Allied Machine 453T-0128 Spade Drill Insert 1-7/8in Cobalt Tin

Product Description

The ALLIED MACHINE AND ENGINEERING 453T-0128 is a cobalt spade drill insert engineered for high-performance drilling in demanding metalworking applications. Measuring 1-7/8 inches in diameter with a Seat Size 3 designation, this insert features a 132-degree point angle and a TiN (titanium nitride) PVD coating applied over an M4 material grade cobalt substrate. The TiN coating reduces friction and extends cutting edge life in abrasive materials. At 0.25 inches thick, it is built to the fractional inch measurement system and fits the GEN2 T-A series holder platform. Licensed machinists and toolroom professionals install this insert as part of a modular spade drilling system.

This insert is suited for production and job-shop drilling operations across a broad range of workpiece materials. Rated for use in steel, stainless steel, cast iron, superalloys, titanium, and hard materials, it addresses ISO material groups P, M, K, S, and H. It is a practical choice for through-hole and blind-hole drilling where replaceable insert geometry reduces tooling cost compared to solid-carbide or brazed alternatives. The GEN2 T-A series platform is a common modular spade drilling system used on CNC machining centers, lathes, and drill presses.

Key Features

• 1-7/8 inch diameter with Seat Size 3 for direct GEN2 T-A holder compatibility
• 132-degree point angle for reduced thrust and clean entry in tough alloys
• Cobalt substrate with M4 material grade for toughness in interrupted cuts
• TiN PVD coating extends edge life and reduces built-up edge in steel and stainless
• Rated for ISO material groups P, M, K, S, and H — steel through hard materials
• Fractional inch system; 0.25 inches thick for precise seating in the holder pocket

Compatibility

Designed for use with ALLIED MACHINE AND ENGINEERING GEN2 T-A series spade drill holders accepting a Seat Size 3 insert at 1-7/8 inches diameter.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Always de-energize and lock out the machine before changing inserts. Seat the insert fully in the holder pocket and torque the clamping screw to the holder manufacturer's specified value using a calibrated torque wrench — do not estimate by feel. Inspect the holder pocket for chips or wear before seating a new insert, as debris under the insert will cause premature edge failure or holder damage.