Sandvik Coromant 7080821 CNMG432-PM 4335 Turning Insert

Product Description

The SANDVIK COROMANT 7080821 is a CNMG-style indexable turning insert in the T-Max P series, designed for precision metal turning on steel workpieces. It carries the manufacturer grade 4335 with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, providing wear resistance and thermal protection under continuous and interrupted cutting conditions. The insert features an 80-degree diamond shape, a neutral hand orientation, a 1/2-inch inscribed circle (0.5000 inches), and a 1/32-inch corner radius (0.0313 inches). It is suited for production turning operations where consistent tool life and surface finish on steel are priorities.

This insert is intended for use in CNC turning centers and manual lathes equipped with compatible CNMG toolholders. It is primarily applied to steel turning applications and is appropriate for both roughing and finishing passes depending on depth of cut and feed rate selection. The PM chip breaker geometry is optimized for medium-duty steel turning. Installation and tool management are typically handled by machinists, CNC operators, and toolroom technicians in metalworking and manufacturing environments.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for extended wear life on steel
• 80-degree diamond insert shape (CNMG style) with neutral hand for versatile turning orientations
• PM chip breaker geometry suited for medium-duty steel turning applications
• 4 usable cutting edges per insert, reducing per-edge tooling cost
• Clamp and pin holding method for secure seating in compatible toolholders
• ISO designation CNMG 12 04 08-PM 4335 for cross-reference with international toolholder systems

Compatibility

Designed for use in CNMG-style toolholders compatible with the T-Max P series. The clamp and pin holding method requires a toolholder configured for that retention style. Primary workpiece material designation is Steel (ISO code P).

Installation Notes

Always power down and lock out the machine before indexing or replacing turning inserts. Use the appropriate torque wrench and manufacturer-recommended seating procedure to secure the clamp without cracking the insert. Inspect the insert pocket and shim for wear or debris before seating a new insert. Insert indexing and toolholder setup should be performed by qualified machinists or CNC toolroom personnel following applicable shop safety procedures.