Iscar 5504408 TPGX731 IC20N Cermet Boring Insert

Product Description

The ISCAR 5504408 is a cermet uncoated boring insert designed for precision internal turning and boring operations on CNC and manual lathes. Manufactured to the TPGX731 insert style, it features a 60-degree triangular shape with a positive rake geometry that reduces cutting forces and promotes clean chip flow. The insert carries a manufacturer grade of IC20N, an uncoated cermet grade suited for finishing and semi-finishing cuts where tight tolerances and excellent surface finish are required. At 0.0937 inches thick with a 7/32-inch inscribed circle, this insert is sized for light to medium boring work and is installed by machinists and toolroom technicians working in production or job-shop environments.

This insert is intended for use on stainless steel and steel workpieces, corresponding to ISO material codes M and P. It is part of the ISCAR Isoturn series, engineered for consistent performance in internal diameter boring and turning applications. The left-hand insert hand designation determines proper orientation in the toolholder. Maximum depth of cut is 0.0980 inches, making this insert best suited for finishing passes and tight-tolerance bores rather than heavy stock removal.

Key Features

• IC20N cermet grade, uncoated, optimized for finishing and semi-finishing on steel and stainless steel
• 60-degree triangular insert shape (TPGX style) with positive rake for reduced cutting forces
• Left-hand insert orientation for correct toolholder seating
• 1/64-inch corner radius (0.0157 inches) for tight-tolerance surface finish requirements
• Maximum depth of cut of 0.0980 inches suits light finishing and bore sizing passes
• Conforms to ISO 13399 standard for insert identification and data exchange

Compatibility

Designed as an OEM-style replacement insert for TPGX731 left-hand boring toolholders within the ISCAR Isoturn series; confirm toolholder pocket geometry and insert hand before ordering.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before seating or removing the insert. Secure the insert in the toolholder using the manufacturer-specified clamping screw and torquing method per the toolholder documentation. Inspect the insert seat and clamp for chips or debris before installation to ensure proper seating and avoid insert rocking during the cut.