Iscar 5569358 CNMG643-M3M IC807 Carbide Turning Insert

Product Description

The ISCAR 5569358 is a CNMG643-M3M indexable turning insert in ISCAR grade IC807, designed for external and internal turning operations on CNC lathes and turning centers. The insert features an 80-degree diamond (rhombic) shape with a negative side clearance and a positive rake geometry, combining rigidity with free-cutting action. The IC807 carbide substrate carries a PVD-applied TiAlN and TiN multilayer coating with ISCAR SumoTec surface treatment, delivering high wear resistance across a range of cutting conditions. The M3M chip breaker geometry supports both roughing and medium machining passes. The insert measures 19.34 mm in length with a 19.05 mm inscribed circle and a 1.2 mm corner radius.

This insert is suited for right-hand turning applications in ISO material groups P (steel), M (stainless steel), K (cast iron), and S (superalloys and special materials). The IC807 grade is characterized by high to moderate wear resistance combined with adequate toughness, making it appropriate for interrupted cuts, scale, and variable stock conditions in production turning environments. Machinists and CNC operators use this insert for finishing and semi-roughing passes where extended tool life and consistent chip control are priorities. The M3M chip breaker handles maximum depths of cut up to 10.00 mm.

Key Features

• IC807 PVD TiAlN and TiN coating with SumoTec surface treatment for improved wear resistance and edge integrity
• M3M chip breaker geometry supports roughing and medium machining operations
• 80-degree diamond insert shape with negative clearance for stable, high-force turning applications
• 1.2 mm corner radius reduces notch wear and supports moderate feed rates
• Maximum depth of cut of 10.00 mm suitable for semi-roughing passes
• Conforms to ISO 13399 standards; ISO code CNMG 643-M3M, ANSI size code 643

Compatibility

Designed for use in CNMG-style indexable turning toolholders with a negative rake seat accepting the 643 insert size, as specified by ISO toolholder designations. Verify toolholder pocket geometry and clamping style before installation.

Installation Notes

Insert indexing and replacement should be performed by a qualified machinist or CNC toolroom technician with the machine fully stopped and in a safe state. Use the appropriate torque wrench and seating tool specified by the toolholder manufacturer when clamping the insert to avoid seat damage. Inspect the toolholder pocket and clamp for wear or debris before seating a new insert. Handle carbide inserts with care to prevent edge chipping prior to use.