Makes me wonder if you could improve the quality of such a
screw/nut combination by using some very fine lapping compond
and exersise the nut over the entire length under motor power
for some 30 minutes.
Then take everything apart clean, scrap the balls used and reload
new ones.
I think it would be likly to cause uneven wear on the balls because
if they bind momentaryly it will create a flat spot on that ball.
I would expect the effect on the screw and nuthousing to be very positive.
Well just some thought.
In general I would consider such a arangement to be much more sensitive
to contamination of dirt with the effect of more liklyhood to binding.
Most of the people I know of that have used oversize balls sucessfully have
still a small amount of backlash left in there. |