Sandvik Coromant 7859092 Turning Insert CCMT32.52-UR 4415

Product Description

The SANDVIK COROMANT 7859092 is a CCMT-style solid carbide turning insert designed for precision external turning applications. Identified by the manufacturers catalog designation CCMT 3(2.5)2-UR 4415 and ISO code CCMT 09 T3 08-UR 4415, this insert features a CVD-applied multilayer coating of TiCN, Al2O3, and TiN for wear resistance and thermal stability. The 80-degree diamond insert shape (Insert Shape Code C) provides a strong cutting edge geometry suited to general turning. With a 3/8-inch (9.53 mm) inscribed circle and a 0.79 mm (0.0313 inch) corner radius, it is sized for medium turning passes on steel and cast iron. Licensed machinists and CNC turning specialists are the typical installers.

The 7859092 belongs to the CoroTurn 107 series, which is engineered for positive-rake external turning on lathes and turning centers. Primary workpiece material is steel (ISO P), with secondary suitability for cast iron (ISO K). The UR chip breaker geometry is optimized for reliable chip control in these materials. The insert uses a clamp-and-screw holding method and is sized at 3.97 mm thickness (0.1563 inch). It carries a neutral hand designation, making it adaptable to standard right-hand tool holders in the CCMT family.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for high wear resistance and thermal barrier performance
• 80-degree diamond insert shape (Code C) with 7-degree relief angle for stable, strong cutting edges
• UR chip breaker geometry engineered for controlled chip evacuation on steel and cast iron
• 3/8-inch inscribed circle (9.53 mm) with 0.79 mm corner radius for medium-duty turning passes
• 2 cutting edges per insert; clamp-and-screw holding method for secure tool holder engagement
• Neutral hand orientation compatible with standard CCMT right-hand external turning holders

Compatibility

Designed for use in CoroTurn 107 series tool holders that accept CCMT 09 T3 insert size. Primary workpiece materials are steel (ISO P) and cast iron (ISO K). Compatible with standard CCMT clamp-and-screw style external turning tool holders.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Always power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and manufacturer-specified screw for the clamp-and-screw holding system to avoid seat damage or insert cracking. Inspect the insert pocket and seating surface for chips or debris before seating a new insert.