Tungaloy 6781066 Turning Insert TCMT16T308-PS T9225

Product Description

The TUNGALOY 6781066 is a TCMT-series triangular carbide turning insert designated TCMT16T308-PS in the T9225 grade. It features a multilayer CVD coating of TiN, TiCN, and Al2O3 TiN that provides wear resistance and thermal stability during continuous and interrupted cuts. The insert has a 3/8-inch inscribed circle, a 0.0313-inch corner radius, a positive rake angle of 10 degrees, and a honed cutting edge style. The PS chip breaker geometry is engineered for reliable chip control across a broad range of cutting conditions. This insert is used by machinists and CNC turning specialists in production and job-shop environments.

The 6781066 is suited for turning, facing, and boring operations on steel, stainless steel, and cast iron workpieces. Its ISO material grade designations of P15 and P25 place it in the light-to-medium roughing range for ferrous materials. The insert conforms to both ANSI and ISO standards and carries the industry standard number TCMT 32.52 PS, making it straightforward to cross-reference against other TCMT-format inserts. It is appropriate for use in screw-clamp toolholders designed for the TCMT insert style.

Key Features

• Multilayer CVD coating (TiN / TiCN / Al2O3 / TiN) for extended tool life on ferrous materials
• T9225 manufacturer grade rated for P15-P25 steel and stainless steel applications
• PS chip breaker geometry supports turning, facing, and boring with positive rake action
• 3 cutting edges per insert with neutral hand orientation
• Honed cutting edge style reduces micro-chipping at the edge line
• Conforms to ANSI and ISO standards; cross-references to TCMT 32.52 PS industry number

Compatibility

Designed for use in TCMT-style screw-clamp toolholders accepting a 3/8-inch inscribed circle triangular insert with a 7-degree relief angle (clearance code C, tolerance code M). Primary workpiece materials are steel (P), stainless steel (M), and cast iron (K).

Installation Notes

Installation is performed by a qualified machinist or CNC technician. Power down and lock out the machine spindle before seating or removing the insert. Secure the insert using the designated clamp screw for TCMT-style holders and verify the insert is fully seated in the pocket before resuming operation. Follow the toolholder manufacturer's clamping torque guidelines and inspect the cutting edge and chip breaker for wear at regular intervals.