Accupro EJ03100000MSC Taper Drill Chuck Arbor JT1 3MT

Product Description

The ACCUPRO EJ03100000MSC is a taper drill chuck arbor designed to connect a Jacobs Taper No. 1 (JT1) drill chuck to a No. 3 Morse Taper (3MT) machine spindle. This arbor serves as the interface between the chuck and the spindle bore, transferring rotational force and maintaining axial alignment during drilling operations. It is used in drill presses, milling machines, lathes, and similar machine tools equipped with a 3MT spindle. Machinists and tool-and-die professionals install this type of arbor during chuck setup or chuck replacement. The part weighs 0.62 pounds and ships as a single unit.

This chuck arbor is suited for use in machine shop environments where a JT1-mount drill chuck must be seated onto a 3MT spindle taper. Typical applications include benchtop and floor-standing drill presses, knee mills, and manual lathes with a tailstock configured for a No. 3 Morse Taper. It is appropriate for both production and maintenance situations where chucks are swapped between machines or replaced after wear.

Key Features

• JT1 Jacobs Taper mount interfaces directly with standard JT1 drill chucks
• No. 3 Morse Taper shank seats into 3MT spindle bores without adapters
• Tapered shank design provides self-holding fit under axial load
• Compact, single-piece construction at 0.62 pounds for easy handling during installation
• Sold as a single unit, suitable for individual machine setups or spare-parts inventory

Compatibility

Designed as a direct-fit arbor for drill chucks with a JT1 Jacobs Taper mount, installed into machine spindles with a No. 3 Morse Taper bore.

Installation Notes

Installation is performed by machinists or qualified machine tool technicians. Always power down and lock out the machine before seating or removing a chuck arbor. Clean both the spindle bore and the arbor taper thoroughly before insertion to ensure full surface contact and proper seating. Use a soft mallet or draw-in bolt as appropriate for the machine design; never force the arbor with excessive impact that could damage the taper surfaces. To remove, use the machine's drift slot and a proper drift pin.