Collis Tool 73501 Center Drill Driver MT3 Morse Taper

Product Description

The COLLIS TOOL 73501 is a center drill driver with an MT3 outside Morse taper shank, designed to hold and drive center drills in lathe and machining operations. It accepts number 7 and number 17 center drills and features a 5/8 inch center drill body diameter with a 1/4 inch projection. The MT3 taper provides a secure, self-holding connection to the machine spindle or tailstock, reducing runout and maintaining concentricity during spotting and center drilling operations. This driver is a standard tooling component used by machinists and tool-and-die trades on manual and CNC lathes.

This center drill driver is suited for metalworking environments where precise center drilling is required prior to turning between centers or drilling operations. It is commonly installed in lathe tailstocks or milling machine spindles equipped with an MT3 taper socket. The 5/8 inch body diameter and 1/4 inch projection make it compatible with standard number 7 and number 17 combined drill and countersink tooling used in production and job-shop settings.

Key Features

• MT3 outside Morse taper shank for secure self-holding fit in standard MT3 sockets
• Accepts number 7 and number 17 center drills
• 5/8 inch center drill body diameter for positive drill retention
• 1/4 inch projection keeps the center drill close to the holder for rigidity
• Drill tang not compatible - designed for straight-shank center drill retention
• Lightweight at 0.44 pounds for easy handling and quick tooling changes

Compatibility

Designed as an OEM-style tooling driver for lathes and machining centers equipped with an MT3 Morse taper spindle or tailstock socket, compatible with number 7 and number 17 center drills with a 5/8 inch body diameter.

Installation Notes

Installation is performed by qualified machinists or tool-and-die technicians. Power down and de-energize the machine spindle before seating or removing the driver from the taper socket. Clean the MT3 taper bore and driver shank thoroughly before insertion to ensure full taper contact and prevent fretting. Never use the driver if the taper surfaces show damage, as improper seating can cause runout or unexpected ejection during operation.