Tungaloy 6780709 Cnmg 643 Th T9225 Turning Insert

Product Description

The TUNGALOY 6780709 is a CNMG 643 TH indexable turning insert in grade T9225, designed for general-purpose metal cutting on CNC lathes and manual turning centers. The insert features a multilayer CVD coating stack of TiN, TiCN, and Al2O3 over a solid carbide substrate, providing thermal resistance and wear protection across a broad range of cutting conditions. The 80-degree diamond shape (C) with a negative rake angle of -20 degrees and a chamfered and honed cutting edge delivers stability under interrupted cuts and heavy feeds. With four usable cutting edges and compatibility with both clamp and pin holding methods, this insert offers consistent performance in production turning environments.

This insert is intended for turning, facing, and boring operations in ISO material groups P, M, and K - covering steel, stainless steel, and cast iron workpieces. Material grades P15 and P25 indicate suitability for light to medium roughing and finishing passes. The TH chip breaker geometry manages chip control during moderate to heavier depths of cut, making it a practical choice for production machining shops and tool rooms running steel and iron components at varied feed rates.

Key Features

• Multilayer CVD coating: TiN outer layer over Al2O3 and TiCN for heat and wear resistance
• 80-degree diamond insert shape with negative rake for strong, stable cutting edge
• TH chip breaker geometry for effective chip control in turning, facing, and boring
• Four cutting edges per insert with clamp and pin holding compatibility
• Rated for steel, stainless steel, and cast iron (ISO P, M, K material groups)
• Chamfered and honed cutting edge style reduces edge chipping at entry

Compatibility

Designed as an OEM-style replacement or direct application insert for toolholders accepting CNMG 643 geometry inserts per ANSI and ISO standards. Compatible with standard CNMG negative-rake toolholders using clamp or pin retention in the CNMG-TH series.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use a torque wrench appropriate for the clamping screw specified by the toolholder manufacturer - do not overtighten, as this can fracture the insert. Verify seating of the insert in the pocket before resuming cutting operations.