Sandvik Coromant 6770742 Indexable Drill Insert Carbide

Product Description

The SANDVIK COROMANT 6770742 is a solid carbide indexable drill insert engineered for use in 880-series indexable drilling systems. It features a square insert shape with a GM chipbreaker geometry and a TiAlN2 PVD coating for extended tool life in demanding materials. The inscribed circle measures 10.65 mm (0.4193 inches), insert thickness is 0.1378 inches, and the corner radius is 0.60 mm (0.0236 inches). The 4344 manufacturer grade designates the substrate and coating combination suited for high-speed drilling applications across a range of workpiece materials. Right-hand cutting direction. Installed and replaced by CNC machinists and tooling technicians in production machining environments.

This insert is intended for use in SANDVIK COROMANT 880-series indexable drill bodies requiring square inserts with a 4.00 mm mounting hole diameter. Typical applications include through-hole and blind-hole drilling in steel, cast iron, and similar ferrous materials in both job-shop and high-volume production settings. The GM chipbreaker promotes controlled chip formation and evacuation, making this insert well-suited for automated machining centers where chip management is critical to uninterrupted operation.

Key Features

• Solid carbide substrate with TiAlN2 PVD coating for heat resistance and wear life
• GM chipbreaker geometry supports reliable chip control in drilling operations
• Square insert shape with 0.60 mm corner radius reduces edge chipping on entry and exit
• Right-hand cutting direction; insert size designation 060406
• Mounting hole diameter of 4.00 mm for positive seating in compatible drill bodies
• Insert style 880 for use in SANDVIK COROMANT 880-series drill platforms

Compatibility

Designed for use in SANDVIK COROMANT 880-series indexable drill bodies that accept square inserts with insert size 060406 and a 4.00 mm hole diameter. No additional compatible model numbers were specified in the product data.

Installation Notes

Insert replacement should be performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before removing or seating inserts. Use the appropriate Torx or hex key as specified by the drill body manufacturer to achieve correct clamping torque — do not overtighten, as this can crack the carbide substrate. Inspect the insert pocket and clamping screw for wear or debris before installing a new insert.