Originally Posted by
mactec54
There is no Preload that you can do or change with the Linear Bearings, when you buy them they have a Preload amount, depending on what Preload you chose to buy
You can find Nut Torque Specs on the web just search, every type of nut and thread has a Torque spec, there is nothing critical in your case so you can just do the nut up tight
It could be 45 ft-lbs to 400 ft-lbs depending on what diameter and thread pitch you have
You need more information as to what you have post some Photos