Jacobs 7346DN Drill Chuck Arbor 1/2-20 2MT Taper

Product Description

The JACOBS 7346DN is a threaded drill chuck arbor designed to connect a drill chuck to a machine spindle with a Morse taper socket. The arbor features a 1/2-20 threaded mount on the chuck end and a No. 2 Morse Taper (2MT) shank on the machine end. At 4.06 inches in overall length and weighing 0.312 pounds, this is a compact, solid adapter used in drill presses, lathes, milling machines, and similar equipment. Installation is performed by machinists and shop technicians during chuck setup or replacement.

This arbor is suited for machine shop, production, and maintenance applications where a 1/2-20 threaded chuck must be mounted to a spindle with a No. 2 Morse Taper socket. Typical install scenarios include drill press chuck replacement and lathe tailstock chuck setups. The 2MT shank seats directly into the machine spindle taper bore, providing a secure, self-holding connection during operation.

Key Features

• 1/2-20 threaded chuck mount for secure chuck attachment
• No. 2 Morse Taper (2MT) shank for self-holding spindle fitment
• 4.06 inches overall length for standard chuck clearance
• Lightweight at 0.312 pounds for easy handling during installation
• Compact design suits drill presses, lathes, and milling machine tailstocks

Compatibility

Designed for use with 1/2-20 threaded drill chucks mounted to spindles with a No. 2 Morse Taper bore, common on benchtop and floor-model drill presses and lathe tailstocks.

Installation Notes

Installation is typically performed by a machinist or maintenance technician. Power down and lock out the machine before seating or removing the arbor. The 2MT shank should be cleaned and free of burrs or debris before insertion to ensure full taper contact. A drawbar or drift key appropriate to the machine spindle may be needed for proper seating or removal of the taper shank.