Iscar 6400388 Grooving Insert GIM328A IC20 Solid Carbide

Product Description

The ISCAR 6400388 is a solid carbide grooving insert designed for precision external grooving operations on CNC lathes and turning centers. Carrying the GIM328A insert style and IC20 uncoated carbide grade, this single-end insert delivers a cutting width of 0.126 inches (3.20 mm) with a corner radius of 0.0087 inches (0.22 mm). The positive rake geometry and 7-degree rake angle reduce cutting forces and improve chip flow across a wide range of workpiece materials. It is installed by machining professionals and CNC operators in production and job-shop environments.

This insert belongs to the Cut-Grip series and is configured for right-hand operation. The IC20 uncoated solid carbide grade is suited for universal applications covering materials in ISO material groups H, K, M, N, and S, making it adaptable across steel, stainless, cast iron, non-ferrous, and super-alloy workpieces. The chip breaker designation A and an 8-degree lead angle support controlled chip formation during grooving passes. This insert is a single-use, single-end design packaged individually.

Key Features

• Cutting width of 0.126 inches (3.20 mm) for precise groove sizing
• IC20 uncoated solid carbide grade rated for universal workpiece material compatibility
• Positive rake angle (7 degrees) reduces cutting forces and heat generation
• Corner radius of 0.0087 inches (0.22 mm) for controlled edge geometry
• Cut-Grip series clamping system uses clamp and screw holding for secure seating
• Conforms to ISO 13399 insert identification standards

Compatibility

Designed for use in Cut-Grip series toolholders accepting GIM-style inserts with size code 328. Compatible with workpieces in ISO material groups H, K, M, N, and S. The MSC/Manufacturer reference number for this insert is GIM 3.2-8RA.

Installation Notes

Installation is performed by a qualified CNC machinist or toolroom technician. Power down and lock out the machine spindle before seating or removing inserts. Ensure the insert pocket and clamping surfaces are clean and free of chips before installation. Verify clamp torque and screw engagement per the toolholder manufacturer specifications before resuming cuts.