Sandvik Coromant 6770757 Indexable Drill Insert 880LM 4344

Product Description

The SANDVIK COROMANT 6770757 is a solid carbide indexable drill insert engineered for use with 880-series indexable drills. Manufactured to grade 4344 with a PVD-applied TiAlN2 coating, this insert delivers consistent cutting performance in demanding drilling operations. It features an 18.60 mm (0.7323 inch) inscribed circle, a 1 mm (0.0394 inch) corner radius, and a square shape with the LM chipbreaker geometry. At 0.2165 inches thick, the insert is designed for secure seating in compatible 880-series drill bodies. Machinists and tooling professionals use this insert in CNC drilling operations across a range of workpiece materials.

This insert is suited for production drilling applications in machining centers and CNC lathes where indexable tooling is standard. The LM chipbreaker is intended for use in low-to-medium feed drilling scenarios, helping manage chip evacuation in through-hole and blind-hole operations. The TiAlN2 PVD coating supports performance in ferrous and non-ferrous materials at elevated cutting temperatures. Insert size designation is 090610. This insert is sold individually, with a minimum order quantity of 10 units.

Key Features

• Solid carbide construction, manufacturer grade 4344 for wear resistance and edge stability
• PVD-applied TiAlN2 coating for thermal resistance and extended tool life
• LM chipbreaker geometry designed for controlled chip formation at low-to-medium feeds
• Square insert shape with 1 mm corner radius for consistent edge presentation
• 18.60 mm inscribed circle with insert size 090610 for precise fit in 880-series drill bodies
• 4.7 mm hole diameter for secure mechanical clamping in the drill body

Compatibility

Designed as an OEM-style replacement or replenishment insert for SANDVIK COROMANT 880-series indexable drill bodies accepting insert style 880 in square geometry with insert size 090610.

Installation Notes

Insert indexing and replacement should be performed by a qualified machinist or tooling technician. Power down and lock out the machine before accessing the spindle or drill body. Use the correct Torx or insert-clamping key specified for the 880-series drill body — do not use substitute tools that may damage the clamping screw or pocket. Inspect the insert pocket for chips, debris, or wear before seating the new insert, and ensure full contact across the seating surfaces before resuming operation.