Sandvik Coromant 6770727 Indexable Drill Insert Carbide

Product Description

The SANDVIK COROMANT 6770727 is a solid carbide indexable drill insert designed for use with compatible modular indexable drill systems. Carrying the 880 insert style designation with a GR chipbreaker geometry, this insert is PVD-coated with TiAlN2 for improved wear resistance and thermal stability during drilling operations. The square-shaped insert has an inscribed circle of 5.10 mm (0.2008 inches), a thickness of 0.0945 inches, and a corner radius of 0.50 mm (0.0197 inches). It is suited for right-hand cutting applications in ferrous and non-ferrous materials. Machinists and tool-crib professionals handling production drilling setups are the primary users of this insert.

This insert is intended for use in production drilling environments where modular indexable drill bodies accept the 880-series insert style. The GR chipbreaker geometry is engineered to manage chip formation across a range of workpiece materials, helping maintain consistent hole quality and reducing the need for frequent insert changes. The insert size designation is 020205, and the hole diameter is 2.20 mm (0.0866 inches), which corresponds to the mounting screw used in compatible 880-style drill bodies. Typical applications include through-hole and blind-hole drilling in machining centers and CNC lathes with driven tooling.

Key Features

• Solid carbide substrate with PVD-applied TiAlN2 coating for thermal and wear resistance
• 880 insert style with GR chipbreaker geometry for controlled chip evacuation
• Square shape with 5.10 mm inscribed circle and 0.0945-inch thickness
• 0.50 mm corner radius for general-purpose drilling applications
• Right-hand cutting direction
• Insert size 020205 with 2.20 mm mounting hole diameter

Compatibility

Designed as an OEM-style replacement insert for indexable drill bodies that accept the 880-series square insert style with a 2.20 mm mounting hole and 5.10 mm inscribed circle.

Installation Notes

Insert replacement should be performed by a qualified machinist with the machine in a powered-down, locked-out state. Use the appropriate Torx or hex key as specified by the drill body manufacturer to seat the insert screw — do not overtighten, as carbide inserts are brittle and can fracture under excess clamp load. Inspect the insert pocket for chips or debris before seating a new insert, and confirm the cutting direction matches the spindle rotation before resuming operation.