Sandvik Coromant 7861035 Turning Insert Ccmt 4425 Carbide

Product Description

The SANDVIK COROMANT 7861035 is a CCMT-style indexable turning insert from the CoroTurn 107 series, designed for external and internal turning operations on CNC lathes and turning centers. It carries manufacturer grade 4425 and features a CVD-applied multilayer coating of Al2O3, TiCN, and TiN over a solid carbide substrate. The insert has an 80-degree diamond shape, a 3/8-inch inscribed circle, and a 0.0079-inch corner radius. The PF chip breaker geometry is optimized for light-to-medium finishing cuts. This insert is installed by machinists and CNC operators performing precision turning in production and job-shop environments.

This insert is engineered primarily for turning steel (ISO material group P) and cast iron (ISO material group K). The PF chip breaker and 4425 grade combination suits finishing and semi-finishing passes where tight tolerances and consistent surface finish are priorities. The neutral hand orientation allows use in both right-hand and left-hand toolholders configured for CCMT inserts. The CoroTurn 107 series targets applications where both clamp and screw holding methods are used in standard CCMT-profile toolholders.

Key Features

• CVD multilayer coating: Al2O3, TiCN, and TiN for wear resistance and thermal stability on steel and cast iron
• PF chip breaker geometry suited for finishing and light semi-finishing cuts
• 80-degree diamond insert shape with 7-degree relief angle for positive cutting action
• 0.0079-inch corner radius for fine surface finish requirements
• Two cutting edges per insert maximize tool life per unit
• Clamp and screw holding compatibility for secure seating in CCMT toolholders

Compatibility

Designed for use in CCMT-profile toolholders compatible with the CoroTurn 107 series. ISO code CCMT 09 T3 02-PF 4425. Industry standard number CCMT 09 T3 02-PF 4425. Manufacturers catalog number CCMT 3(2.5)0-PF. Primary workpiece material: Steel (ISO P). Secondary workpiece material: Cast Iron (ISO K).

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 driver or insert screw per the toolholder manufacturer's specification for screw-held styles; over-tightening can fracture the insert. Confirm insert seating and clearance before resuming cutting operations.