Sandvik Coromant 7860966 Turning Insert CP-A1108-L5 4425

Product Description

The SANDVIK COROMANT 7860966 is a solid carbide turning insert in the CoroTurn Prime series, designed for precision turning operations on CNC lathes and turning centers. The insert carries the ISO code CP-A1108-L5 4425 and features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN for extended tool life in demanding cutting conditions. It has an 11 mm inscribed circle, a 0.79 mm corner radius, and a triangular insert shape with three cutting edges. The manufacturer grade 4425 is formulated for steel and cast iron workpiece materials. This insert is installed by machinists and CNC tooling technicians in production and job-shop environments.

The 7860966 is suited for external and internal turning applications where consistent surface finish and tool life are priorities. Its neutral hand orientation and L5 chip breaker geometry make it adaptable across a range of cutting depths and feed rates. Primary workpiece material is steel (ISO material code P), with secondary suitability for cast iron (ISO material code K). It is a fit for medium to finishing passes in production turning. The CoroTurn Prime platform uses a clamp and screw holding method, providing secure seating under interrupted and continuous cutting loads.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for wear resistance and thermal stability
• Triangular insert shape (code A) with 3 cutting edges for cost-per-edge efficiency
• 11 mm inscribed circle and 0.79 mm corner radius for precision finish work
• L5 chip breaker geometry optimized for steel and cast iron workpieces
• Neutral hand orientation for flexible toolholder compatibility
• Clamp and screw holding method for rigid, repeatable insert positioning

Compatibility

Designed for use with CoroTurn Prime toolholders that accept CP-style triangular inserts with an 11 mm inscribed circle and clamp or screw retention. Compatible workpiece materials include steel (ISO P) and cast iron (ISO K). Specific toolholder compatibility should be verified against SANDVIK COROMANT CoroTurn Prime system documentation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and seating key specified for the CoroTurn Prime toolholder to avoid insert damage or improper seating. Inspect the insert pocket and seating surface for chips or debris before installing a new insert.