Fourth Axis 4-jaw independent chuck for JWX-10

or MDX-40 with ZCL-40 rotary

(Product code: 4JC-KIT)




4 jaw independent chuck with the included wax tube centering arbor in place. This arbor reduces the time for centering a wax tube and clamping it to a few seconds.

Fourth Axis has developed a 4-jaw chuck system for JWX-10 (or MDX-40 with ZCL-40 rotary) which has unique features. Our chuck system is NOT mounted via a threaded post, because such mounting does not give ideal concentricity, nor permit dismount/remount to exactly the same rotation angle.




Backplate, mounting hardware and tools to fit JWX-10 (or MDX-40 with ZCL-40 rotary) included.

Our split mounting system relies on two precision plates - one secured concentric with the JWX-10 (or MDX-40 with ZCL-40 rotary) by three socket head screws, the second carrying the chuck mechanism. They align perfectly concentric, thanks to the one-piece stepped boss. Rotation is repeatable, thanks to rotation stops on the 3 joining screws.




Asymmetric objects, D-tubes, slabs can be accommodated easily.

This independent 4-jaw chuck has reversible jaws, to hold different diameter ranges. They also allow you to grip objects from inside or outside. Examples are illustrated - a wax slab 75 x 50 x 15mm for FlipFlopWax 3-sided ring procedure and a perfectly centered 28mm wax ring tube for simple rotary ring work.




4-jaw chuck can be dismounted from JWX-10 (or MDX-40 with ZCL-40 rotary) and replaced with ideal concentricity and rotation angle.

You can even remove the chuck, still securely holding the workpiece, for inspection or for manual detailing during the machining process. Be confident it can be restored to the precise original position in the mill, for further operations.




Securely holding 75 x 50 x 15mm wax slab for 3-sided ring production under the FlipFlopWax Procedure by Fourth Axis. No flip-fixture is required!

Included with this product are:

(vernier calipers shown for scale only are not included)




Loosen three screws to detach the chuck with workpiece still secured. After inspection or detailing, it can be repositioned perfectly before completing the job.



Aluminum centering arbor for wax tubes lets you clamp a ring tube exactly centered, in seconds without any measuring.

Also see our automatic 3-jaw scrollchuck system 3JC-KIT with similar mounting, suitable for circular symmetric workpieces.



This 4JC-KIT is the preferred equipment for FlipFlopWax Procedure by Fourth Axis. See our FlipFlopWax tutorial and the ArtCAM thread


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