Accupro EJ04600000MSC Taper Drill Chuck Arbor JT6 4MT

Product Description

The ACCUPRO EJ04600000MSC is a taper drill chuck arbor designed to connect a Jacobs Taper 6 (JT6) drill chuck to a 4 Morse Taper (4MT) machine spindle. The arbor serves as the interface between the chuck and the spindle, transmitting rotational force and maintaining concentricity during drilling operations. With an overall length of approximately 6.1 inches (155 millimeters), this arbor suits heavy-duty machining environments where a No. 4 Morse Taper spindle is standard equipment. Machinists and tool-room technicians install this component when mounting or replacing drill chucks on drill presses, lathes, and milling machines equipped with a 4MT spindle bore.

This arbor is suited for use in machine shops, maintenance facilities, and production environments where drill presses or lathes with a 4MT spindle accept JT6-mount chucks. It is a direct-fit solution for applications requiring a secure, precision taper-to-taper connection. The JT6 mount is one of the larger Jacobs Taper sizes, making this arbor appropriate for chucks designed to hold larger-diameter tooling in high-torque drilling setups.

Key Features

• JT6 Jacobs Taper mount for compatibility with JT6-bore drill chucks
• 4MT Morse Taper shank fits 4MT spindle bores on drill presses and lathes
• Overall length of 155 millimeters (approximately 6.1 inches) for proper chuck-to-spindle reach
• Tapered shank and mount design provides self-holding friction fit without fasteners
• Weighs 1.41 pounds for manageable handling during chuck installation

Compatibility

Designed as a direct-fit arbor for drill chucks with a JT6 Jacobs Taper mount, used with machine spindles bored to the No. 4 Morse Taper standard.

Installation Notes

Installation is performed by machinists or qualified tool-room technicians. Before installing or removing the arbor, power down the machine and confirm the spindle is fully stopped. Clean both the spindle bore and the arbor shank of chips, oil, and debris before seating the taper to ensure full contact and accurate alignment. To remove a seated Morse Taper arbor, use the appropriate drift key through the spindle drift slot rather than applying lateral force to the chuck body.