Sandvik Coromant 7861026 Cutoff Insert Corocut Qd

Product Description

The SANDVIK COROMANT 7861026 is a carbide cutoff insert designed for parting and grooving operations on CNC lathes and turning centers. Built to the CoroCut QD series specification, this insert carries the ISO code QD-NH-0400-0003-CR 4425 and features a 0.157-inch cutting width with a neutral lead angle and neutral hand orientation. The grade 4425 substrate is coated with a CVD-applied TiCN/Al2O3/TiN multilayer finish that resists heat and abrasion during interrupted and continuous cuts. A 7-degree relief angle and 0.0118-inch corner radius (chipbreaker code CR) define the cutting geometry. This insert is installed by machinists and CNC turning specialists in production and job-shop environments.

The 7861026 is suited for parting off bar stock and grooving operations on steel, stainless steel, and other materials where a neutral cutting direction is required. The CoroCut QD system is engineered for stable, precise cutoff work on medium to large diameter workpieces in both light and heavy production settings. The CVD TiCN/Al2O3/TiN coating extends tool life across a range of cutting conditions. This insert is sold individually per package with a minimum order quantity of 10 units.

Key Features

• 0.157-inch cutting width optimized for parting and grooving operations
• Grade 4425 carbide substrate with CVD-applied TiCN/Al2O3/TiN multilayer coating for extended wear resistance
• Neutral lead angle and neutral hand orientation for straight-plunge cutoff applications
• 7-degree relief angle with 0.0118-inch corner radius and CR chipbreaker geometry
• Part of the CoroCut QD series, engineered for stable deep grooving and parting
• ISO code QD-NH-0400-0003-CR 4425 for cross-reference and toolholder matching

Compatibility

Designed for use with SANDVIK COROMANT CoroCut QD series QD-N style toolholders that accept the H insert size code. Verify toolholder designation against the ISO code QD-NH-0400-0003-CR 4425 before installation.

Installation Notes

Insert seating and clamping should be performed by a qualified machinist following the toolholder manufacturer's torque and clamping procedure. Power down and lock out the machine spindle before changing inserts. Inspect the toolholder pocket and clamping mechanism for wear or debris before seating a new insert. Do not exceed the cutting parameters specified in the toolholder system documentation for this insert grade and geometry.