Sandvik Coromant 7861024 Cutoff Insert Corocut Qd

Product Description

The SANDVIK COROMANT 7861024 is a CoroCut QD series carbide cutoff insert designed for parting and grooving operations on CNC lathes and turning centers. Carrying ISO code QD-NH-0400-0002-CM and grade 4425, this insert features a 0.157 inch cutting width and a neutral lead angle, making it suitable for straight plunge-cut parting applications. The CVD-applied TiCN/Al2O3/TiN multilayer coating provides wear resistance across a range of workpiece materials. The CM chipbreaker geometry promotes controlled chip evacuation during cutoff cycles. This insert is installed by machinists and CNC turning specialists in production and job-shop environments.

This insert fits CoroCut QD toolholders configured for the QD-N insert style with H size code. It is suited for parting operations on bar-fed lathes and turning centers where consistent chip control and groove width accuracy are required. The neutral cutting direction and 0-degree lead angle make it appropriate for standard radial cutoff work. With a 7-degree relief angle and a 0.0079 inch corner radius, it is well matched to medium and finishing passes in cutoff applications across steel and other common turned materials.

Key Features

• 0.157 inch cutting width for precise parting and grooving
• CVD-coated TiCN/Al2O3/TiN multilayer finish for extended tool life
• Neutral lead angle and neutral insert hand for straight radial cutoff
• CM chipbreaker geometry for controlled chip evacuation
• Grade 4425 carbide substrate with 7-degree relief angle
• 0.0079 inch corner radius for accurate groove-bottom geometry

Compatibility

Designed for use in CoroCut QD series toolholders accepting QD-N style inserts with H size code. ISO code QD-NH-0400-0002-CM 4425 identifies the exact toolholder seat and clamping configuration required.

Installation Notes

This insert is installed by qualified machinists or CNC turning technicians. Power down and lock out the machine spindle before seating or replacing the insert. Use the appropriate torx or clamping screw driver specified for the CoroCut QD toolholder to secure the insert to the correct torque per the toolholder documentation. Inspect the insert pocket for chips or debris before installation to ensure proper seating and cutting-edge geometry.