Sandvik Coromant 6770738 Indexable Drill Insert

Product Description

The SANDVIK COROMANT 6770738 is a solid carbide indexable drill insert designed for use with 880-series indexable drills. It features a TiAlN2 coating applied via PVD process, providing heat and wear resistance for demanding drilling operations in steel and cast materials. The insert carries an 8.9 mm (0.3504 inches) inscribed circle, a thickness of 0.1181 inches, and a 0.5 mm corner radius. The square shape and GM chipbreaker geometry are engineered to control chip formation and reduce cutting forces during through-hole and blind-hole drilling. This insert is installed by machining professionals and CNC operators in metalworking and manufacturing environments.

This insert is intended for use in 880-series indexable drill bodies running right-hand cutting direction. It is suited for production drilling applications in shop environments where consistent hole quality and tool life are priorities. The GM chipbreaker designation targets general-purpose machining in a range of workpiece materials. The mounting hole diameter is 3.2 mm (0.1260 inches), which aligns with the standard 880-series insert pocket fastening system. Typical applications include drilling operations on machining centers and CNC lathes across both job shop and high-volume production settings.

Key Features

• Solid carbide substrate with manufacturer grade 4344 for wear resistance and edge stability
• TiAlN2 PVD coating for elevated temperature performance and extended tool life
• GM chipbreaker geometry designed for general-purpose drilling with controlled chip evacuation
• Square insert shape with 0.5 mm corner radius for consistent cutting edge geometry
• Right-hand cutting direction with 8.9 mm inscribed circle for use in standard 880-series drill bodies
• Insert size designation 050305 for precise pocket fitment verification

Compatibility

Designed for use with SANDVIK COROMANT 880-series indexable drill bodies requiring a square solid carbide insert with an 8.9 mm inscribed circle and 3.2 mm mounting hole diameter.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and locked out before changing inserts. Use the correct torx or hex key to secure the insert fastening screw to the drill body pocket without over-torquing. Inspect the insert pocket seating surface and fastening screw for wear or debris before installing a new insert.