Sandvik Coromant 7860474 WNMG433-WMX Turning Insert

Product Description

The SANDVIK COROMANT 7860474 is a WNMG433-WMX 4415 grade solid carbide turning insert designed for external and internal turning operations on CNC lathes and turning centers. Part of the T-Max P series, this insert features a trigon (80-degree) shape with a neutral hand orientation and a 0.0469 inch corner radius. The 4415 grade substrate is CVD-coated with a multilayer Al2O3, TiCN, and TiN stack, optimized for steel and cast iron machining. With 6 usable cutting edges per insert, it delivers consistent tool life in medium to finish turning passes where dimensional accuracy and surface finish are priorities.

This insert is engineered primarily for turning steel (ISO P workpiece material) and secondarily for cast iron (ISO K workpiece material). The WMX chip breaker geometry is suited for medium finishing cuts in both continuous and light interrupted cuts. Typical applications include precision shaft turning, bearing journal finishing, and general component turning on CNC lathes in production and job-shop environments. Licensed machinists and CNC operators working to tight tolerances will find the 0.5 inch inscribed circle and 3/16 inch thickness appropriate for standard WNMG toolholders across a range of cutting conditions.

Key Features

• T-Max P series WMX chip breaker geometry optimized for medium finishing on steel and cast iron
• CVD multilayer coating: Al2O3, TiCN, and TiN for thermal resistance and wear reduction
• 4415 carbide grade balances toughness and hardness for consistent edge life in ISO P and K materials
• Trigon insert shape with 80-degree included angle provides 6 cutting edges per insert
• Neutral hand orientation fits standard WNMG right- or left-hand toolholders
• Clamp and screw holding method compatible with standard WNMG-style toolholder pockets

Compatibility

Designed for use in WNMG-style turning toolholders that accept a 0.5 inch inscribed circle insert with a 3/16 inch thickness and clamp or screw insert retention. ISO code WNMG 08 04 12-WMX 4415. Industry standard number WNMG 08 04 12-WMX 4415.

Installation Notes

Installation is performed by a qualified CNC machinist or toolroom technician. Power down and lock out the machine spindle before indexing or replacing inserts. Ensure the toolholder pocket and clamp seat are clean and free of chips before seating the insert, as contamination under the insert can cause premature edge failure or dimensional drift. Follow the toolholder manufacturer torque specifications for the clamping screw — do not overtighten, as this can fracture carbide inserts.