Sandvik Coromant 7080859 Turning Insert CNMG433-PR 4335

Product Description

The SANDVIK COROMANT 7080859 is a CNMG-style indexable turning insert designed for precision metal cutting in CNC lathe and turning center applications. Manufactured from solid carbide and coated via CVD with a TiCN, Al2O3, and TiN multilayer coating system, this insert delivers wear resistance and thermal stability during steel turning operations. It features an 80-degree diamond insert shape, a 0.5000-inch inscribed circle, a 3/64-inch (0.0469-inch) corner radius, and a neutral hand orientation. With four usable cutting edges per insert, it is suited for production turning environments where consistent tool life and surface finish are priorities.

This insert is engineered for primary use on steel workpieces (ISO material group P) and fits into the T-Max P series toolholding system. It is appropriate for both roughing and semi-finishing passes on CNC lathes in residential shop, job shop, and industrial manufacturing settings. The CNMG form factor with clamp and pin holding method ensures rigid seating in compatible toolholders. The PR chip breaker geometry supports effective chip control across a range of steel grades and cutting parameters.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for extended tool life on steel
• 80-degree diamond insert shape with neutral hand orientation
• Four cutting edges per insert for cost-effective tooling usage
• 3/64-inch (0.0469-inch) corner radius for controlled surface finish
• PR chip breaker geometry optimized for steel turning applications
• Clamp and pin holding method for secure, repeatable insert indexing

Compatibility

Designed for use in T-Max P series toolholders accepting CNMG 12 04 12 inserts with clamp and pin holding. ISO code CNMG 12 04 12-PR 4335. Compatible toolholders require a 0.2030-inch hole diameter for pin retention.

Installation Notes

Indexable turning inserts are installed and replaced by licensed machinists or qualified toolroom personnel. Power down and lock out the CNC lathe or turning center completely before indexing or replacing inserts. Use the appropriate torque wrench and manufacturer-specified clamping hardware when seating the insert to ensure proper contact and prevent edge chipping. Inspect the toolholder pocket and seating surface for wear or debris before installing a fresh insert.