Sandvik Coromant 6770743 Indexable Drill Insert 880GR 4344

Product Description

The SANDVIK COROMANT 6770743 is a solid carbide indexable drill insert designed for use with compatible 880-series indexable drills. Manufactured to grade 4344 with a TiAlN2 PVD coating, this insert delivers hard, wear-resistant cutting performance in demanding drilling operations on steel, stainless steel, and cast materials. The square insert shape features a GR chipbreaker geometry with a 1.00 mm corner radius and a 10.65 mm inscribed circle, making it suitable for precision hole-making in production machining environments. Installation is performed by machinists and toolroom technicians on CNC machining centers and drill presses where consistent bore quality is required.

This insert is intended for use in metal-cutting drilling applications across manufacturing, aerospace, energy, and general machining industries. The 880-series insert style and size 060410 designation identify the correct toolholder pocket geometry for proper seating. The right-hand cutting direction suits standard spindle rotation on conventional vertical and horizontal machining centers. The 4.00 mm mounting hole diameter allows secure clamping via a center-lock screw in the toolholder.

Key Features

• Grade 4344 solid carbide substrate with TiAlN2 PVD coating for extended tool life in steel and stainless applications
• GR chipbreaker geometry promotes controlled chip formation and evacuation in through-hole and blind-hole drilling
• 10.65 mm inscribed circle with 1.00 mm corner radius for accurate cutting edge engagement
• Square insert shape, size 060410, seats securely in 880-series compatible toolholder pockets
• Right-hand cutting direction for standard spindle rotation compatibility
• 4.00 mm center mounting hole for positive clamping and repeatable insert positioning

Compatibility

Designed as an OEM-style replacement insert for 880-series indexable drill toolholders accepting a square, size 060410 insert with a 4.00 mm center hole and 10.65 mm inscribed circle. Verify toolholder pocket specifications against the insert grade and geometry before installation.

Installation Notes

Insert replacement should be performed by a qualified machinist or toolroom technician with the machine powered down and the spindle fully stopped. Use the appropriate Torx or hex key specified by the toolholder manufacturer when torquing the clamping screw — do not substitute fasteners. Inspect the toolholder pocket for debris, wear, or damage before seating the new insert. Follow all applicable machine shop safety procedures and tooling manufacturer guidelines during changeover.