http://cdn1.bigcommerce.com/server2.../DSC03337__23774.1393860286.1280.1280.JPG?c=2 Unfortunately, these bearings have been difficult to fit as shown in the linked photo. Most do not fit at all, only one can slide a few centimeters before jamming. Still, this system seems to be widely used. Is there any trick to applying the bearings smoothly?
After thoroughly sanding the inner ring on one of the bearings, it barely fits one of the threaded rods. Yet more unfortunately, that bearing no longer rotates smoothly.
You just need to flat off the tops of the thread by sticking it in a drill and holding some emery/abrasive to the end as per the v-slot actuator (link starts around the time for the lead screw)
Wow. Sanding the threaded rod. Had not thought that would be standard procedure, kind of frightening!
Your only doing the very end and your not taking much more than 0.1mm off the thread - if you do it in stages you can get a very tight engineering fit, tbh there is less tolerance it the bearing and thrust washer than the screw in to the bearing
