Iscar 5550540 WNMG432WG IC5005 Carbide Turning Insert

Product Description

The ISCAR 5550540 is a WNMG432WG-style solid carbide turning insert in the IC5005 manufacturer grade, designed for precision turning operations on CNC lathes and manual turning centers. The insert features a CVD-applied TiCN/Al2O3/TiN multilayer coating that provides wear resistance and thermal stability during continuous and interrupted cuts. With an 80-degree trigon shape, a 0.5000-inch inscribed circle, and a 0.0313-inch corner radius, this insert is suited for finishing and semi-finishing passes. The WG chip breaker geometry promotes controlled chip formation. Machinists and toolroom operators install this insert as part of an Isoturn toolholding system.

This insert is intended for use on turning centers running cast iron, hardened steels, and steel workpiece materials, corresponding to ISO workpiece material codes H, K, and P. The WNMG432WG geometry is a standard industry configuration and mounts using clamp and pin holding methods, making it compatible with a wide range of WNMG-style toolholders. Typical applications include external diameter turning, facing, and contouring operations where a trigon insert profile provides adequate clearance and edge strength. Maximum depth of cut is 3.50 mm (0.1378 inches).

Key Features

• CVD-applied TiCN/Al2O3/TiN multilayer coating for elevated wear and heat resistance
• IC5005 grade optimized for cast iron and steel turning at moderate to high cutting speeds
• WG chip breaker geometry for controlled chip evacuation during finishing passes
• 80-degree trigon (W) insert shape with 0-degree relief angle (clearance code N, tolerance code M)
• Wiper edge geometry for improved surface finish at standard feed rates
• Clamp and pin holding method for secure seating in Isoturn-compatible toolholders

Compatibility

Designed for use with WNMG-style toolholders that accept clamp and pin insert holding, within the ISCAR Isoturn series. Compatible with toolholders dimensioned for a 0.5000-inch inscribed circle WNMG insert. Suitable for ISO workpiece material codes H, K, and P.

Installation Notes

This insert is installed by a machinist or toolroom technician. Before changing inserts, disengage the spindle and confirm the machine is in a safe, non-rotating state. Use the appropriate torx or clamp screw driver to release the clamp and pin holding mechanism without damaging the insert seat. Inspect the toolholder pocket for wear or debris before seating the new insert, and verify the insert is fully seated before resuming cutting operations.