Sandvik Coromant 7860483 Turning Insert TCMT21.51-UF 4415

Product Description

The SANDVIK COROMANT 7860483 is a solid carbide turning insert in the CoroTurn 107 series, designed for external and internal turning operations on CNC lathes and turning centers. Identified by ISO code TCMT 11 02 04-UF 4415, this insert features a triangular shape with a 60-degree included angle, a 7-degree relief angle, and a 0.40 mm corner radius. The multilayer CVD coating stack of Al2O3, TiN, and TiCN provides wear resistance and thermal stability during cutting. Machinists and CNC operators in production shops use this insert for consistent, reliable metal removal on steel and cast iron workpieces.

This insert is suited for finish to semi-finish turning of steel and cast iron components in both light and moderate cutting conditions. The UF chip breaker geometry is optimized for light cutting depths and small feeds, making it a practical choice for close-tolerance finishing passes. It fits toolholders and boring bars that accept screw or clamp holding methods compatible with the TCMT insert style. The neutral hand orientation allows use in a range of standard turning applications without handedness restrictions.

Key Features

• Solid carbide substrate with manufacturer grade 4415 for steel and cast iron applications
• CVD-applied multilayer coating: Al2O3, TiN, and TiCN for wear and heat resistance
• UF chip breaker geometry for light finishing cuts and tight tolerances
• Triangle insert shape with 60-degree included angle and 3 usable cutting edges
• 0.40 mm corner radius for finish turning with controlled surface finish
• Neutral hand insert compatible with screw and clamp toolholder styles

Compatibility

Designed as an OEM-style replacement turning insert for CoroTurn 107 series toolholders accepting TCMT-style inserts with a 0.1102-inch hole diameter and screw or clamp holding. Primary workpiece material compatibility is steel (ISO P) and secondary compatibility is cast iron (ISO K).

Installation Notes

This insert is installed by qualified machinists or CNC toolroom technicians. Power down and lock out the machine spindle before changing inserts. Use the correct torque driver and insert screw specified for the toolholder to avoid cracking the carbide substrate or stripping the clamping screw. Inspect the toolholder seat and clamping surfaces for debris or wear before seating the new insert.