Iscar 5606105 T490 Lnmt 0804PNR IC830 Milling Insert

Product Description

The ISCAR 5606105 is a solid carbide milling insert carrying the ANSI designation T490 LNMT 0804PNR IC830. Designed for use in helical-edge face and shoulder milling cutters, this insert features a butterfly (LNMT) shape with a negative rake geometry and a 90-degree included angle. It is double-sided, providing 4 usable cutting edges per insert. The IC830 grade is finished with an AlTiN plus TiN PVD coating classified under ISCAR Sumotec PVD, making it well-suited for demanding cuts in steel, stainless steel, and superalloys including titanium. The insert is held in the cutter body by a screw and is installed by machinists and tooling technicians on CNC milling equipment.

This insert is intended for milling applications in steel, stainless steel, superalloys, and titanium workpieces in both production and job-shop environments. The helical cutting edge style reduces cutting forces and aids chip evacuation, which is especially valuable in interrupted cuts and high-feed operations on difficult-to-machine materials. The PNR chip breaker geometry supports stable cutting across a range of depths and feed rates up to a maximum depth of cut of 0.3150 inches (8.00 mm). Right-hand cutting orientation is standard for this insert.

Key Features

• Double-sided LNMT butterfly insert with 4 cutting edges for extended tool life per insert
• IC830 grade with AlTiN plus TiN Sumotec PVD coating for high wear resistance in steel and superalloys
• Helical cutting edge style reduces cutting forces and improves chip flow
• PNR chip breaker optimized for steel, stainless steel, and titanium applications
• Negative rake, 0-degree relief angle for strong cutting edge and screw-lock retention
• Compliant with ANSI and ISO 13399 insert standards

Compatibility

This insert is compatible with the ISCAR T490 LNK08 cutter series as specified by the manufacturer. It is sized for insert size code 0804 toolholders accepting an inscribed circle of approximately 0.1670 inches and a thickness in the range of 0.2500 to 0.3500 inches.

Installation Notes

This insert is installed and replaced by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before seating or removing inserts. Use the correct torx or hex key as specified by the cutter body manufacturer when tightening the retaining screw — do not overtighten. Inspect the insert pocket and seating surface for chips or debris before installing a new insert to ensure proper seating and edge alignment.