Allied Machine 455H-0225 Spade Drill Insert 2-25/32 in

Product Description

The ALLIED MACHINE AND ENGINEERING 455H-0225 is a spade drill insert designed for high-performance drilling in demanding industrial applications. It features a 2-25/32 inch diameter, a 144-degree point angle, and is manufactured from Super Cobalt with an AM200 PVD coating. This insert belongs to the GEN2 T-A series and seats in a Size 5 holder. It is installed by machinists and tooling technicians operating CNC machining centers, drilling machines, and similar metal-cutting equipment where precise, repeatable hole geometry is required.

This insert is suited for drilling into a broad range of workpiece materials including steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The GEN2 T-A series is a modular spade drilling system in which the insert mounts to a reusable holder shank, making it a cost-effective approach to large-diameter hole production in production-volume environments. It is commonly used in heavy manufacturing, aerospace component production, oil and gas equipment fabrication, and general metalworking shops.

Key Features

• 2-25/32 inch diameter for large-bore hole drilling without dedicated twist drill tooling
• 144-degree point angle optimized for entry stability and chip formation in hard and tough materials
• Super Cobalt substrate provides elevated heat and wear resistance compared to standard HSS
• AM200 PVD coating reduces friction and extends tool life across the listed workpiece material groups
• GEN2 T-A series design for quick insert replacement on compatible holder shanks
• Fractional inch system sizing for compatibility with standard imperial tooling setups

Compatibility

Designed for use in Allied Machine and Engineering GEN2 T-A series Seat Size 5 spade drill holders. Compatible workpiece material classifications include P (Steel), M (Stainless Steel), K (Cast Iron), S (Superalloys and Titanium), and H (Hard Material). Verify holder seat size and shank configuration before ordering.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before seating or removing the insert. Ensure the holder pocket and insert seating surfaces are clean and free of chips or debris before torquing the retention screw. Follow the tooling manufacturer's recommended clamping procedure for GEN2 T-A series inserts to avoid insert movement or damage during cutting.