Collis Tool 74027 Drill Driver 1 Inch MT4 Morse Taper

Product Description

The COLLIS TOOL 74027 is a drill driver designed to mount and drive 1-inch shank drill bits using an MT4 outside Morse taper interface. The driver accepts drill tangs ranging from 0.601 to 0.609 inches thick and features a 3/8-inch projection. With a drill depth of 2-1/8 inches, this driver provides secure seating for the bit shank inside the taper socket. It is a precision toolholding component used in machine shop and industrial drilling operations where consistent, repeatable bit positioning is critical. Machinists and toolroom technicians working with drill presses, lathes, or milling machines are the typical end users.

This drill driver is suited for applications requiring a 1-inch drill bit driven through an MT4 taper spindle. Typical installations include drill press quills, lathe tailstocks, and milling machine spindles configured with MT4 taper bores. The drill tang compatibility ensures the driver engages the flat tang on the drill shank, preventing rotation under load. This makes it appropriate for production and maintenance drilling operations in metalworking, fabrication, and industrial settings where MT4 toolholding is the standard interface.

Key Features

• MT4 outside Morse taper shank for direct mounting in MT4-bored spindles and quills
• Accepts 1-inch drill shank with drill tang compatibility for positive rotational engagement
• Drill tang thickness range of 0.601 to 0.609 inches ensures proper fit across standard 1-inch drill tangs
• 3/8-inch projection provides controlled bit extension from the driver body
• 2-1/8-inch drill depth supports full shank seating for stable, concentric bit retention

Compatibility

Designed for use with 1-inch shank drill bits that include a standard drill tang, installed in machine spindles or tailstocks with an MT4 inside Morse taper bore.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Before mounting or removing the driver, de-energize the machine and ensure the spindle is fully stopped. Clean both the MT4 taper on the driver and the mating bore in the spindle before seating to prevent fretting and ensure accurate alignment. Use a proper drift and mallet in the designated drift slot to remove the driver from the spindle; never attempt to pry or strike the drill body directly.