Last edited by David Utidjian 06-01-2009 at 02:47 AM. Atlas never made a 12' lathe under their name until the last model lathe, which was an extensive redesign and a much more rigid machine than their 10' lathes. One case in point is the Craftsman 12' lathe. The manual calls that bearing a "safety valve" (sheesh.) While Atlas did make some lathes for Sears, in many cases they were not simply rebadged Atlas machines, but very different designs. Craftsman Lathe page at Comments on the 10 inch Atlas Lathe Metric threads on the Atlas lathe. the damn thing is designed to break that part. Parts list for Atlas 12x36 inch lathe (6 page PDF) Parts list and quick change instructions (8 page PDF) Atlas Cutoff Tools (2 page PDF) Atlas service bulletins (valuable) Here is a nice discussion of lathe terminology. My Rockwell 10" has instructions for making the shear pins in the manual.*/ĮTA: Ignore everything between the /* */ above I just looked it up in an Atlas manual I have. The shear pin would be at the other end of the leadscrew and is usually even easier to replace. Most lathes in that class have shear pin. I am not familiar with the Atlas/Craftsman lathes but I would hope that it has a better method as a "fuse" for the leadscrew than breaking the bearing bracket. If you have a 4-jaw chuck you could even make it on your lathe. I would fuss and make it from cast iron with bronze bushings.
*It looks like it would be pretty easy to make one from a solid block of cast iron or bearing bronze.
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