Sandvik Coromant 6770745 Indexable Drill Insert 880LM 4344

Product Description

The SANDVIK COROMANT 6770745 is a solid carbide indexable drill insert designed for use with compatible 880-series indexable drills in metal-cutting applications. Manufactured to grade 4344 with a TiAlN2 PVD coating, this square-shaped insert delivers thermal resistance and wear protection during high-speed drilling operations. It features a 10.65 mm (0.4193 inches) inscribed circle, a thickness of 0.1378 inches, and a 0.80 mm corner radius. The LM chipbreaker geometry promotes controlled chip formation and evacuation. This insert is intended for installation and replacement by machinists and tooling specialists working in production or job-shop environments.

This insert is suited for right-hand cutting operations in ferrous and non-ferrous materials on CNC machining centers and lathes equipped with 880-series drill bodies. The 4344 grade and TiAlN2 coating make it well-matched for applications involving steel, alloy steel, and similar workpiece materials at elevated cutting speeds. The square insert style and LM chipbreaker are selected for general-purpose through-hole and blind-hole drilling where chip control and tool life are priorities.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding drill applications
• TiAlN2 PVD coating provides thermal and oxidation resistance at high cutting speeds
• LM chipbreaker geometry for effective chip formation and evacuation
• 10.65 mm inscribed circle (0.4193 inches) with 0.80 mm corner radius for consistent cutting geometry
• Right-hand cutting direction; square shape with insert size 060408
• 4.00 mm hole diameter for secure seating in compatible 880-series drill bodies

Compatibility

Designed as a replacement insert for SANDVIK COROMANT 880-series indexable drill bodies accepting square inserts with an 880LM chipbreaker style and 060408 insert size. Confirm body seat geometry and insert size before installation.

Installation Notes

Insert replacement should be performed by a qualified machinist or tooling technician with the spindle locked and machine power isolated before any tooling change. Use the appropriate torx or hex key torque driver as specified by the drill body manufacturer for the clamping screw — do not overtighten or substitute fasteners. Inspect the insert pocket and clamping screw for wear or damage before seating a new insert. Confirm cutting direction orientation matches machine setup before resuming operation.