Sandvik Coromant 7080866 Turning Insert CNMG643-PR 4335

Product Description

The SANDVIK COROMANT 7080866 is a CNMG-style indexable turning insert designed for general turning operations on steel workpieces. It carries the manufacturer grade 4335 and features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, which provides wear resistance and thermal stability during continuous and interrupted cuts. The insert has a 3/4 inch inscribed circle (IC), a 1/4 inch thickness, and a 3/64 inch corner radius (0.0469 inches). With four cutting edges and a neutral hand orientation, it delivers consistent tool life in production turning environments. Licensed machinists and CNC lathe operators are the primary installers of this insert type.

This insert is suited for external and internal turning of steel components in both light finishing and medium roughing passes. The PR chip breaker geometry is optimized for steel cutting, promoting reliable chip control across a range of feed rates. It fits into CNMG-compatible toolholders with clamp and pin holding methods. Typical applications include shaft turning, facing, and profiling on CNC lathes in job shop and production floor environments. The ISO code for this insert is CNMG 19 06 12-PR 4335.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for extended wear resistance on steel
• PR chip breaker geometry optimized for steel turning applications
• 80-degree diamond insert shape (CNMG) with neutral hand orientation
• Four usable cutting edges per insert for reduced tooling cost per edge
• Clamp and pin holding method for secure seating in compatible toolholders
• Part of the SANDVIK COROMANT T-Max P series for steel turning

Compatibility

Designed for use in CNMG-style indexable toolholders that accept clamp and pin insert retention with a clearance code of N and tolerance code of M. Intended for primary use on steel workpieces (ISO material group P).

Installation Notes

Indexable turning inserts are installed and indexed by qualified machinists or CNC tooling technicians following the toolholder manufacturer's clamping torque and seating procedures. Power down and lock out the machine spindle before changing or indexing inserts. Inspect the toolholder pocket for debris or damage before seating a new insert. Do not force the insert into the pocket; improper seating can cause insert fracture or workpiece damage.