Allied Machine 455H-0228 Spade Drill Insert 2-7/8 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 455H-0228 is a cobalt spade drill insert designed for high-performance hole-making in demanding industrial machining applications. With a 2-7/8 inch diameter and a 144-degree point angle, this insert delivers aggressive cutting geometry suited for materials that wear down standard high-speed steel tooling. The insert is manufactured from Super Cobalt and carries an AM200 PVD coating, which reduces friction and extends cutting life. It belongs to the GEN2 T-A series and fits a Seat Size 5 holder. At 0.1 pounds, it is a compact, precision-ground component intended for use in CNC machining centers and production drilling operations.

This insert is intended for professional machinists and tooling specialists working in production or job-shop environments. The GEN2 T-A series is a modular spade drilling system that separates the insert from the blade and holder, allowing for quick tip changes without removing the full tool assembly from the spindle. The 455H-0228 is rated for use in steel, stainless steel, cast iron, superalloys, titanium, and hard materials, making it a versatile choice across a range of workpiece types encountered in aerospace, automotive, and general manufacturing operations.

Key Features

• 2-7/8 inch diameter with 144-degree point angle for aggressive entry geometry
• Super Cobalt insert material provides high hardness and heat resistance
• AM200 PVD coating reduces cutting friction and extends tool life in abrasive materials
• GEN2 T-A series modular design enables rapid insert changeover at the machine
• Seat Size 5 for direct compatibility with matching GEN2 T-A holders and blades
• Rated for steel, stainless steel, cast iron, superalloys, titanium, and hard materials

Compatibility

Designed for use with GEN2 T-A series Seat Size 5 spade drill blades and holders. Compatible workpiece material classifications include P (Steel), M (Stainless Steel), K (Cast Iron), S (Superalloys and Titanium), and H (Hard Material) per ISO material group designations.

Installation Notes

Installation and changeout should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before seating or removing the insert. Use the correct torque wrench and insert screw as specified by the holder manufacturer to secure the insert properly in the blade seat. Verify insert seating and blade-to-holder fit before resuming cutting operations.