Sandvik Coromant 7080712 Turning Insert TCMT221-PM 4335

Product Description

The SANDVIK COROMANT 7080712 is a TCMT-style carbide turning insert designed for precision external turning operations on steel workpieces. Manufactured under the CoroTurn 107 series, it features a triangular insert shape with a 60-degree included angle and a neutral hand orientation. The insert carries a multilayer CVD coating of TiCN, Al2O3, and TiN, which delivers wear resistance and thermal stability during continuous and light interrupted cuts. The manufacturer grade is 4335, optimized for steel applications identified under ISO material code P. The screw-clamped holding method provides secure, repeatable positioning in compatible toolholders. This insert is installed by machinists and CNC turning center operators in production and job shop environments.

The 7080712 is suited for turning steel components in both light finishing and moderate roughing passes. It is used in CNC lathes and turning centers where the CoroTurn 107 toolholder system is employed. The PM chip breaker geometry controls chip flow across a range of feed rates and depths of cut, making this insert practical for medium-duty steel turning tasks. With 3 cutting edges per insert, it offers multiple index positions before replacement, reducing per-edge tooling cost in production settings.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for wear and heat resistance on steel
• PM chip breaker geometry for controlled chip evacuation in steel turning
• 3 cutting edges per insert for extended usable tool life per piece
• 0.0156-inch (1/64-inch) corner radius for finishing and medium-duty passes
• Screw-clamped insert holding method for rigid, repeatable seating
• Neutral hand orientation compatible with standard right-hand and left-hand toolholder setups

Compatibility

Designed for use with CoroTurn 107 series toolholders that accept TCMT-style inserts with a screw clamping method. No additional specific model compatibility data was provided in the product input.

Installation Notes

Turning inserts are indexed and replaced by machinists following machine lockout and spindle stop procedures. Use the correct Torx or hex key specified by the toolholder manufacturer to secure the clamping screw — do not overtighten, as this can fracture the insert. Inspect the toolholder seat and shim for damage before installing a new insert. Follow shop-specific safe work procedures and machine tool manufacturer guidelines when changing inserts on live tooling systems.