Sandvik Coromant 7860588 Turning Insert Tnmg 16 04 08-PR 4415

Product Description

The SANDVIK COROMANT 7860588 is a solid carbide turning insert with ISO designation TNMG 16 04 08-PR 4415, part of the T-Max P series. It features a triangle insert shape with a neutral hand orientation and a 0-degree relief angle (clearance code N, tolerance code M). The insert is CVD-coated with a TiCN, Al2O3, and TiN multilayer coating stack, designed for consistent wear resistance and thermal protection during turning operations. With a 9.53 mm inscribed circle and a 0.79 mm corner radius, it is suited for medium to finishing passes on a range of workpiece materials. It is held in place by clamp or screw-style toolholders.

This insert is intended for use in external and internal turning applications on CNC lathes and turning centers. The 4415 grade and PR chip breaker geometry target primary workpiece material code K (cast iron) and secondary code P (steel), making it appropriate for general-purpose turning in both job shop and production environments. Machinists and CNC operators select this insert for stable, repeatable performance on medium interrupted or continuous cuts. The T-Max P series is a widely recognized SANDVIK COROMANT platform for indexable turning toolholders.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for extended tool life and heat resistance
• Triangle insert shape (code T) with neutral hand — fits a broad range of T-style toolholders
• 0.79 mm (0.0313 inch) corner radius for a balance of edge strength and surface finish
• 9.53 mm (0.375 inch) inscribed circle, insert thickness 4.76 mm (0.1875 inch)
• Clamp and screw holding method compatibility for secure seating at elevated cutting speeds
• PR chip breaker geometry suited for medium turning and light roughing on steel and cast iron

Compatibility

Designed for use with SANDVIK COROMANT T-Max P series toolholders that accept TNMG-style inserts with clamp or screw holding. ISO code TNMG 16 04 08-PR 4415; manufacturers catalog number TNMG 332-PR 4415.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Power down and de-energize the machine before indexing or replacing inserts. Use the appropriate torque wrench and insert key specified by the toolholder manufacturer when securing clamp or screw-style seats — do not over-tighten. Inspect the insert pocket and seating surface for chips or debris before seating a new insert to ensure proper contact and runout.