Tormach TTS tool tightener

This is a Tormach tool tightening system that mounts to the table. It uses 2 one way needle bearings, one to tighten and one to loosen the collet nut. This is not really a 3D printed project except for the bearing cover. The Fusion360 link is provided to do the machining of the base.

It's on a 3 x 4 x .75 inch piece of Aluminum. I spotted and drilled 4ea 1/2 inch holes and then bored the bearing holes to .998 inches. I just step up the bore offset until I got the
press fit I needed. If