Sandvik Coromant 6256907 Grooving Insert 2mm Corocut 1-2

Product Description

The SANDVIK COROMANT 6256907 is a solid carbide grooving insert designed for precision external and internal grooving operations on CNC lathes and turning centers. It features a 2 mm cutting width and a maximum depth of cut of 5 mm, making it suited for shallow to medium-depth groove profiles. The insert carries a PVD-applied TiAlN coating for improved wear resistance and thermal stability at elevated cutting speeds. With a positive rake geometry and a 1 mm corner radius, it produces clean, controlled chip formation. This insert is installed by machinists and CNC turning technicians in production and job-shop environments.

This insert belongs to the CoroCut 1-2 series and is intended for left-hand grooving applications. It fits Insert Seat Size H holders within the CoroCut 1-2 toolholder family. Typical use cases include parting, profiling, and grooving on ferrous and non-ferrous workpiece materials in both low-volume prototype work and high-volume production runs. The RO chip breaker geometry is optimized for grooving with consistent chip control. ISO code reference is L123H1-0200-RO 1125 and the manufacturer catalog number is L123H1-0200-RO 1125.

Key Features

• Solid carbide substrate with PVD TiAlN coating for extended tool life
• 2 mm cutting width (0.0787 inches) for precise groove sizing
• Maximum depth of cut of 5 mm (0.1970 inches)
• Positive rake angle with RO chip breaker for controlled chip evacuation
• 1 mm corner radius (0.0394 inches) for accurate profile transitions
• Left-hand insert orientation for compatible CoroCut 1-2 holders

Compatibility

Designed for use with CoroCut 1-2 series toolholders that accept Insert Seat Size H. Compatible holder selection should reference Insert Style L123H1-0200 and ISO code L123H1-0200-RO 1125 to confirm proper seating and clamping geometry.

Installation Notes

Installation should be performed by a qualified machinist or CNC technician with the machine powered down and the spindle locked before changing inserts. Use the appropriate torque wrench and insert key specified by the toolholder manufacturer to secure the clamping screw — do not overtighten by feel alone. Confirm insert seating is flush against the pocket surfaces before resuming cutting operations. Follow shop safety procedures and applicable OSHA machine-guarding standards when servicing tooling on live equipment.