Iscar 6404320 Grooving Insert IC8250 0.25 in Cut Width

Product Description

The ISCAR 6404320 is a solid carbide grooving insert from the Cut-Grip series, designed for precision external grooving operations on CNC lathes and turning centers. Identified by grade IC8250 with a CVD-applied Al2O3 coating, this insert delivers thermal resistance and wear performance suited to interrupted and continuous grooving cuts. It carries a 6.35 mm (0.25 inches) cutting width and a maximum depth of cut of 10.64 mm (0.419 inches). The positive rake angle of 7 degrees and P chip breaker geometry work together to control chip evacuation in demanding turning applications. Machinists and CNC operators in production and job-shop environments install this insert type.

This insert is intended for grooving stainless steel and steel workpieces, corresponding to ISO material groups M and P. It fits applications where consistent groove width, controlled chip flow, and reliable tool life are required across moderate to deep grooving depths ranging from 10.00 mm to 20.00 mm (0.300 inches to 1.000 inches). The self-grip holding method locks the insert securely in compatible Cut-Grip toolholders without additional clamping hardware. It is suited for both production runs and precision finishing passes where groove geometry must be held to close tolerance.

Key Features

• IC8250 grade CVD Al2O3 coating for thermal barrier and extended wear resistance in steel and stainless steel grooving
• 6.35 mm (0.25 inches) cutting width with a corner radius of 3.18 mm (1/8 inches) for consistent groove profile
• Maximum depth of cut of 10.64 mm (0.419 inches) within a working range of 10.00 mm to 20.00 mm
• Positive rake angle of 7 degrees with P chip breaker geometry for controlled chip formation
• Self-grip insert holding method eliminates the need for separate clamping screws
• Neutral hand orientation allows use in standard straight-grooving setups
• Conforms to ISO 13399 tooling data standards for compatibility with CAM and tool management systems

Compatibility

Designed for use in ISCAR Cut-Grip series toolholders that accept GIP-style inserts with size code 635E318. ISO catalog designation is GIP 6.35E-3.18. Verify toolholder pocket geometry and insert seat dimensions before installation.

Installation Notes

This insert is installed and replaced by a qualified machinist or CNC toolroom technician. Power down and lock out the machine spindle before seating or removing any insert. Ensure the toolholder pocket is clean and free of chips or debris before installing the insert, as contamination can affect seating and cause premature edge failure. Do not exceed the maximum depth of cut rating for the insert grade and workpiece material combination.