Allied Machine 454H-0208 Spade Drill Insert 2-1/4 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 454H-0208 is a cobalt spade drill insert designed for high-performance hole-making operations in demanding materials. This insert measures 2-1/4 inches in diameter, features a 132-degree point angle, and carries a seat size of 4. It is manufactured from Super Cobalt with an AM200 PVD coating applied for extended tool life and heat resistance. The 454H-0208 belongs to the GEN2 T-A series and is intended for use in spade drill holder systems. Machinists and tool-and-die professionals install this insert in CNC and manual drilling applications where consistent hole geometry and insert durability are critical.

This insert is suited for drilling operations across a broad range of primary workpiece materials including steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The GEN2 T-A series configuration targets production environments where material removal rates and insert change-out speed matter. Applications include structural fabrication, aerospace component drilling, heavy equipment manufacturing, and general metalworking where a 2-1/4 inch bore diameter is required. The fractional inch measurement system makes it compatible with standard inch-based tooling setups common in North American machine shops.

Key Features

• 2-1/4 inch diameter with a 132-degree point angle for aggressive material entry
• Super Cobalt substrate provides increased hardness and heat resistance over standard cobalt grades
• AM200 PVD coating extends insert life and reduces built-up edge in ferrous materials
• GEN2 T-A series design for use with compatible T-A spade drill holder bodies
• Seat size 4 matches standard T-A holder seating for secure, repeatable insert location
• Rated for steel, stainless steel, cast iron, superalloys, titanium, and hard material workpieces

Compatibility

Designed for use with GEN2 T-A series spade drill holder bodies accepting a seat size 4 insert. Verify holder series and seat size before ordering to confirm fit.

Installation Notes

Installation is performed by qualified machinists following standard toolroom practices. Power down and lock out the machine spindle before seating or removing the insert. Use the correct torx or hex key as specified by the holder manufacturer to achieve proper clamping torque without stripping the insert seat. Inspect the holder seat for chips or wear before installing a new insert to ensure accurate positioning and prevent premature insert failure.