Jacobs 7323 Chuck Arbor

The Jacobs 7323 Chuck Arbor is a 4MT to 5J adapter that lets a Morse Taper 4 spindle drive a Jacobs 5J chuck. It uses a 4MT male shank and a 5J chuck interface, enabling a Jacobs chuck to be mounted on compatible equipment for holding drills, reamers, and other rotary tools in a straightforward toolholding setup. This arbor is designed for Jacobs 5J chucks and is identified by catalog number 7323. By bridging MT4 spindles to 5J chucks, it enables a compact, rigid connection between spindle and chuck—an arrangement that avoids changing the machine’s spindle while expanding toolholding options. The 7323 arbor provides the necessary interface to convert between these two standard toolholding components, supporting reliable performance in metalworking tasks that require quick chuck changes and secure, concentric toolholding.