CNMG 120408 T9225 Wendeplatten - Tungaloy

Take advantage of the combination of robust CVD-coated carbide performance and ISO interchangeability for steady turning results; benefit from the T9225 grade's toughness in medium to heavy steel machining and order via Metav Werkzeuge or consult their specialists for holder compatibility.

CNMG 120408 T9225 indexable turning insert — CVD-coated carbide for turning, Tungaloy

The CNMG120408 T9225 is an ISO-standard rhombic indexable insert designed for external and internal turning, offering a robust universal grade for medium to heavy steel machining where variable engagement or slightly interrupted cuts demand increased toughness.

• ISO CNMG 120408 geometry
• CVD-coated carbide grade T9225
• Robust universal grade for steel machining
• 0° rake angle with 0.8 mm corner radius
• Double-sided chipbreaker, with cylindrical hole

Precision geometry for reliable tool matching

The insert follows the ISO-standard CNMG geometry, guaranteeing repeatable fitment in compatible holders and boring bars when form, relief angle, tolerance class, fastening method, size and thickness align. The 80° included angle and rhombic shape provide a stable seat in external turning operations, while the 4.76 mm thickness and cylindrical locating hole ensure secure clamping and concentricity. This geometric consistency reduces setup deviations and supports predictable tool life across production batches.

Coating and grade engineered for tough steel work

A CVD coating over a high-quality carbide substrate gives the T9225 grade improved wear resistance and a stable cutting edge under varying loads. Designed as a robust universal grade, the material mix provides the necessary toughness for medium to heavy machining of steel, performing well with slightly interrupted cuts and fluctuating engagement. The result is consistent surface finish and less frequent edge failure compared with uncoated or less tough grades.

Chip control and operational productivity

Integrated double-sided chipbreakers promote effective chip formation and evacuation in turning, helping to protect the tool edge and workpiece while shortening cycle times. The 0.8 mm corner radius balances edge strength with accessible cutting geometries for finishing and semi-finishing passes. Together, these features support higher productivity and predictable running, translating into fewer tool changes and reduced downtime on the shop floor.

System approach and selection guidance

The insert is intended to be used as part of a system consisting of an ISO insert, a matching external holder or boring bar, a shim/clamping set and replacement screws. Material compatibility and the required chipformer should be selected according to workpiece material, cutting mode and machine stability. For customers seeking the best match between insert shape, T9225 grade and holder geometry, technical consultation is recommended to optimise cutting data and secure maximum performance.

Contact Metav Werkzeuge for tailored recommendations on Tungaloy CNMG120408 inserts, or request assistance with holder compatibility via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6780672
• Manufacturer SKU: TUN6780672
• Metav SKU: 6780672-Tungaloy
• Designation: CNMG120408
• Model series: ISO-d indexable turning inserts

Facts

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Relief (rake) angle: 0°
• Included angle: 80°

Special features

• Material: carbide
• Coating/grade: CVD-coated (T9225)
• Plate form: rhombic
• Hole: with cylindrical hole
• Chipbreaker: double-sided
• Typical application: turning; suitable for medium to heavy steel machining
• System components: insert, external holder/boring bar, shim/clamping set, replacement screws

FAQ

What materials is this insert suited for?
The CNMG120408 T9225 insert is specified for steel machining, with the T9225 grade providing toughness for medium to heavy turning operations.

How does the T9225 grade improve machining stability?
The CVD-coated carbide T9225 offers enhanced wear resistance and edge strength, which helps maintain cutting stability under fluctuating engagement or slightly interrupted cuts.

What are the key geometric dimensions to check for compatibility?
Check the insert designation CNMG120408 (12 mm), thickness 4.76 mm, corner radius 0.8 mm and the 80° included angle to ensure the insert matches the holder and clamping system.

Does the insert include a locating hole and what type is it?
Yes, this insert is supplied with a locating hole — a cylindrical hole appropriate for secure clamping in standard ISO holders.

Can the CNMG120408 be used for finishing passes?
With its 0.8 mm corner radius and robust T9225 grade, the insert supports semi-finishing and certain finishing passes while maintaining good edge strength.

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.