Seco 00077640 Milling Insert Octagon F40M Solid Carbide

Product Description

The SECO 00077640 is a solid carbide milling insert in an octagon shape, designed for use in indexable face and shoulder milling operations. Manufactured to ANSI and ISO standards under the OFMT-05 series, it carries the F40M fine-grain grade and a dual-layer TiAlN and TiN PVD coating. The insert measures 0.5189 inches in diameter (inscribed circle), 0.1874 inches thick, and offers a maximum depth of cut of 0.1063 inches. With 8 usable cutting edges and a right-hand orientation, it delivers consistent performance in high-production environments. Licensed machinists and CNC operators install this insert in compatible SECO milling cutter bodies.

This insert is suited for milling applications across a wide range of workpiece materials, including steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. The M14 chip breaker geometry supports stable chip evacuation across these material groups. The neutral rake angle and T-Land cutting edge style make it a reliable choice for both roughing and general-purpose milling passes in ferrous and difficult-to-machine materials on CNC machining centers.

Key Features

• Octagon insert shape with 8 cutting edges for maximum index life per insert
• F40M fine-grain solid carbide substrate with TiAlN and TiN PVD dual-layer coating
• M14 chip breaker optimized for steel, cast iron, superalloys, and titanium
• Maximum depth of cut of 0.1063 inches with a 0.0197-inch corner radius
• Neutral rake angle and T-Land cutting edge style for controlled edge engagement
• Single-sided, screw-held insert with right-hand cutting orientation
• Compliant with ISO standards; ANSI code OFMT050405TR-M14

Compatibility

Compatible with SECO cutter series R217.43-05 and R220.43-05. Designed as a direct OEM-style replacement insert for OFMT-05 series milling cutter bodies.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Always power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torx or hex key as specified by the cutter body manufacturer when tightening the insert screw, and verify the insert is fully seated and secure before resuming cuts. Inspect the cutter body pocket and screw for wear or damage at each insert change.