Iscar 5607418 Milling Insert T490 Lnmt 1607PN-R IC5400

Product Description

The ISCAR 5607418 is a solid carbide coated milling insert carrying the manufacturer designation T490 LNMT 1607PN-R IC5400. It belongs to the HELITANG series and is designed for use in indexable milling cutters that require a negative-rake, helical cutting edge geometry. The insert features a butterfly (LNMT) shape with four usable cutting edges, a double-sided configuration, and a TiCN/Al2O3/TiN multilayer coating applied via MTCVD process. With a maximum depth of cut of 0.63 inches (16.00 mm) and a corner radius of 0.0315 inches (1/32 inch), it is suited for demanding face and shoulder milling operations performed by licensed machinists and toolroom technicians.

This insert is intended for milling steel and stainless steel workpieces in both production and job-shop environments. The IC5400 grade with CVD coating classification handles the thermal and abrasion demands common in interrupted cuts and continuous passes on P- and M-category workpiece materials. It is a right-hand insert held in the cutter body by screw clamping, consistent with standard T490-series tooling setups found on CNC vertical and horizontal machining centers.

Key Features

• Butterfly (LNMT) insert shape with four cutting edges for extended tool life per insert
• Double-sided design maximizes the number of usable edges per piece
• MTCVD-applied TiCN/Al2O3/TiN multilayer coating for heat and wear resistance
• Helical cutting edge style reduces cutting forces and vibration during milling
• Negative rake angle and 90-degree included angle for rigid, stable engagement
• PN-R chip breaker geometry optimized for steel and stainless steel applications

Compatibility

Compatible with T490 LNK16 cutter series toolholders. Conforms to ANSI code T490 LNMT 1607PN-R IC5400 and ISO code T490 LNMT 1607PN-R per ISO 13399 standards.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torx or hex key driver specified by the toolholder manufacturer when tightening the clamping screw - do not overtighten, as this can fracture the carbide insert. Inspect the insert pocket and seating surface for chips or debris before seating a new insert.