Sandvik Coromant 7861013 Turning Insert WNMG432-WMX 4425

Product Description

The SANDVIK COROMANT 7861013 is a WNMG432-WMX 4425 series turning insert designed for external turning operations on CNC and manual lathes. It features an 80-degree diamond insert shape (W) with a 1/2-inch inscribed circle and a 0.0313-inch corner radius. The insert is manufactured from solid carbide and coated via CVD process with Al2O3, TiN, and TiCN layers for extended wear resistance and thermal stability. The 4425 grade is suited for steel and cast iron workpiece materials (ISO P and K classifications). This insert is part of the Sandvik T-Max P series and is installed by machinists and CNC tool-setters in production and job-shop environments.

This insert is intended for turning steel, cast iron, and similar ferrous materials in both continuous and interrupted cut scenarios. The WNMG 08 04 08-WMX geometry is a globally recognized ISO standard size, making it a drop-in fit for a wide range of WNMG-compatible toolholders used in production turning, facing, and profiling operations. The neutral hand orientation allows use in both left- and right-hand toolholder setups. Minimum order quantity is 10 inserts; inserts are packaged individually.

Key Features

• 80-degree diamond insert shape (ISO W) provides a strong cutting edge and versatile approach angles
• CVD coating stack of Al2O3, TiN, and TiCN delivers thermal barrier and crater-wear resistance
• Sandvik 4425 carbide grade rated for ISO P and K workpiece materials including steel and cast iron
• 0.0313-inch corner radius balances surface finish quality with edge strength
• Neutral hand orientation fits both left-hand and right-hand WNMG toolholders
• WMX chip breaker geometry designed for efficient chip control across a range of feeds and depths

Compatibility

Designed for use in WNMG-style clamp and screw-lock toolholders accepting a 1/2-inch inscribed circle, 3/16-inch thick, WNMG 08 04 08 insert seat. Compatible with ISO-standard WNMG 432 toolholder pockets used in CNC turning centers and manual lathes.

Installation Notes

Installation is performed by machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully into the toolholder pocket and secure with the clamp or clamping screw per the toolholder manufacturer torque specification. Inspect the insert seat and shim for damage or debris before seating a new insert, as a contaminated seat will affect cutting geometry and tool life.