the chosen external holder or boring bar.

Is this insert suitable for finishing passes? While the T5125 grade emphasises toughness for interrupted cutting and cast iron, surface finish will benefit from appropriate feed and speed settings; the chipbreaker supports controlled swarf evacuation to aid finish.

What components are included in the system for mounting the insert? A full setup typically comprises the insert, a matching holder or boring bar, a shim/clamp set and replacement screws to secure the insert in the tool assembly.

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.