Sandvik Coromant 7860882 Turning Insert Scmt 4425

Product Description

The SANDVIK COROMANT 7860882 is a square-shaped indexable turning insert designed for external turning operations on CNC lathes and turning centers. Manufactured from solid carbide and finished with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, this insert carries Sandvik grade 4425 and is part of the CoroTurn 107 series. It features a 3/8-inch (9.53 mm) inscribed circle, a 0.79 mm corner radius, and four available cutting edges, making it a cost-effective option for production turning in ferrous applications. The neutral hand orientation suits standard right-hand turning setups.

This insert is intended for turning operations on steel as its primary workpiece material (ISO material code P) and cast iron as a secondary application (ISO material code K). It is suited for use in light-to-medium roughing and finishing passes on components commonly machined in job shops, production facilities, and maintenance environments. The CoroTurn 107 series is designed for use with corresponding Sandvik CoroTurn 107 toolholders that accept SCMT-style inserts with clamp and screw holding methods.

Key Features

• CVD multilayer coating (TiCN, Al2O3, TiN) for wear resistance and thermal stability on steel and cast iron
• Grade 4425 carbide substrate optimized for P- and K-category workpiece materials
• Four usable cutting edges per insert for extended tool life per unit
• Square insert geometry (SCMT style) with 7-degree relief angle and neutral hand
• UR chip breaker geometry for controlled chip formation during turning
• No wiper edge — standard corner geometry with 0.79 mm corner radius

Compatibility

Designed for use with Sandvik CoroTurn 107 toolholders accepting SCMT-style inserts. ISO code SCMT 09 T3 08-UR 4425. Insert holding method is clamp and screw. Compatible toolholder selection should be confirmed against Sandvik CoroTurn 107 series specifications for SCMT insert seats.

Installation Notes

Installation is performed by qualified CNC machinists or tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and Sandvik-specified clamping screws for CoroTurn 107 seats to avoid seat damage or insert fracture. Handle carbide inserts with care — edges are sharp and the substrate is brittle under lateral impact.