CNMG 190612 T5125 Wendeplatten - Tungaloy

Reliable machining performance for interrupted cuts and less stable setups is achieved by the combination of the 80° rhombic geometry, CVD-coated T5125 grade and a 1.2 mm corner radius that secures the cutting edge; the insert is optimised for turning cast iron. Order the CNMG190612 T5125 turning insert via Metav Werkzeuge or consult our specialists for tailored selection support.

CNMG190612 T5125 — ISO turning indexable insert for turning, Tungaloy

A CNMG190612 T5125 indexable insert engineered for external and internal turning, optimised for cast iron and designed to perform under interrupted cuts and less stable machining conditions

• CNMG190612 ISO geometry, 80° rhombic shape
• CVD-coated carbide (T5125) for tough cast iron
• 1.2 mm corner radius for robust edge strength
• Double-sided chipbreaker, cylindric hole fastening

Reliable chip control for interrupted turning operations

The double-sided chipbreaker and CVD surface treatment deliver consistent chip control even during interrupted cuts. This design reduces the risk of built-up edge and promotes stable evacuation of chips, so the cutting process remains predictable in stop‑start conditions. The tougher T5125 grade is formulated to resist chipping and maintain edge integrity when the cut is unstable, which translates into fewer unscheduled tool changes and improved process efficiency.

Geometry that combines strength with accessibility

The 80° rhombic geometry provides a balance between rigidity and cutting-edge access: the included angle supplies support for the cutting edge while allowing effective approach angles for external and internal profiles. The 1.2 mm corner radius increases edge durability, lowering the likelihood of premature failure on interrupted surfaces. Together, these geometrical aspects enable higher allowance for micro‑vibrations and moderate machine rigidity without sacrificing surface quality.

Coating and material engineered for cast iron

Constructed from cemented carbide and finished with a CVD coating (T5125), the insert is particularly suited to cast iron applications where toughness is required. The coating enhances wear resistance and helps maintain a stable cutting edge at elevated temperatures. For users moving from general‑purpose grades, this combination offers a clear advantage in productivity when the workpiece material and cutting conditions demand improved fracture resistance rather than only maximum hardness.

System compatibility and practical benefits in the tool room

Compatibility with holders depends on form, relief angle, tolerance class, fixation, size and thickness; the ISO standardised CNMG format and the supplied dimensions (inscribed circle 19 mm, thickness 6.35 mm) simplify holder selection and stock management. The cylindric hole enables secure fastening in many standard holder systems. Using an ISO‑conforming insert streamlines tooling logistics and reduces setup time, contributing directly to predictable throughput in production environments.

For personalised guidance on selecting Tungaloy turning inserts such as the CNMG190612 T5125 and to ensure the grade and chipbreaker match the intended cast iron application, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 for expert assistance

Technical data

• Article number: 6850171
• SKU: 6850171-Tungaloy
• Manufacturer SKU: TUN6850171
• Manufacturer article number: 6850171
• Model series: ISO turning indexable inserts

Facts

• Inscribed circle: 19 mm
• Plate thickness: 6.35 mm
• Corner radius: 1.2 mm
• Cutting angle: 80°
• Relief angle: 0°
• Double-sided insert

Special features

• Material: carbide
• Coating: T5125 (CVD)
• Chipbreaker: double-sided
• Plate shape: rhombic
• Hole: cylindrical hole, with hole
• Application: turning; suitable for cast iron; interrupted cuts

FAQ

Which materials suit this insert best? The CNMG190612 T5125 insert is optimised for cast iron; the T5125 grade and CVD coating favour tougher, interrupted cutting of cast iron materials.

What does the 80° rhombic geometry and 1.2 mm radius mean in practice? An 80° rhombic form with a 1.2 mm corner radius offers enhanced edge support and access to external and internal contours, improving edge life and reducing chipping during unstable cuts.

How to check holder compatibility for an ISO CNMG insert? Compatibility is governed by form, relief angle, tolerance, fixation, size and thickness; verify the holder matches the CNMG190612 dimensions and fastening style before assembly.

Is the chipbreaker suitable for heavy interrupted cuts? The double-sided chipbreaker provides consistent chip control in interrupted or irregular cuts, and the tougher T5125 grade reduces risk of edge fracture under such conditions.

Can the insert be indexed to use both sides? Yes, the insert is double-sided and can be rotated to present a fresh cutting edge, extending the service life per index cycle.

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.