Sandvik Coromant 7859074 Turning Insert DNMX442-WF 4415

Product Description

The SANDVIK COROMANT 7859074 is a solid carbide turning insert designed for precision metal cutting in CNC lathe and turning center applications. Carrying the DNMX442-WF 4415 designation, this insert features a 55-degree diamond shape with a neutral hand orientation and a 0.0313-inch (0.79 mm) corner radius. It is produced using a CVD coating process, with a multilayer TiCN, Al2O3, and TiN coating stack that supports cutting in steel and cast iron. The WF chip breaker geometry promotes controlled chip evacuation during finishing and semi-finishing passes. This insert belongs to the T-Max P series and is installed by machinists and CNC operators in production turning environments.

This insert is suited for turning operations on steel (ISO material code P) and cast iron (ISO material code K) workpieces in both production and job-shop settings. The wiper edge geometry allows for improved surface finish at higher feed rates compared to standard insert geometries. Typical applications include external and internal diameter turning on CNC lathes where consistent tool life and surface quality are priorities. ISO code DNMX 15 06 08-WF 4415 and manufacturer catalog number DNMX 442-WF 4415 identify this insert within the T-Max P tooling system.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for wear resistance on steel and cast iron
• 55-degree diamond insert shape (shape code D) for versatile turning geometry
• Wiper edge design supports improved surface finish at increased feed rates
• Neutral hand orientation for flexible toolholder compatibility
• 4 cutting edges per insert for extended tool economy
• Clamp and screw holding method compatible with standard DNMX-style toolholders

Compatibility

Designed for use in T-Max P series toolholders accepting DNMX-style inserts. Suitable for primary workpiece materials including steel (ISO code P) and cast iron (ISO code K). ISO code DNMX 15 06 08-WF 4415 applies for cross-reference within compatible tooling systems.

Installation Notes

Installation is performed by qualified machinists following standard CNC toolholder procedures. Power down and lock out the machine spindle before seating or replacing inserts. Use the appropriate torx or hex key to the toolholder manufacturer's specified clamping method when securing clamp or screw-style seats. Inspect the insert pocket and clamping components for wear or debris before seating a new insert to ensure proper seating and edge engagement.