Iscar 5504405 TPGX730 IC20N Cermet Boring Insert

Product Description

The ISCAR 5504405 is a TPGX730 IC20N cermet boring insert designed for precision internal turning and boring operations on CNC and manual lathes. This uncoated cermet insert features a 60-degree triangular shape with an 11-degree relief angle and a positive rake geometry, making it well-suited for achieving tight tolerances and fine surface finishes at high cutting speeds. The inscribed circle measures 7/32 inches (0.2189 inches), thickness is 3/32 inches (0.0937 inches), and the corner radius is 0.0079 inches. It is part of the ISCAR Isoturn series and is installed by machinists and CNC tooling technicians in production and job-shop environments.

This insert is intended for machining stainless steel and steel workpieces in boring and internal turning applications where consistent dimensional accuracy is required. The left-hand orientation suits specific toolholder configurations used in both light and moderate material removal passes. The IC20N cermet grade is rated for material groups P and M per ISO classification, covering carbon steels and austenitic stainless steels. Typical applications include finish boring of bores, sleeves, and close-tolerance internal features in production machining environments.

Key Features

• TPGX style insert with 60-degree triangular shape and positive rake for reduced cutting forces
• IC20N cermet grade — uncoated, suited for ISO P and M workpiece materials (steel and stainless steel)
• 11-degree relief angle provides clearance and reduces flank wear in finish boring passes
• Corner radius of 0.0079 inches for fine surface finish and edge sharpness retention
• Left-hand insert orientation for compatible Isoturn toolholder configurations
• Maximum depth of cut of 0.0790 inches suitable for finish and semi-finish operations

Compatibility

Designed for use in ISCAR Isoturn series toolholders that accept TPGX730 left-hand inserts. Confirm toolholder seat geometry, insert hand orientation, and clamping style before installation. No additional specific compatible model numbers were provided in the product data.

Installation Notes

Insert installation and replacement should be performed by a qualified machinist or CNC tooling technician with the machine fully powered down and the spindle locked. Use the appropriate torque wrench and insert screw specified by the toolholder manufacturer — do not overtighten clamping screws, as cermet substrates are brittle and susceptible to fracture under clamping stress. Inspect the toolholder seat for chips or debris before seating the insert. Verify insert hand orientation and rake direction against the toolholder specification before resuming cuts.