Iscar 5507759 CNMG643GN IC8350 Turning Insert Solid Carbide

Product Description

The ISCAR 5507759 is a CNMG643GN-geometry turning insert manufactured from solid carbide and finished with a multilayer CVD coating of TiCN, Al2O3, and TiN. The IC8350 grade is engineered for demanding metal-cutting operations where wear resistance and thermal stability are critical. The insert measures 19.3 mm (0.76 inches) in length with a 3/4-inch inscribed circle and a 3/64-inch (0.0469-inch) corner radius. The 80-degree diamond shape and GN chip breaker geometry work together to control chip flow and reduce cutting forces. Licensed machinists and CNC turning specialists install this insert as part of the Isoturn series tooling system.

This insert is suited for turning operations on stainless steel and steel workpieces in both production and job-shop environments. The GN chip breaker is designed to handle a range of feed rates and depths, with a maximum depth of cut of 7.98 mm (0.314 inches). It is held in place using a clamp or pin clamping method and fits CNMG-style toolholders with the appropriate seat geometry. The Isoturn series targets consistent, repeatable performance in medium to finishing turning passes on ferrous materials.

Key Features

• Solid carbide substrate with IC8350 grade for high wear resistance in steel and stainless steel cutting
• Multilayer CVD coating: TiCN base, Al2O3 thermal barrier, and TiN outer layer for extended tool life
• GN chip breaker geometry designed for effective chip control across a range of feed and depth parameters
• 80-degree diamond insert shape (CNMG) with 0-degree relief angle for rigid, stable cutting edge support
• Maximum depth of cut of 7.98 mm (0.314 inches) for medium turning applications
• Compatible with clamp and pin holding methods for secure seating in standard CNMG toolholders
• Manufactured to ISO 13399 standards for consistent insert geometry and dimensional accuracy

Compatibility

Designed for use with CNMG-style toolholders accepting a 3/4-inch inscribed circle insert. Primary workpiece material codes are M (stainless steel) and P (steel) per ISO classification. Part of the ISCAR Isoturn series.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine before seating or replacing inserts. Ensure the toolholder pocket and clamping hardware are clean and free of chips before seating the insert. Follow the toolholder manufacturer's clamping torque specifications and verify insert seating before resuming cutting operations.