Quote Originally Posted by John S View Post
This is the X axis off an X3 CNC conversion, Nema 23 motor but it's the longer triple stack motor, note the mounting which is only 60mm deep, this contains two angular contact preloaded bearings and the Oldham coupling.
GREAT REPLY! THanks for taking the time to write that + add photos. Really helpful!

When you say Angular Contacts - do you remember the spec + angle? I assume that these are for the leadscrews and the house acts not only as a motor mount + coupling guard but also a leadscrew support block with angular bearings, spacers, etc?

With the couplings ... what method of attach is best ... woodruff, set screw ... etc?
Same if you were to use belts what would you suggest? as it would have to be considered before the ballscrews are turned