Allied Machine 152A-25 Spade Drill Insert 63/64 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 152A-25 is a cobalt spade drill insert designed for high-performance hole-making operations in demanding industrial and metalworking applications. Measuring 63/64 inches in diameter with a 132-degree point angle, this insert fits a Seat Size 2 holder in the T-A series system. The insert is manufactured from T15 cobalt material grade and features a TiAlN PVD coating that extends tool life by reducing heat buildup and wear at the cutting edge. At 0.1875 inches thickness, it delivers consistent geometry across production runs. Machinists and tool and die professionals working in job shops, production facilities, and maintenance environments rely on this insert for repeatable, accurate drilling.

The 152A-25 is suited for drilling steel, stainless steel, cast iron, super-alloys, and titanium. These material categories correspond to workpiece classifications P, M, K, and S. The T-A series spade drill system is a common platform used in CNC machining centers, lathes with live tooling, and manual boring mills where replaceable insert tooling reduces downtime compared to solid drill replacement. The TiAlN coating provides thermal resistance particularly relevant when cutting stainless steel and titanium, where heat generation at the cutting zone is a primary concern.

Key Features

• 63/64 inch cutting diameter for precise hole sizing without regrinding
• 132-degree point angle suited for flat-bottom entry and reduced thrust force
• T15 cobalt material grade offers high hardness and wear resistance
• TiAlN PVD coating reduces heat buildup and extends insert life in tough materials
• Seat Size 2 compatibility integrates directly with standard T-A series spade drill bodies
• 0.1875 inch insert thickness maintains rigidity during interrupted cuts

Compatibility

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

Installation Notes

Spade drill insert replacement is performed by a qualified machinist or toolroom technician. Before changing an insert, confirm the machine spindle is fully stopped and locked out per applicable machine guarding and lockout/tagout procedures. Seat the insert fully against the holder pocket faces before tightening the clamping screw, and inspect the seat for chips or debris that could affect insert seating and runout. Consult the T-A series holder documentation for recommended clamping torque and coolant delivery settings appropriate to the holder body in use.