Sandvik Coromant 7861005 Turning Insert WNMG432-PR 4425

Product Description

The SANDVIK COROMANT 7861005 is a WNMG432-PR solid carbide turning insert from the T-Max P series, designed for external turning operations on CNC lathes and turning centers. It features a CVD-applied multilayer coating of Al2O3, TiCN, and TiN over a carbide substrate, providing thermal resistance and edge wear protection during interrupted and continuous cuts. The insert carries manufacturer grade 4425, positioning it for steel and cast iron machining at moderate to high cutting speeds. With a neutral hand orientation and six usable cutting edges, this insert is a practical choice for production turning environments where tool economy matters.

This insert is intended for turning applications in steel (ISO P) and cast iron (ISO K) workpieces, covering both roughing and semi-finishing passes depending on feed rate and depth of cut selection. It is used in residential and commercial manufacturing environments wherever T-Max P compatible toolholders are in service. The PR chip breaker geometry is suited for general-purpose turning, particularly on low-to-medium alloy steels. Licensed machinists and CNC operators handling precision turning applications are the primary users of this insert.

Key Features

• CVD multilayer coating: Al2O3, TiCN, and TiN for thermal and abrasion resistance
• Manufacturer grade 4425 optimized for steel and cast iron cutting
• PR chip breaker geometry for general-purpose turning performance
• Six cutting edges per insert for extended tool life per unit cost
• Neutral hand orientation fits standard T-Max P toolholder setups
• Clamp and screw holding method for rigid, repeatable insert indexing

Compatibility

Designed for use in T-Max P series toolholders accepting WNMG insert style with clamp or screw holding. ISO code WNMG 08 04 08-PR 4425 confirms fitment with standard WNMG-compatible turning toolholders.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist with the machine in a powered-off and locked-out state per applicable lockout/tagout procedures. Use the appropriate torx or hex key as specified by the toolholder manufacturer to seat the insert securely before operation. Inspect the insert pocket and clamping components for debris or wear before seating a fresh insert. Do not exceed the toolholder manufacturer's recommended cutting parameters for this insert geometry.