Ingersoll Cutting Tools 6212177 Cnmg Turning Insert TT8125B

Product Description

The INGERSOLL CUTTING TOOLS 6212177 is a CNMG-style indexable turning insert designed for metal cutting on CNC lathes and turning centers. Built from solid carbide with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN under the TT8125B grade designation, this insert is engineered for productive turning in steel applications. The diamond-shaped insert body carries a negative rake geometry and a 0 degree relief angle, delivering strong cutting-edge support and extended tool life under moderate to aggressive feed conditions. The 0.0310-inch corner radius and PC chip breaker geometry help manage chip flow across a range of cut depths and feed rates.

This insert is suited for external and internal turning operations on ferrous workpieces, particularly low-alloy and medium-carbon steels. The CNMG form factor fits standard CNMG-style toolholders with a clamp-style insert holding method. With four usable cutting edges per insert, it provides efficient cost-per-edge performance in production turning environments. Typical applications include shaft turning, facing, and profiling on CNC equipment operated by machinists and tool-and-die professionals in job shop and production settings.

Key Features

• Solid carbide construction with CVD multilayer TiCN/Al2O3/TiN coating for wear and thermal resistance
• TT8125B manufacturer grade optimized for steel turning (ISO material code P)
• Diamond insert shape (80 degree included angle) with negative rake for strong edge support
• Four indexable cutting edges per insert for low cost per edge
• PC chip breaker geometry assists chip control across varying depths of cut
• Maximum depth of cut up to 0.3150 inches; 0.0310-inch corner radius for moderate finishing and semi-finishing

Compatibility

Designed for use in CNMG-style clamp-type toolholders accepting a 3/4-inch inscribed circle insert. ANSI code CNMG642PCTT8125B; ISO code CNMG190608PC TT8125B.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Seat the insert firmly against the toolholder pocket seat and torque the clamping screw according to the toolholder manufacturer specifications. Inspect the insert pocket and shim for wear or debris before seating a new edge.