Collis Tool 71178 Drill Driver MT1 Morse Taper No. 9

Product Description

The COLLIS TOOL 71178 is a No. 9 drill driver with an MT1 outside Morse taper, designed to drive straight-shank drills in machines equipped with Morse taper spindles. The driver accepts drill tang thicknesses from 0.118 to 0.122 inches and provides a 3/16-inch projection. It delivers a positive drive engagement through the tang slot, transmitting torque reliably without relying solely on the taper fit. Machinists, tool and die technicians, and maintenance professionals use this type of driver in drill presses, lathes, and milling machine spindles where a Morse taper socket is standard. The compact profile suits close-clearance setups where space around the spindle nose is limited.

This drill driver is suited for use in machine tool spindles with a No. 1 Morse taper (MT1) socket. It accepts drills with a decimal inch size of 0.1969 and a drill depth of 7/8 inch. Typical applications include production drilling operations, tool room work, and general machining where a secure, repeatable tang-drive connection is required. The tang-compatible design ensures proper seating and positive drive for straight-shank tooling converted to taper-shank mounting.

Key Features

• MT1 outside Morse taper for direct mounting in No. 1 Morse taper spindle sockets
• Accepts drill tang thickness of 0.118 to 0.122 inches for a secure positive drive
• 3/16-inch projection keeps the drill positioned accurately relative to the spindle face
• Drill tang compatible design transmits torque through the tang slot, not taper friction alone
• Decimal inch drill size of 0.1969 with a 7/8-inch drill depth

Compatibility

Designed for use with straight-shank drills requiring an MT1 Morse taper driver interface; compatible with drill presses, lathes, and milling machines equipped with a No. 1 Morse taper spindle socket and accepting a drill tang thickness of 0.118 to 0.122 inches.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before seating or removing the driver. Clean the taper bore and the driver shank thoroughly before insertion to ensure full contact and accurate seating. Do not use a hammer on the driver body; use a proper drift and drift slot to remove the driver from the spindle.