|Forum topic by JL1||posted 01-08-2013 06:16 PM||1204 views||0 times favorited||0 replies|
01-08-2013 06:16 PM
Over the weekend, I picked up a nice Shopsmith 10E (cra 1948). The Shopsmith had been in the same family for over 60yrs, and the original owner used it alot.
Anyhow, I was interested in checking the runout on the spindle. Much to my delite, the spindle runout is coming out at .003” (which is well within the factory .004”). I next mounted the factory Jacob’s drill chuck, and the runout on bottom of the chuck was .007” (not so good). I decided to try the drill chuck off of my Mark V, and I ended with the same .007” at the bottom of the chuck. Next I mounted a drill rod into the chuck, I am measuring 10 ~12 thousands” at one inch below the bottom of the chuck (argh).
Each of the above measurments are repeatible (using either drill chuck). I am very happy at the spindle runout, which is great for a 64 year old piece of equipment that as been well used. I am wonder if the tapered shaft mounted chuck is causing the additional runout or if it was just the quality of the Jacob’s drill chucks that came with the machine. They come with a plain bearing multi-craft chuck.
Have any of you other Shopsmither’s measure your drill chuck runout? Also, if anyone has an extra belt cover for a 10er please let me know.