Allied Machine 451H-22.5 Spade Drill Insert 22.5mm Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 451H-22.5 is a cobalt spade drill insert engineered for high-performance drilling in demanding metalworking applications. Sized at 22.5 mm in diameter with a 132-degree point angle, this insert fits Seat Size 1 holders in the GEN2 T-A spade drill system. The AM200 PVD coating enhances wear resistance and extends tool life when cutting through tough materials. At 0.1563 inches thick and weighing approximately 0.1 pounds, this insert is a direct, repeatable replacement that maintains consistent hole geometry across production runs. Licensed machinists and tool-room technicians are the primary installers.

This insert is designed for production and job-shop drilling in steel, stainless steel, cast iron, super-alloys, titanium, and hard materials. The GEN2 T-A platform is widely used in CNC machining centers and drill presses where indexable spade tooling is preferred over solid-carbide alternatives for cost efficiency at larger diameters. The AM200 PVD coating makes it particularly suited for dry or light-lubrication cutting strategies in ferrous and difficult-to-machine workpiece materials.

Key Features

• 22.5 mm cutting diameter with 132-degree split-point geometry for accurate hole entry and reduced thrust
• Cobalt substrate provides toughness and thermal resistance in interrupted or variable-hardness cuts
• AM200 PVD coating extends tool life across steel, stainless, cast iron, super-alloys, titanium, and hard materials
• Seat Size 1 interface fits standard GEN2 T-A spade drill holders for secure, repeatable indexing
• 0.1563-inch insert thickness maintains rigidity and minimizes deflection at the cutting edge
• Sold individually; minimum order quantity is 2 units per order

Compatibility

Designed for use with Seat Size 1 GEN2 T-A spade drill holders from ALLIED MACHINE AND ENGINEERING. Compatible workpiece materials include steel (P), stainless steel (M), cast iron (K), super-alloys and titanium (S), and hard materials (H) per ISO material classification codes provided in the product specifications.

Installation Notes

Installation and indexing should be performed by a qualified machinist or toolroom technician with the machine spindle fully stopped and locked out. Use the correct T-A insert seating wrench to secure the insert against the holder pocket; do not overtighten with non-rated tools. Inspect the holder pocket and seating surfaces for chips or debris before each insert change to ensure proper seating and runout. Follow the machine tool manufacturer and ALLIED MACHINE AND ENGINEERING guidelines for recommended speeds and feeds for the specific workpiece material.