Seco 74077376 SPGX15C1 T400D Indexable Drill Insert Carbide

Product Description

The SECO 74077376 is a solid carbide indexable drill insert designed for use in indexable insert drills where repeatable hole quality and tool life are critical. Carrying the SPGX15C1 designation, this insert features a square shape with a 90-degree included angle and an 11-degree relief angle. The T400D grade is applied via PVD coating, combining a TiAlN and TiN coating stack for heat resistance and edge durability across a broad range of workpiece materials. Part of the SECO Perfomax series, it is installed by machinists and toolroom professionals in CNC turning centers and machining centers.

This insert is suited for universal material applications, covering material grade codes H, K, M, N, P, and S. That broad material compatibility makes it a practical stock item for job shops and production environments running mixed materials including steel, stainless, cast iron, non-ferrous alloys, and superalloys. The C1 chipbreaker geometry is optimized for drilling operations where chip control at the cutting edge directly affects hole finish and tool seat condition. The Perfomax series is a common platform in production drilling applications requiring close-tolerance hole entry and consistent insert-to-insert repeatability.

Key Features

• SPGX square insert style with 90-degree included angle and 11-degree relief angle for positive cutting action
• T400D manufacturer grade with PVD-applied TiAlN and TiN coating for thermal resistance and extended edge life
• C1 chipbreaker geometry engineered for controlled chip formation in through-hole and blind-hole drilling
• 15.88 mm inscribed circle (0.6252 inches) fits standard Perfomax series insert pockets
• Universal workpiece material rating covers steel, stainless, cast iron, non-ferrous, and high-temp alloys
• Solid carbide substrate for rigidity and dimensional stability under high feed drilling conditions

Compatibility

Designed as an OEM-style replacement insert for SECO Perfomax series indexable insert drill bodies accepting the SPGX 1504 insert size with a 15.88 mm inscribed circle pocket.

Installation Notes

Insert seating and torque should follow the drill body manufacturer specification sheet for the specific Perfomax holder in use. Power down and lock out the machine spindle before changing inserts. Inspect the insert pocket and clamping screw for wear or damage before seating a new insert. Handle carbide inserts with care to avoid chipping the cutting edge prior to installation.