cool,will go from there...now I guess that this machine was designed with needle thrust bearings in combination with possibly a simple radial bearing ?Possibly NC Cams could lend his knowledge here, but I do not think you could take up all axial thrust with needle bearings and thrust washers with out damaging the bearings or washers, this is why they have angular bearings mounted in DF ( to you and I thats face to face ) with fitted spacers for pre-load...could you draw a sketch of the support bearing arrangement for us to look at ?
Understand that measuring shaft movement is kinda difficult, but what I do is find the end of the shaft that was used for the live center on the lathe ( you should see a 60 deg. hole in the end of the shaft) find a ball bearing that will fit in the hole & I use marine trailler wheel bearing grease to hold the bearing in place...that will give the end of your dial guage test indicator a good surface to ride on.Roll the table manually to 3/4 of guage travel and reverse , if the guage moves then you have found the source of the rest of your back lash.
I do encourage you to post a simple drawing if the shaft support bearing arrangement..
Wow, Madagascar...really an intriguing place eh, only in the movies ?
Adobe ( old as dirt )  |