Collis Tool 73025 Drill Driver MT3 45/64 Inch

Product Description

The COLLIS TOOL 73025 is a drill driver designed to mount taper-shank drills into MT3 (Morse Taper 3) spindles. It provides a 1/4 inch projection and accepts drill tangs ranging from 7/16 inch to 0.443 inch thickness, giving the installer a secure, positive drive connection between the drill and the machine spindle. The decimal drill size is 0.7031 inches (45/64 inch), and the usable drill depth is 1-5/8 inches. This driver is compatible with drill tang configurations and is suited for metalworking, machining, and fabrication applications where MT3 tooling is the standard interface.

This drill driver is used in machining environments where a Morse Taper 3 spindle is present, such as drill presses, lathes, and milling machines in industrial, maintenance, or job-shop settings. Machinists, tool-and-die workers, and maintenance professionals working with taper-shank drill bits rely on this type of driver to maintain concentricity and drive force through the tang. The 1/4 inch projection and defined tang thickness range make it appropriate for standard MT3-compatible drill shanks in that size class.

Key Features

• MT3 outside Morse Taper shank for direct spindle mounting
• Accepts drill tang thickness from 7/16 inch to 0.443 inch
• 1/4 inch projection for positive drill seating
• Decimal drill size of 0.7031 inches (45/64 inch)
• 1-5/8 inch drill depth capacity
• Tang-compatible drive design for reliable torque transfer

Compatibility

Designed for use with MT3 taper-shank drills featuring a tang thickness between 7/16 inch and 0.443 inch. Suitable for drill presses, lathes, and other machine tools with a Morse Taper 3 spindle socket.

Installation Notes

This driver is installed by machinists or maintenance technicians using standard MT3 spindle procedures. Before installing or removing any taper tooling, the machine must be fully powered down and the spindle brought to a complete stop. Use a proper drift and mallet when seating or ejecting the taper to avoid damaging the spindle bore or the taper shank. Inspect both the driver taper and the spindle socket for burrs or contamination before assembly to ensure full seating and accurate alignment.