TPMN 220412 NS740 Wendeplatten - Tungaloy

Combining the NS740 cermet grade, precise 60° geometry and a 1.2 mm corner radius delivers consistent surface quality and predictable wear for finishing operations; order the insert directly via Metav Werkzeuge or consult our specialists for application support.

TPMN220412 NS740 – triangle indexable turning insert, 60° geometry, Tungaloy

The TPMN220412 NS740 is a triangle indexable insert for finishing to light turning of steel, designed for ISO-standard holders and standard turning tool systems.

• ISO-standard triangular insert for turning
• NS740 cermet grade for fine finishing
• 60° insert angle for versatile holder compatibility
• 1.2 mm corner radius for improved surface finish

High-quality finish and consistent wear for finishing cuts

The NS740 grade is presented as a cermet or coated cermet option intended specifically for finish to light machining of steel, with an emphasis on surface finish, dimensional accuracy and even wear. This combination means that cutting edges hold form over longer periods, which supports tighter tolerances and lowers the frequency of edge changes. The insert’s geometry focuses on delivering a smooth surface while maintaining repeatable performance in serial or batch production.

Geometry and system compatibility that simplify setup

With a 60° geometry and an 11° clearance angle, the insert matches common ISO triangular holder profiles and permits straightforward seat and clamp selection. Compatibility is determined by form, clearance angle, tolerance class, fastening, size and thickness; the standardised dimensions reduce setup variables and make it easier to select an appropriate external holder or boring bar. The clear, defined geometry supports stable cutting conditions and helps to maintain consistent part quality across shifts.

Tooling system and practical application advice

The tool system for this insert comprises the ISO indexable insert itself, a matching external turning holder or boring bar, underlay/clamping kit and spare screws. The product is supplied without a chipbreaker, so the grade and geometry are optimised for finishing passes rather than heavy chip control. In practice, this leads to predictable, fine-chip formation under stable conditions, better surface integrity and reduced need for rework when used with suitable feeds and cutting speeds.

How selection and handling improve productivity

Choosing the NS740 cermet grade for finishing work on steel helps to achieve high surface quality and uniform flank wear, which translates into fewer interruptions for edge changes and higher net machining output. Correct seat condition, secure clamping and verification of insert seat tolerance are essential to exploit these benefits. For customers seeking support on cutting data or holder selection, Metav Werkzeuge’s consultants provide application-oriented guidance to match the insert to machine, material and stability parameters.

For finishing-focused turning on steel, contact Metav Werkzeuge to specify the Tungaloy TPMN220412 NS740 insert and receive tailored application advice at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: 6821546
• Manufacturer SKU: TUN6821546
• SKU: 6821546-Tungaloy
• Model series: ISO turning indexable inserts
• Designation: TPMN220412

Numbers / Core technical data

• Corner radius: 1.2 mm
• Insert angle: 60°
• Clearance angle: 11°
• Plate thickness: 4.76 mm
• Plate size: 22 mm

Design / Special features

• Shape: triangular
• Grade: NS740 (cermet / coated cermet)
• Chipbreaker: none
• Hole: without hole
• Application: turning
• Compatibility determined by form, clearance angle, tolerance class, fastening, size and thickness

FAQ

What materials is this insert suitable for? The NS740 grade is designed for finishing to light machining of steel; the TPMN220412 NS740 insert is optimised for consistent surface finish and dimensional control on steel.

Does this insert include a chipbreaker? No, the insert is supplied without a chipbreaker; the absence of a chipbreaker indicates suitability for finishing cuts under stable set-ups rather than heavy roughing operations.

Which holder types are compatible with this insert? Compatibility depends on ISO-standard holder geometry—form, clearance angle, tolerance class, fastening, size and thickness determine a correct match; the 60° geometry aligns with common triangular turning holders.

What are the key dimensions and geometry details? The insert has a 60° geometry, a 1.2 mm corner radius, an 11° clearance angle and a plate thickness of 4.76 mm; these parameters are given for the TPMN220412 NS740.

Is the grade interchangeable with other finishing grades? The NS740 cermet grade is intended for fine finishing; interchangeability depends on workpiece material, required surface finish and process stability—consult Metav Werkzeuge for application-specific guidance.

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.