SNMG 120408 T5125 Wendeplatten - Tungaloy

Robust CVD-coated carbide in grade T5125 combines good chip control with resistance to wear, while the ISO SNMG120408 geometry and 0.8 mm corner radius ensure straightforward integration into standard holders; Order the SNMG120408 T5125 Tungaloy indexable insert directly via Metav Werkzeuge or ask our consultants if needed.

SNMG120408 T5125 Tungaloy indexable turning insert — CVD-coated carbide, 0.8 mm corner radius

A SNMG120408 T5125 Tungaloy insert designed for ISO‑standard external and internal turning, optimised for interrupted cuts and less stable machining conditions.

• SNMG120408 ISO turning insert, square form
• CVD-coated carbide grade T5125
• 0.8 mm corner radius, 90° cutting angle
• Double-sided chipbreaker, cylindrical hole

Stable machining in interrupted cast‑iron turning

The CVD‑coated carbide composition of this grade provides a balance between toughness and wear resistance, which translates into fewer insert changes and more consistent cycle times. The ISO indexable geometry delivers repeatable seating and clamping, reducing process variability in batch production. With a double-sided chipbreaker configured for interrupted cutting, the tool maintains controlled chip flow during unstable cuts, enhancing overall process reliability.

Simple integration with ISO holder systems

Designed to the ISO designation SNMG120408, the insert fits common square insert holders and boring bars when the holder matches the insert form, clearance and tolerance class. The presence of a cylindrical hole eases secure fastening and alignment in most standard clamping systems, so compatibility checks are limited to form, size and thickness rather than bespoke adapters. This reduces setup time and allows faster tool changes on the shop floor.

Economy through extended tool life and predictability

Grade T5125 is a CVD-coated grade formulated for more ductile cast iron applications and for conditions where tool stability is not optimal. The combination of coating and substrate increases resistance to crater wear and edge chipping, which often extends usable life under interrupted operations. For production runs where replacement frequency affects throughput, the predictable wear behaviour supports tighter maintenance planning and lower overall tooling cost per part.

Practical guidance for application and selection

The insert is suitable for both external and internal turning of cast iron; selection of the exact chipbreaker and grade should match workpiece material, cutting mode and machine rigidity. The 0.8 mm corner radius and 90° cutting angle provide a compromise between edge strength and achievable contour detail — beneficial where edge robustness is required without sacrificing dimensional control. For less stable setups, choose a holder with solid support and the correct screw/clamping set to make full use of the insert’s performance.

For reliable cast‑iron turning with Tungaloy quality, contact Metav Werkzeuge for stock details and application advice by email or phone.

Technical data

• Article number: 6850251
• Manufacturer SKU: TUN6850251
• SKU: 6850251-Tungaloy
• Model series: ISO turning indexable inserts
• Application: Turning

Core dimensions

• ISO designation: SNMG120408
• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 0.8 mm
• Cutting angle: 90°
• Clearance angle: 0°
• Hole: with hole (cylindrical)

Design & features

• Coating: CVD‑coated carbide
• Grade: T5125
• Material: Carbide
• Plate form: square
• Chipbreaker: double‑sided
• Suitable for: interrupted cuts, cast iron

FAQ

What materials is this insert intended for?
The SNMG120408 T5125 Tungaloy indexable insert is optimised for cast iron applications and performs well under interrupted cuts and less rigid machining conditions.

Is the insert compatible with standard ISO holders?
Yes; the SNMG120408 geometry follows ISO standards, so compatibility depends on matching holder form, clearance and thickness.

What advantages does grade T5125 offer?
Grade T5125 combines a CVD coating with a tough substrate to enhance chip control and resist edge chipping, extending usable life in challenging turning operations.

How does the 0.8 mm corner radius affect performance?
A 0.8 mm corner radius increases edge strength and reduces the risk of chipping while still allowing satisfactory contouring and dimensional accuracy.

Can the insert be used for internal turning as well as external?
The insert geometry and cylindrical hole allow use in both external and internal turning when installed in a suitably dimensioned holder.

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.