![Quote](images/misc/quote_icon.png)
Originally Posted by
firestorm1284
The quote was from Nook, they must have raised their prices! By the way I read your posts with caleb105 and saw your setup and how you preloaded your nuts. It looks like a sweet setup! I'd like to do something similar if I can do it without breaking the bank.
Well, I guess your answer begs the question.. is .003-.004"/foot acceptable if you preload your ballnuts and don't have any backlash in the rest of the system?
My understanding is that the ballnuts from nook have a backlash of .01, but you can increase ball size to get it down to about .003 at the cost of increased wear on the screw. Is .003 an acceptable amount of backlash? How much faster will my ballscrews wear with the larger balls?
I guess what I'm driving at is: if I don't want to spend 374 dollars for the nook screw and ballnuts, is there an OK option that will give me decent accuracy at a decent savings?
As an example, I see Roton has ballnuts at about 23 dollars each, and ballscrews at 10 dollars per foot, which would then run me only 198 dollars for the whole setup. But I contacted Roton and their ballscrews only are accurate to .009-.012. That is unacceptable, but is there some other company that may have better accuracy, but still with a substantial savings.