100 inch lbs? I don't know, but that sounds a bit much. It may cause flaking of the raceways. The backlash is eliminated when there is zero longitudinal shift. The screw should feel quite solid in the nut, but should not feel gritty as you roll it. If there are any tight spots in the screw's length, then back off the preload until it will go over the tight spot without much force. That is about as tight as you can run it, IMO
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(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |