Allied 153A-45.5 Spade Drill Insert 45.5mm Cobalt Tialn

Product Description

The ALLIED MACHINE AND ENGINEERING 153A-45.5 is a cobalt spade drill insert engineered for high-performance drilling in demanding industrial applications. Part of the T-A series, this insert features a 45.5 mm cutting diameter and a Seat Size 3 designation for proper holder fitment. The TiAlN PVD coating provides thermal resistance and surface hardness, extending tool life in abrasive and heat-generating cuts. The 90-degree point angle supports aggressive material entry with controlled chip formation. At 0.25 inches thickness and 0.1 pounds, the insert is a direct drop-in replacement for worn T-A series seats. Machinists and tool crib technicians managing high-volume or specialty drilling programs will find this insert suited for production environments.

This insert is designed for use in CNC machining centers, horizontal boring mills, and manual drill presses equipped with T-A series spade drill holders. Its primary workpiece materials include steel, stainless steel, cast iron, super-alloys, and titanium, making it a versatile choice across aerospace, energy, and general metalworking operations. The T15 material grade cobalt substrate maintains hardness at elevated cutting temperatures, making it especially effective when drilling interrupted cuts or hard-to-machine alloys. Shops handling production runs across mixed material types will find this insert compatible with a broad range of workpiece specifications without changing insert platforms.

Key Features

• 45.5 mm cutting diameter with Seat Size 3 for T-A series holder compatibility
• Cobalt substrate, T15 material grade for elevated heat and wear resistance
• TiAlN PVD coating reduces thermal buildup and extends tool life in abrasive materials
• 90-degree point angle for controlled entry and reduced thrust in production drilling
• Rated for steel, stainless steel, cast iron, super-alloys, and titanium workpieces
• 0.25 inch insert thickness for rigid seating in standard T-A holders

Compatibility

Designed for use with T-A series Seat Size 3 spade drill holders. Compatible primary workpiece material codes are P (steel), M (stainless steel), K (cast iron), and S (super-alloys and titanium).

Installation Notes

Installation is performed by machinists or tooling technicians following standard insert seating procedures for T-A series holders. Ensure the holder and machine spindle are fully de-energized and locked out before changing inserts. Seat the insert firmly and verify screw torque per the holder manufacturer's tooling documentation before resuming cutting operations. Inspect the seat pocket for chips or damage before installing a new insert to avoid premature edge failure.