Bought the wrong 3/4" lead screw assembly for my 12" craftsman - looking to trade

[nwarcade]

Hi All,
I've been trying to revive an old craftsman 12" lathe and picked up this lead screw assembly to replace a bent lead screw and a broken bearing on my project. I didn't pay close enough attention and purchased a 3/4" lead screw when I needed a 5/8". Just looking to salvage this purchase and swap for the correct part.

Thanks All,
Nw



Craftsman 12" Metal Lathe 3/4" Diameter Lead Screw 39 7/8" Long for a 42" Bed.
lead screw gear case with bushing bracket assembly for a Craftsman 12" lathe with 3/4" lead screw. Gear case is part number L3-27.
lead screw bearing with mounting bolts for an Atlas 10" or 12" or Craftsman 12" lathe with 3/4" lead screw. Bearing is part number 10F-16.

 

[wa5cab]

FYI, although the right bearing is the same, and the diameter and threads are the same, the 3/4" leadscrew that you have is an L5-35-5-42A. It will fit the 12x24 101.07403, 101.27430 and the 12x24 1/2" bed 12" machines made between 1957 and 1967. But it is 1-13/16" too short to fit a 10x24 10F which is 41" LOA..

On the other hand, you can use the 5/8" lead screw from any 12x24 Craftsman 12" from 101.07402 back to 101.07360. Plus with modifications (shortening the left end), one from any 10x24 10D or earlier.

 

[nwarcade]

Thank for adding the detailed info. Hopefully someone will come along with the parts I need that can actually use these parts.

 

[wa5cab]

You're welcome. The only downside to cutting off a longer lead screw to use on a shorter bed lathe is that if it's a 5/8" one, the threads will run out to the end so they don't fit into the left bearing assembly or into the FWD/REV gearbox as snugly.