Iscar 3321183 Cnmg 431-F3S IC804 Carbide Turning Insert

Product Description

The ISCAR 3321183 is a solid carbide turning insert in the CNMG 431-F3S geometry, designed for external and internal turning operations on CNC lathes and turning centers. It carries the IC804 manufacturer grade with an AlTiN finish applied via PVD coating, including ISCAR's proprietary SumoTec surface treatment. The insert features an 80-degree diamond shape (Code C), a 0.40 mm corner radius, and the F3S chip breaker geometry. It is intended for right-hand cutting and belongs to the Isoturn series. This insert is primarily suited for machining ISO material group S workpieces, which includes superalloys and titanium alloys. Installation and tool setting are performed by machinists and CNC tooling technicians.

The 3321183 is used in precision turning applications where controlled chip breaking and wear resistance are required. The F3S chip breaker geometry is suited for finishing and semi-finishing passes at moderate depths of cut, with a maximum depth of cut of 1.50 mm (0.0590 inches). The Isoturn series is a general-purpose turning platform compatible with CNMG-style toolholders following ISO and ANSI insert seating standards. This insert is appropriate for production turning environments in aerospace, defense, and energy sectors where superalloy and titanium workpieces are common.

Key Features

• IC804 grade with AlTiN PVD coating and SumoTec proprietary surface treatment for extended tool life on difficult-to-machine materials
• F3S chip breaker geometry optimized for finishing and semi-finishing passes
• 80-degree diamond insert shape (Code C) with 0.40 mm corner radius for versatile turning profiles
• Maximum depth of cut: 1.50 mm (0.0590 inches)
• Right-hand cutting designation for standard toolholder orientation
• Conforms to ISO 13399 tooling data standards

Compatibility

Designed for use in CNMG-style turning toolholders conforming to ISO insert seating standards. The ISO code for this insert is CNMG 431-F3S. Verify toolholder pocket geometry and clamping style before installation.

Installation Notes

Insert replacement and indexing should be performed by a qualified machinist or CNC tooling technician with the machine spindle stopped and all motion axes at rest. Use a calibrated torque wrench and the toolholder manufacturer's specified clamping screw torque when securing the insert. Inspect the insert pocket and clamping components for wear or debris before seating a new insert. Follow the toolholder manufacturer's indexing procedure to ensure proper insert orientation and seating depth.