Sandvik Coromant 6770754 Indexable Drill Insert 880GM

Product Description

The SANDVIK COROMANT 6770754 is a solid carbide indexable drill insert designed for use in 880-series indexable drilling systems. Manufactured to grade 4344 with a PVD (Ti,Al)N2 coating applied via physical vapor deposition, this insert delivers hard, wear-resistant cutting edges suited for demanding drilling operations in steel and other ferrous materials. The square insert shape follows the 880 style with a GM chipbreaker geometry, an inscribed circle of 18.60 mm (0.7323 inches), a thickness of 0.2165 inches, and a 0.80 mm corner radius. It is installed and serviced by machinists and tooling technicians working with CNC or manual drilling setups.

This insert is intended for use in 880-style indexable drill bodies that accept square inserts with the 880GM geometry and a 4.70 mm mounting hole diameter. Typical applications include through-hole and blind-hole drilling in production machining environments, both in job shops and high-volume manufacturing. The right-hand cutting direction makes it compatible with conventional spindle rotation. It is sold individually with a minimum order quantity of 10 units.

Key Features

• Grade 4344 solid carbide substrate with PVD (Ti,Al)N2 coating for extended wear resistance
• GM chipbreaker geometry designed for controlled chip formation during drilling
• Inscribed circle of 18.60 mm (0.7323 inches) with 0.80 mm corner radius
• Square insert shape in 880 style with right-hand cutting direction
• Mounting hole diameter of 4.70 mm (0.1850 inches) for secure clamping in 880 drill bodies
• Insert size 906 with overall length of 26.00 mm (1.0236 inches)

Compatibility

Designed for use in 880-series indexable drill bodies accepting square-style inserts with the 880GM chipbreaker profile and a 4.70 mm hole diameter, right-hand cutting direction.

Installation Notes

This insert should be installed by a qualified machinist or tooling technician following the drill body manufacturer's clamping torque and seat-preparation guidelines. Before changing inserts, ensure the spindle is fully stopped and the machine is locked out per facility safety procedures. Inspect the insert pocket and clamping screw for debris or wear before seating the new insert. Do not exceed the cutting parameters specified for the 4344 grade and PVD coating combination as listed in the applicable tooling catalog.