Sandvik Coromant 6428082 Milling Insert Solid Carbide

Product Description

The SANDVIK COROMANT 6428082 is a solid carbide milling insert designed for high-performance face and shoulder milling operations. Built to the N331.1A insert style, this single-sided, neutral-hand insert features a CVD-applied tri-layer coating of TiCN, Al2O3, and TiN under the manufacturer grade designation 3330. The rectangular insert measures 9.5 mm wide and 4.45 mm thick, with a corner radius of 0.80 mm and a positive rake geometry that promotes clean chip flow and reduced cutting forces. It seats via screw clamping and delivers up to 7.70 mm maximum depth of cut per pass.

This insert is intended for milling cast iron workpieces in both roughing and finishing applications. The KM chip breaker geometry is matched to cast iron cutting characteristics, helping manage the short, brittle chips typical of that material. It is well suited for production environments where consistent edge life and dimensional repeatability across multiple cutting edges are required. The insert carries four usable cutting edges, reducing per-edge tooling cost on high-volume runs. Licensed machinists, tool-and-die professionals, and CNC setup technicians are the primary installers of this insert type.

Key Features

• Solid carbide substrate with CVD TiCN, Al2O3, and TiN tri-layer coating for cast iron performance
• Four cutting edges per insert for extended usable life
• KM chip breaker geometry optimized for cast iron chip control
• Positive rake angle reduces cutting forces and tool pressure
• Maximum depth of cut of 7.70 mm (0.3031 inches)
• Screw-clamp insert holding method for secure, repeatable seating
• Compatible with L331.52C cutter series per manufacturer data

Compatibility

Designed for use with the SANDVIK COROMANT L331.52C cutter series. Insert style is N331.1A with ANSI and ISO code N331.1A-08 45 08M-KM3330. Size code 084508. Confirm cutter body and pocket geometry match before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Use the correct torx or hex key specified for the cutter body to seat the screw clamp to manufacturer torque requirements. Inspect the insert pocket and seating surfaces for chips or debris before installing a new insert, as contamination will affect runout and edge life.