Sandvik Coromant 7860715 Turning Insert SNMG322-PM 4425

Product Description

The SANDVIK COROMANT 7860715 is a solid carbide turning insert in the T-Max P series, designed for external and internal turning operations on CNC lathes and turning centers. It carries the ISO designation SNMG 09 03 08-PM 4425 and features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN for thermal resistance, wear resistance, and surface quality. The square SNMG insert geometry provides 8 usable cutting edges per insert. The PM chip breaker geometry is engineered for productive turning in steel and cast iron at moderate to high cutting depths. Installation is performed by machinists and CNC setup technicians.

This insert is suited for general-purpose turning of steel and cast iron workpieces in both roughing and semi-finishing applications. The grade 4425 CVD coating with PM chip breaker geometry performs across a broad range of cutting conditions in production environments. It is commonly used in automotive, general engineering, and heavy component machining where consistent chip control and long tool life are required.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for high wear resistance and thermal stability
• Square SNMG insert shape with 8 cutting edges for extended insert life per unit
• PM chip breaker geometry optimized for steel and cast iron turning
• Neutral hand orientation compatible with standard right-hand and left-hand toolholders
• 0.79 mm (0.0313 inch) corner radius for balanced strength and surface finish
• Compatible with clamp and screw insert holding methods

Compatibility

Designed for use in SNMG-compatible toolholders that accept a square insert with a 3/8-inch inscribed circle, 1/8-inch insert thickness, and 0.150-inch hole diameter. Primary workpiece material is steel (ISO code P); secondary workpiece material is cast iron (ISO code K).

Installation Notes

Insert seating, clamping, and indexing should be performed by a qualified machinist or CNC technician following the toolholder manufacturer's torque and clamping specifications. Power down and lock out the spindle before indexing or replacing inserts. Inspect the insert pocket and clamping hardware for wear or damage before seating a new insert. Verify chip breaker orientation and cutting-edge selection before resuming operation.