I am still cad-ing up my ideas and have been reading a lot on here, my question has to do with nuts for lead screws. I understand the need for antibacklash on single nut systems, and am aware of the ability to elimminate that with double nut systems, but my questions is:
By using a double nut system to prevent backlash you are inherently putting load on both the nuts and the screws. I am not to worried about wear on the screws, but on the nuts. Anyone have any idea of lifetimes?, Sugestions on improving it?
My CNC is probably going to be mounted only a few inches off the floor and the thought of having to dissassemble some very large parts to change nuts every year or so (some random timeframe i have come up with in my head) doesn't appeal to me much because the table will be very much crane worthy.
Thanx in advance