Iscar 5598658 Ccgt 3-1-AS IC520 Turning Insert Diamond

Product Description

The ISCAR 5598658 is a solid carbide turning insert in the CCGT 3-1-AS geometry, designed for precision external and internal turning operations on CNC lathes and turning centers. Manufactured under the Isoturn series, this insert carries the IC520 grade with a PVD-applied TiCN plus TiN dual-layer coating for wear resistance and edge stability. The 80-degree diamond shape provides a strong cutting geometry with a positive rake angle and a 7-degree relief angle, making it well suited for finishing and light interrupted cuts. Screw-type insert holding is used for secure, repeatable indexing. This insert is specified and installed by CNC machinists and toolroom technicians.

The 5598658 is rated for universal primary workpiece materials, with ISO material codes M, N, and S, covering stainless steel, non-ferrous alloys, and heat-resistant superalloys. The AS chip breaker geometry targets finishing-to-semi-finish applications where controlled chip evacuation is critical. The Isoturn series is a standard product line for external profile, facing, and contour turning on modern CNC turning equipment. The 1/64 inch corner radius minimizes surface marking on finish passes while maintaining edge strength at light feed rates.

Key Features

• IC520 grade with PVD TiCN and TiN coating for extended tool life in stainless and superalloy cuts
• 80-degree diamond (CCGT) insert shape with positive rake for reduced cutting forces
• AS chip breaker optimized for finishing and semi-finishing operations
• Screw-type clamping for fast, repeatable indexing without toolholder removal
• 3/8 inch inscribed circle with 1/64 inch corner radius for precision finish passes
• Conforms to ISO 13399 tooling data standards for compatibility with CAM and tool management systems

Compatibility

Designed as an OEM-style replacement turning insert for CCGT-style screw-on toolholders accepting a 3/8 inch inscribed circle, 5/32 inch thick diamond insert per Isoturn series specifications. Specific toolholder compatibility was not stated in available product data; verify holder designation against ISCAR Isoturn series toolholder catalogs before ordering.

Installation Notes

Installation is performed by a qualified CNC machinist or toolroom technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque screwdriver or Torx key specified for the toolholder to avoid cracking the carbide insert seat or stripping the clamping screw. Inspect the insert pocket and seating surface for chips or debris before seating a new insert, as an uneven seat will cause premature edge failure.