Sandvik Coromant 7861067 Turning Insert TCMT222-PM 4425

Product Description

The SANDVIK COROMANT 7861067 is a TCMT-style triangular turning insert engineered for precision external turning operations on CNC lathes and turning centers. Manufactured from solid carbide and finished with a multilayer CVD coating of Al2O3, TiCN, and TiN under grade 4425, this insert delivers wear resistance and thermal stability across demanding cutting conditions. The 60-degree included angle and 1/32-inch corner radius make it well suited for general profiling and longitudinal turning. With three usable cutting edges per insert and a neutral hand designation, it supports efficient edge utilization and straightforward indexing. The insert is held by clamp or screw, consistent with standard TCMT toolholder systems.

This insert is designed primarily for machining steel and cast iron, making it a reliable choice for job shops and production environments running parts in these material families. The CoroTurn 107 series designation indicates compatibility with the corresponding toolholder platform. The PM chip breaker geometry is optimized for medium cutting conditions, providing controlled chip formation across a range of depths and feed rates. It is appropriate for both roughing and semi-finishing passes depending on cutting parameters.

Key Features

• Multilayer CVD coating: Al2O3, TiCN, and TiN for heat and wear resistance
• Grade 4425 carbide substrate suited for steel and cast iron applications
• 60-degree triangle insert shape with 3 usable cutting edges
• PM chip breaker geometry for controlled chip formation in medium cutting
• Neutral hand orientation for flexible toolholder mounting
• Clamp and screw holding method compatible with standard TCMT toolholders

Compatibility

Designed for use in the SANDVIK COROMANT CoroTurn 107 toolholder system. ISO code TCMT 11 03 08-PM 4425 can be used to cross-reference compatible toolholders and equivalent inserts. Primary workpiece material is steel (ISO code P); secondary workpiece material is cast iron (ISO code K).

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician familiar with indexable insert tooling. Power down and lock out the machine before indexing or replacing inserts. Use the appropriate torque wrench and insert screw per the toolholder manufacturer specifications when securing the insert via screw-lock. Inspect the seating pocket and clamp for wear or debris before mounting a new insert to ensure proper edge positioning.