BTW: if you are going to do the mechanism part anyway, what stops you from making the few simple features to create the bearing? I used the data from the imported files to make the one in the video... IE: ball bearing size, race parameters, etc... With that, you have everything you need to make the bearing assembly at any complexity level you want.
The radial bearing is a great self-tutorial to understand both gears and servo motors. It was quite a fulfilling challenge to simply work out the appropriate gear ratios alone. That is why I put the test features into the model. You'd be surprised how easy it is to fool yourself that you got this defined accurately. in the case of the video, I -know for a fact- that it is accurate. With that information, I can define any bearing with a high level of confidence.