Ingersoll Cutting Tools 6212909 Cnmg Turning Insert

Product Description

The INGERSOLL CUTTING TOOLS 6212909 is a CNMG-style indexable turning insert designed for precision metal cutting operations on CNC lathes and turning centers. Built from solid carbide with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN in the TT8125B grade, this insert is engineered for steel turning applications where wear resistance and thermal stability are critical. The diamond-shaped insert features a negative rake geometry, a 0.031 inch corner radius, an 80-degree included angle, and four usable cutting edges, offering high efficiency per insert. The PC chip breaker geometry supports reliable chip control across a wide range of depths and feed rates.

This insert is suited for external and internal turning of steel workpieces (ISO material group P) in both roughing and semi-finishing operations. The ANSI code CNMG432PCTT8125B and ISO code CNMG120408PC TT8125B define the exact geometry and grade combination. A maximum depth of cut of 0.196 inch makes it appropriate for moderate material removal on production turning setups. The neutral hand orientation and clamp-style holding method are compatible with standard CNMG toolholders used in shop-floor and production environments.

Key Features

• Solid carbide construction with CVD multilayer TiCN/Al2O3/TiN coating (TT8125B grade) for extended tool life on steel
• Diamond insert shape (80-degree included angle) provides a strong cutting edge with good approach-angle flexibility
• Four cutting edges per insert reduce per-edge tooling cost in high-volume turning
• PC chip breaker geometry promotes consistent chip evacuation across varying feed and depth conditions
• Negative rake, neutral hand geometry fits a wide range of standard CNMG clamp-style toolholders
• Maximum depth of cut of 0.196 inch supports semi-roughing and finishing passes on steel

Compatibility

Designed for use in standard CNMG clamp-style toolholders with a 0.5 inch inscribed circle seating geometry (insert size code 432). ANSI code: CNMG432PCTT8125B. ISO code: CNMG120408PC TT8125B. Primary workpiece material designation is steel (ISO code P).

Installation Notes

Indexable turning inserts should be seated and clamped by a qualified machinist or CNC toolroom technician following the toolholder manufacturer's torque and clamping specifications. Ensure the machine spindle is fully stopped and the turret is in a safe index position before changing or rotating inserts. Inspect the insert pocket and clamping screw for wear or debris before seating a new cutting edge. Follow all applicable shop safety procedures for handling sharp carbide inserts.