View Full Version : South Bend Lathe
05-23-2001, 05:45 PM
I just bought a South Bend 9 inch lathe made in 1947 model-s/n is 7490NAR8.
When I took the 4 jaw chuck loose it fell off in my hands,there is only one thread on the spindle,the part no is PT200N2. Does anybody know of a company that has used parts
or can I have it welded and cut new threads.
Any info would sure be appreciated.
05-23-2001, 10:18 PM
Check out HSM. I have had good experence with Sobel, Plaza, Meridian and I am sure there are other goos ones. (come to think of it, I have NEVER had a bad experence with a HSM advertizer)
I wouldn't weld -- too much risk of warping the spindle -- but what you might do is have the thread ground off (I think the spindle is hardened) and put a sleeve on it with Loctite 609. Then cut new threads in that. Use a good-quality steel for the sleeve, like 1144 Stressproof, or 4140. There may not be enough thickness on the spindle to do this, but I think there should be.
You could always make the sleeve o.d. (and the thread) slightly larger than the original, but then you'd have to re-cut all your chuck backplates to fit. A nuisance, but not impossible.
Easiest solution though is probably to buy a used spindle from one of the places listed. All three (Plaza, Sobel, Meridian) have excellet reputations.