Sandvik Coromant 6428045 Milling Insert R390 Carbide

Product Description

The SANDVIK COROMANT 6428045 is a solid carbide milling insert designed for use in R390 series square-shoulder milling cutters. Carrying the ANSI and ISO designation R390-11 T3 10M-KH 3330, this insert features a parallelogram shape with a positive rake angle of 9 degrees and a 90-degree included angle. The cutting edge geometry is corner-rounded with a 1.00 mm corner radius, and the insert measures 11.00 mm wide and 3.97 mm thick. A CVD-applied multilayer coating of TiCN, Al2O3, and TiN in manufacturer grade 3330 provides wear resistance and thermal stability suited to interrupted and continuous cutting operations in cast iron.

This insert is intended for milling cast iron workpieces in production machining environments. It fits R390 and M-32 cutter bodies and is held in place by a screw. With a maximum depth of cut of 10.00 mm (0.3937 inches), the KH chip breaker geometry is optimized for cast iron applications where controlled chip evacuation and edge security are priorities. The right-hand cutting orientation and single-sided design make setup straightforward for machinists running standard R390 tooling on CNC milling equipment.

Key Features

• Solid carbide substrate with CVD multilayer TiCN, Al2O3, and TiN coating for extended tool life in cast iron
• KH chip breaker geometry designed specifically for cast iron primary workpiece material
• Positive rake angle (9 degrees) reduces cutting forces and heat generation at the edge
• Corner-rounded cutting edge with 1.00 mm corner radius for smooth surface finish and edge stability
• Maximum depth of cut of 10.00 mm suits a wide range of shoulder milling pass depths
• Compatible with R390 and M-32 cutter series for broad toolholder interchangeability

Compatibility

Compatible with M-32 and R390 series milling cutter bodies. Insert size code 11T310 with screw holding method.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before seating or replacing inserts. Use the appropriate Torx or hex key as specified by the cutter body manufacturer to secure the clamping screw — do not overtighten or use impact tools on insert screws. Inspect the pocket seat and clamping screw for damage before installing a fresh insert.