Iscar 5507561 Turning Insert SNMG643GN IC9250 Carbide

Product Description

The ISCAR 5507561 is a solid carbide turning insert in the SNMG643GN geometry, part of the Isoturn series. It carries a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which provides wear resistance and thermal stability during continuous and interrupted turning operations. The insert features a 90-degree square shape with a 0.75 inch inscribed circle, a 0.25 inch thickness, and a 3/64 inch (0.0469 inch) corner radius. Clearance code N and tolerance code M align with standard SNMG toolholder pockets. The GN chip breaker geometry promotes controlled chip evacuation in medium to finishing cuts on steel and stainless steel workpieces.

This insert is intended for turning applications on stainless steel and steel workpieces, corresponding to ISO material groups M and P. It suits medium turning and finishing passes on CNC lathes and manual turning centers in job shop, production machining, and maintenance machining environments. The maximum depth of cut is 7.00 mm (0.2756 inches), making it well suited for light to medium stock removal. It is installed and managed by machinists and CNC operators working with indexable toolholding systems.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for extended tool life on steel and stainless steel
• GN chip breaker geometry for controlled chip flow in medium to finishing cuts
• 90-degree square insert shape with 0.75 inch inscribed circle fits standard SNMG toolholders
• Corner radius of 3/64 inch (0.0469 inch) balances surface finish and edge strength
• Clamp and pin holding method compatible with common indexable turning tool bodies
• Conforms to ISO 13399 for tooling data standardization

Compatibility

Designed as an OEM-style indexable replacement insert for SNMG-style toolholders accepting a 3/4 inch inscribed circle, 1/4 inch thick, 90-degree square insert with clearance code N and tolerance code M. Compatible with clamp and pin holding methods per standard SNMG pocket geometry.

Installation Notes

Installation is performed by a qualified machinist or CNC operator. Power down and lock out the machine before indexing or replacing inserts. Use the correct torque wrench and manufacturer-specified clamping hardware when seating the insert to avoid micro-fractures at the cutting edge. Do not use damaged or out-of-spec toolholders, as improper seating can cause premature insert failure or workpiece damage.