Sandvik Coromant 6770736 Indexable Drill Insert 880GT Carbide

Product Description

The SANDVIK COROMANT 6770736 is a solid carbide indexable drill insert designed for use with 880-series indexable drills in metal cutting and hole-making operations. This insert carries a 4344 manufacturer grade and features a PVD-applied (Ti,Al)N2 coating that improves wear resistance and extends tool life in demanding materials. The square insert shape and GT chipbreaker geometry help control chip formation during drilling. With a 7.4 mm inscribed circle diameter and a 0.70 mm corner radius, the 6770736 is sized for precision hole-making in production environments. Installation is performed by machinists and tooling technicians on CNC and manual drilling equipment.

This insert is suited for indexable drilling applications on machining centers, CNC lathes with live tooling, and drill presses where the 880 insert style is specified. The right-hand cutting orientation and GT chipbreaker make it appropriate for through-hole and blind-hole drilling in steel, stainless steel, and other materials where PVD-coated carbide inserts are recommended. The insert size designation is 403, with a body length of 19.00 mm (0.748 inches) and a thickness of 0.1102 inches. A minimum order quantity of 10 pieces applies to this part number.

Key Features

• Solid carbide substrate with PVD (Ti,Al)N2 coating for enhanced wear resistance
• 880 insert style with GT chipbreaker geometry for controlled chip evacuation
• Square insert shape, 7.4 mm inscribed circle, 4344 manufacturer grade
• 0.70 mm corner radius for defined edge geometry
• Right-hand cutting orientation, insert size 403
• Hole diameter 2.8 mm for secure clamping in 880-series drill bodies

Compatibility

Designed for use in SANDVIK COROMANT 880-series indexable drill bodies requiring an 880 insert style, square shape, size 403 insert with GT chipbreaker geometry. Confirm drill body seat specifications before ordering.

Installation Notes

Insert replacement should be performed by a qualified machinist or tooling technician with the machine at a full stop and all power isolated. Use the appropriate Torx or hex key specified for the 880-series clamping screw and avoid over-tightening, which can crack the carbide. Inspect the insert seat for chips or debris before seating the new insert. Follow the tooling manufacturer guidelines for indexing procedure and clamping torque ranges.