Allied Machine 24040S-004I Indexable Spade Drill Taper Shank

Product Description

The ALLIED MACHINE AND ENGINEERING 24040S-004I is a T-A 4 Series indexable spade drill designed for high-productivity hole-making in a wide range of workpiece materials. It accepts spade drill inserts and drills diameters from 1-29/32 inches to 2-9/16 inches, with a maximum drill depth of 9-1/8 inches. The straight flute geometry and 4MT taper shank make it a direct-mount solution for taper-spindle machines without the need for an adapter chuck. Through-coolant capability via dual radial entry ports supports chip evacuation and tool life in demanding production environments. Installed by machinists and tool-and-die professionals in metalworking shops.

The 24040S-004I is rated for general-purpose drilling across universal workpiece material categories, including steel, cast iron, non-ferrous metals, and high-temperature alloys. Its standard-length body and 9-1/8-inch flute length suit it for intermediate-depth holes in structural components, flanges, and heavy machine parts. The 4MT taper shank seats directly into compatible taper-spindle lathes, mills, and radial arm drills. Coolant ports are threaded 1/4 inch NPT and are compatible with the 2T-4SR rotary coolant adapter for live-spindle applications.

Key Features

• Drilling range from 1-29/32 inches to 2-9/16 inches accommodates multiple insert sizes in one holder
• Through-coolant via 2-radial entry ports with 1/4 inch NPT threaded coolant holes
• 4MT taper shank for direct mounting in compatible taper-spindle machines
• Straight flute design promotes chip flow and reduces cutting forces in through-holes
• Compatible with 2T-4SR rotary coolant adapter for live-spindle setups
• General-purpose rating covers steel, cast iron, non-ferrous, and superalloy materials

Compatibility

Designed for use with T-A 4 Series spade drill inserts. Compatible with the 2T-4SR rotary coolant adapter. Fits machines equipped with a 4MT taper spindle. Primary workpiece material codes H, K, M, N, P, and S are supported per manufacturer classification.

Installation Notes

Installation is performed by a qualified machinist. Before mounting, ensure the machine spindle and taper bore are clean and free of burrs to achieve full taper contact. Power down and lock out the machine before seating or removing the shank. Coolant lines should be connected and pressure-tested before running through-coolant to confirm there are no leaks at the NPT fittings.