Sandvik Coromant 7861017 Cutoff Insert Corocut Qd

Product Description

The SANDVIK COROMANT 7861017 is a carbide cutoff insert in the CoroCut QD series, designed for parting and grooving operations on CNC lathes and turning centers. It carries a 0.0984-inch cutting width, a neutral lead angle, and a 7-degree relief angle for clean, stable cuts. The insert is manufactured to ISO code QD-NF-0250-0002-CM 4425 and uses a CVD-applied TiCN/Al2O3/TiN multilayer coating for heat and wear resistance. Grade 4425 carbide substrate and the CM chipbreaker geometry make this insert well suited to consistent, high-volume parting work. Machinists and tool-and-die professionals specify this insert for precision cutoff applications where dimensional repeatability is critical.

This insert fits CoroCut QD series toolholders and is intended for parting and grooving on bar stock, turned components, and similar workpieces in production turning environments. The neutral hand and neutral lead angle make it appropriate for straight plunge cutoff operations. It is used in both production shops and job shops running CNC or manual lathes where consistent grooving and parting performance is required. The CM chipbreaker geometry supports chip control across a range of materials at standard parting feeds.

Key Features

• 0.0984-inch cutting width for precise parting and grooving operations
• Neutral lead angle and neutral hand for straight plunge cutoff
• Grade 4425 carbide substrate with CVD-applied TiCN/Al2O3/TiN multilayer coating for extended tool life
• CM chipbreaker geometry for controlled chip evacuation
• 7-degree relief angle provides clearance and edge stability
• Corner radius of 0.0079 inches for fine surface finish at the cutoff groove

Compatibility

Designed as an OEM-style replacement insert for CoroCut QD series toolholders in standard parting and grooving applications on CNC and manual turning equipment.

Installation Notes

Insert installation and replacement should be performed by a qualified machinist with the machine fully stopped and the spindle locked out per applicable shop lockout/tagout procedures. Use the correct torque wrench or insert key specified for the CoroCut QD toolholder seat to avoid seat damage or insert fracture. Inspect the insert pocket and clamping screw for wear or debris before seating a new insert. Never run a visibly chipped or cracked insert.