Sandvik Coromant 6427385 Cutoff Insert Corocut Qd 3mm

Product Description

The SANDVIK COROMANT 6427385 is a solid carbide cutoff insert in the CoroCut QD series, designed for parting and grooving operations on CNC lathes and turning centers. The insert features a 3.00 mm (0.1181 inches) cutting width and a neutral lead angle, making it suitable for straight-in cutoff work where balanced cutting forces are required. The CM chipbreaker geometry is optimized for chip control in a range of workpiece materials. A TiAlN and AlCr2O3 PVD coating provides thermal resistance and extended edge life. This insert is installed by machinists and toolroom technicians performing precision parting, grooving, and profiling operations.

The 6427385 is intended for use in CoroCut QD toolholders accepting a G-size insert seat. It is suited for both roughing and finishing cutoff passes in light to medium-duty turning applications. The 0.20 mm corner radius and 7-degree relief angle support clean, accurate cuts on ferrous and non-ferrous workpiece materials. This insert is commonly found in production shop environments running medium-volume turning cycles where consistent chip evacuation and repeatable tool life are priorities.

Key Features

• Solid carbide construction with grade 1145 substrate for wear resistance
• PVD-applied TiAlN and AlCr2O3 coating for thermal protection and extended tool life
• 3.00 mm cutting width (0.1181 inches) with neutral lead angle for balanced radial cutting forces
• CM chipbreaker geometry for reliable chip control across a range of materials
• 0.20 mm corner radius and 7-degree relief angle for precise, clean parting cuts
• G-size insert seat with clamp holding method for secure, repeatable positioning

Compatibility

Designed for use in CoroCut QD series toolholders with a G-size insert seat. Catalog reference number QD-NG-0300-0002-CM 1145 can be used to confirm holder and insert compatibility.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the machine spindle is fully stopped and all energy is locked out before indexing or replacing inserts. Use the correct clamping torque specified by the toolholder manufacturer for the QD clamping system. Inspect the insert seat and clamping screw for debris or damage before seating a new insert to ensure proper contact and cutting edge alignment.