Allied Machine 152A-0108 Spade Drill Insert 1-1/4 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 152A-0108 is a cobalt spade drill insert designed for high-performance hole-making in demanding machining applications. Part of the T-A series, this insert features a 132-degree point angle and a TiAlN PVD coating that improves surface hardness and heat resistance at the cutting edge. At 1-1/4 inches in diameter with a Seat Size 2 designation, it mounts into compatible T-A series spade drill holders used on CNC machining centers, lathes, and drill presses. The cobalt substrate provides toughness and wear resistance beyond standard high-speed steel, making it suitable for interrupted cuts and harder workpiece materials. Licensed machinists and tooling technicians are the primary installers of this insert.

The 152A-0108 is suited for drilling steel, stainless steel, cast iron, super-alloys, and titanium — corresponding to ISO material groups P, M, K, and S. It is appropriate for both production and job-shop environments where consistent hole geometry and long tool life are required. The T-A spade drill system is a common platform in medium-to-large diameter drilling where replaceable inserts reduce tooling cost compared to solid carbide alternatives. This insert is sold individually as a single-piece package quantity.

Key Features

• Cobalt insert material provides toughness and elevated-temperature hardness for difficult-to-machine alloys
• TiAlN PVD coating extends tool life by reducing friction and resisting heat buildup at the cutting edge
• 132-degree point angle reduces thrust force and is well-suited for general-purpose drilling into steel and cast iron
• Seat Size 2 fits standard T-A series spade drill holders for straightforward insert replacement
• Rated for primary workpiece materials including steel, stainless steel, cast iron, super-alloys, and titanium
• 0.1875-inch insert thickness provides a robust cross-section to resist deflection under cutting loads

Compatibility

Designed for use with T-A series Seat Size 2 spade drill holders. Compatible with primary workpiece materials classified under ISO groups P (steel), M (stainless steel), K (cast iron), and S (super-alloys and titanium).

Installation Notes

Insert replacement should be performed by a qualified machinist or tooling technician with the spindle fully stopped and the machine in a locked-out, de-energized state per applicable lockout/tagout procedures. Seat surfaces on the holder should be cleaned and inspected for wear or debris before seating the new insert. Use the correct T-A series insert screw and torque driver as specified by the holder manufacturer — do not substitute hardware. Verify runout and seating before returning the tool to operation.