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

Product Description

The ALLIED MACHINE AND ENGINEERING 454T-0208 is a cobalt spade drill insert designed for high-performance metal drilling applications. Part of the GEN2 T-A series, this insert measures 2-1/4 inches in diameter and features a 132-degree point angle optimized for accurate entry and chip control. The insert is manufactured from Super Cobalt with a PVD-applied TiN (titanium nitride) coating, which improves surface hardness and extends tool life in demanding cutting environments. At 0.3125 inches thick, it seats into a Size 4 holder. Machinists and tooling technicians working in production or job-shop environments will find this insert suited to high-volume drilling operations.

The 454T-0208 is intended for use in ferrous and difficult-to-machine materials including steel, stainless steel, cast iron, superalloys, titanium, and hard materials. It is a fractional-inch system insert and fits standard GEN2 T-A spade drill bodies that accept a Seat Size 4 insert. This insert is appropriate for CNC machining centers, drill presses, and manual lathes where spade drill tooling is utilized. It is commonly specified when drilling large-diameter holes in structural steel, tool steel, and exotic alloy components.

Key Features

• 2-1/4 inch diameter with 132-degree point angle for controlled entry and reduced thrust
• Super Cobalt substrate provides elevated heat and wear resistance over standard HSS
• PVD TiN coating increases surface hardness and reduces built-up edge in ferrous materials
• 0.3125 inch insert thickness for rigid Seat Size 4 interface
• Rated for steel, stainless steel, cast iron, superalloys, titanium, and hard materials
• GEN2 T-A series design for compatibility with Allied T-A spade drill bodies

Compatibility

Designed for use with GEN2 T-A series spade drill bodies accepting a Seat Size 4 insert. Suitable for primary workpiece materials classified under ISO material groups P (steel), M (stainless steel), K (cast iron), S (superalloys and titanium), and H (hard materials).

Installation Notes

Spade drill insert installation and replacement should be performed by a qualified machinist or tooling technician with the machine powered down and locked out per OSHA lockout/tagout procedures. Ensure the insert seat and clamping surfaces are clean and free of chips before seating the insert. Use the correct torque driver as specified by the drill body manufacturer for the clamping screw — do not overtighten. Inspect the insert and seat for wear or damage at each tool change.