CNMG 120412 T5125 Wendeplatten - Tungaloy

Take advantage of the CVD-coated T5125 grade and the robust CNMG geometry to secure reliable performance in interrupted turning; the combination of a 1.2 mm corner radius and a rhombic 80° profile offers improved edge strength and axial engagement for cast-iron work. Order directly via Metav Werkzeuge or consult Metav Werkzeuge for application-specific advice.

CNMG120412 T5125 Tungaloy indexable turning insert — rhombic CNMG geometry, 80° main angle

CNMG120412 T5125 is an ISO-standard indexable insert designed for general turning operations, especially suited to interrupted cuts in cast iron and less stable machining conditions.

• CVD-coated T5125 carbide grade
• Double-sided chipbreaker for process flexibility
• Rhombic CNMG 80° geometry
• Corner radius 1.2 mm for robust edges
• Cylindrical hole for secure clamping

Consistent cutting in interrupted turning

The CVD-coated T5125 grade provides a tougher coating architecture intended to endure shocks and fluctuations common in interrupted cuts. This makes the insert particularly apt for cast-iron machining where chip formation and edge stability are critical. The rhombic CNMG geometry, paired with an 80° main angle, improves axial engagement and distributes cutting forces across a broader land, reducing the risk of premature chipping. As a result, production runs gain in process stability and require fewer unscheduled tool changes, which translates into measurable time savings on the shop floor.

Secure clamping and ISO compatibility for predictable setup

Delivered as an ISO-standard turning insert, the design of the plate — including its cylindrical locating hole and defined thickness — ensures repeatable positioning in compatible CNMG holders. Compatibility depends on form, clearance angle, tolerance class, fastening method, size and thickness; the supplied specification simplifies selection of a matching seat and clamp. The double-sided chipbreaker provides two usable cutting edges per side, improving economy per insert and allowing quick reversal when one edge reaches wear limits. This combination supports consistent set-up times and predictable component tolerances.

Designed for reliability and surface quality under real conditions

A 1.2 mm corner radius and a plate thickness of 4.76 mm create a resilient cutting edge capable of absorbing intermittent loads while maintaining surface finish. The T5125 combination of substrate and CVD coating is optimised for cast iron and offers good wear behaviour in less than ideal conditions, such as poor stability or interrupted engagement. Selecting the appropriate chipbreaker and matching the insert grade to the workpiece material helps balance tool life against finish requirement; this insert supports efficient metal removal without compromising repeatability or dimensional control.

For application advice or to order CNMG120412 T5125 from Metav Werkzeuge, please contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 for prompt, expert assistance.

Technical data

• Article number: 6852912
• Manufacturer SKU: TUN6852912
• Vendor SKU: 6852912-Tungaloy
• Brand: Tungaloy
• Model series: ISO turning indexable inserts
• Designation: CNMG120412 T5125 Tungaloy insert
• Application: Turning
• Material: Carbide
• Coating/grade: T5125
• Shape: Rhombic (CNMG)
• Hole style: Cylindrical hole

Facts

• Corner radius: 1.2 mm
• Main angle: 80°
• Clearance angle: 0°
• Plate thickness: 4.76 mm
• Plate size: 12 mm

Special features

• CVD-coated carbide grade T5125
• Double-sided chipbreaker
• Suited for cast-iron interrupted cuts
• ISO-standard geometry for holder compatibility
• Robust edge for less stable machining conditions

FAQ

Is this insert suitable for interrupted turning in cast iron?
Yes. The CNMG120412 T5125 insert is specifically designed with a tougher CVD-coated grade to handle interrupted cuts in cast iron and maintain edge stability.

How does the 1.2 mm corner radius affect performance?
A 1.2 mm corner radius increases edge strength and shock resistance, making the insert more tolerant of variable engagement and improving tool life in demanding turning operations.

Can the insert be used on standard CNMG holders?
Yes. The insert follows ISO CNMG geometry; compatibility depends on holder form, clearance, tolerance, fastening and thickness, so matching these parameters ensures secure clamping.

What benefits does the double-sided chipbreaker provide?
The double-sided chipbreaker offers process flexibility and two usable cutting edges per side, improving economy per insert and allowing quick reversal when an edge becomes worn.

Which materials and conditions is the T5125 grade optimised for?
The T5125 CVD-coated carbide grade is optimised for cast iron and for machining under less stable or interrupted conditions where toughness and consistent chip control are required.

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.