Ingersoll Cutting Tools 6212726 Cnmg Turning Insert TT8125B

Product Description

The INGERSOLL CUTTING TOOLS 6212726 is a CNMG-style carbide turning insert designed for precision external turning operations on steel workpieces. Built to ISO code CNMG090408FM in grade TT8125B, this insert features a CVD-applied multilayer coating of Al2O3, TiCN, and Titanium Nitride for wear resistance and thermal stability at cutting speed. The diamond-shaped insert body carries a negative rake geometry with a 0-degree relief angle and an 80-degree included angle. Corner radius measures 0.0310 inches with an inscribed circle of 0.3750 inches. It is installed by licensed machinists and CNC operators in production and job-shop turning environments.

This insert is suited for longitudinal turning, facing, and profiling of steel components on CNC lathes and turning centers. The FM chip breaker geometry is optimized for controlled chip evacuation during medium-duty steel cutting. With a maximum depth of cut of 0.0800 inches and a neutral hand orientation, it fits standard CNMG toolholders with a clamp-style holding method. Primary workpiece material classification is Steel (ISO P). Applications include shaft turning, flange facing, and general-purpose steel part production in both high-volume and low-volume shop settings.

Key Features

• CVD-applied multilayer coating: Al2O3, TiCN, and Titanium Nitride for extended tool life on steel
• TT8125B manufacturer grade engineered for primary steel (ISO P) cutting applications
• FM chip breaker geometry promotes reliable chip control in medium-duty turning
• 4 usable cutting edges per insert for cost-effective tool management
• Negative rake, 0-degree relief (Clearance Code N, Tolerance Code M) for secure seating in clamp-style holders
• Diamond insert shape (80-degree included angle) provides a strong cutting edge for interrupted and continuous cuts

Compatibility

Designed as an OEM-style replacement for CNMG-style turning insert applications; compatible with standard clamp-style CNMG toolholders accepting a 3/8-inch inscribed circle insert with ISO designation CNMG090408FM.

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. Use the correct torque wrench and manufacturer-specified clamp hardware when seating the insert to ensure proper clamping force without over-stressing the insert body. Inspect the toolholder pocket for chips or damage before seating a new insert edge.