Allied Machine 151T-22 Spade Drill Insert 22mm Tin Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 151T-22 is a cobalt spade drill insert designed for high-performance hole-making in demanding metalworking applications. Part of the T-A series, this insert features a 132-degree point angle and a physical vapor deposition (PVD) TiN coating that extends tool life by reducing friction and heat buildup at the cutting edge. Built from T15 material grade cobalt, the insert measures 0.1563 inches in thickness and fits a Seat Size 1 T-A series holder. It is suited for production drilling where consistent diameter accuracy and tool longevity are priorities.

This insert is engineered for machining steel, stainless steel, cast iron, super-alloys, and titanium, covering ISO material codes P, M, K, and S. It is well-suited for CNC machining centers, drill presses, and turning centers in job shop and production environments where a range of difficult-to-machine materials must be processed with a single insert geometry. The 22 mm cutting diameter makes it appropriate for medium-bore drilling operations across aerospace, automotive, and general manufacturing applications.

Key Features

• 22 mm cutting diameter with 132-degree point angle for reduced thrust and clean entry
• T15 cobalt substrate provides hardness and heat resistance for difficult materials
• PVD TiN coating reduces friction and improves wear resistance at the cutting edge
• Seat Size 1 T-A series compatibility for quick indexable insert changes without holder replacement
• Rated for steel, stainless steel, cast iron, super-alloys, and titanium (ISO P, M, K, S)

Compatibility

Designed for use with Seat Size 1 T-A series spade drill holders from Allied Machine and Engineering. No additional compatible holder or machine model numbers were specified in the product data.

Installation Notes

Insert indexing and replacement should be performed by a qualified machinist or tooling technician with the machine fully powered down and the spindle locked. Use the appropriate T-A series insert seating wrench to secure the insert to the holder at the correct clamp engagement — do not over-tighten or substitute non-OEM fasteners. Inspect the insert seat for chips or debris before seating the new insert, as contamination can affect runout and bore accuracy. Follow the machine tool manufacturer and ANSI B11 safety guidelines for rotating cutting tool operation.