Allied Machine 455H-0227 Spade Drill Insert 2-27/32 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 455H-0227 is a cobalt spade drill insert designed for high-performance hole drilling in demanding machining applications. Part of the GEN2 T-A series, this insert features a 144-degree point angle and an AM200 PVD coating for extended tool life and heat resistance. At 2-27/32 inches in diameter with a Seat Size 5 designation and a thickness of 0.4375 inches, it is built to deliver consistent performance in production environments. Machinists and tool crib personnel handling medium-to-large diameter drilling operations will find this insert well-suited to their workflow.

This insert is intended for use in GEN2 T-A spade drill holders with a Seat Size 5 interface. It is engineered for drilling into a broad range of primary workpiece materials including steel, stainless steel, cast iron, super-alloys, titanium, and hard materials. Typical applications include heavy-duty production drilling in industrial machining centers and manual boring operations where consistent hole geometry is required. The AM200 PVD coating supports performance in both dry and coolant-assisted cutting environments.

Key Features

• 2-27/32 inch diameter with Seat Size 5 for GEN2 T-A spade drill holder compatibility
• 144-degree point angle for precise entry and reduced thrust in hard materials
• Cobalt insert material provides high heat and wear resistance
• AM200 PVD coating extends tool life across a wide range of workpiece materials
• Compatible with steel, stainless steel, cast iron, super-alloys, titanium, and hard materials (material codes P, M, K, S, H)
• Lightweight at 0.1 pounds for easy handling during insert changes

Compatibility

Designed for use with ALLIED MACHINE AND ENGINEERING GEN2 T-A series spade drill holders requiring a Seat Size 5 insert. Verified workpiece material compatibility includes steel (P), stainless steel (M), cast iron (K), super-alloys and titanium (S), and hard materials (H).

Installation Notes

This insert is installed by a machinist or tooling technician into a compatible GEN2 T-A spade drill holder. Always ensure the machine spindle is powered down and locked out before performing insert changes. Seat surfaces on both the insert and holder should be clean and free of chips or debris before seating the insert. Follow the drill holder manufacturer's torque specifications for the clamping screw to ensure proper insert retention and runout performance.