Finally finished refurbishing lathe !

sasanifab

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Oct 3, 2020
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I purchased a supermax 1338 about a year ago, I paid more than i should but I was excited and was being stupid. This particular lathe was built in 1988, when I got it home the lathe wouldn’t go into forward and it had a bent pinion gear in the apron. Luckily the guy who sold me the lathe had another supermax and I swapped the apron. Prior to this I had a 10 inch Southbend so I had little to no machining experience. A part of me is glad this all happened as it forced me to learn and get out of my comfort zone. The first thing I did was realize the person who sold me the lathe installed a non reversing contacter which is why it wouldn’t go into reverse, so I installed one and upgraded the transformer. That’s when I realized the hinged roller switches were bad , so those were replaced. That’s when I tackled the apron, I found a similar 13 tooth pinion gear and machined it to fit, machined a grizzly crossslide to fit , lead 1/2 nut , cross feed nut and screw and worm gear Lastly, replacing the tailstock Acme flange nut. For those of you who have a supermax or similar ....
7/8-8 acme 1/2 nut
5/8-8 acme cross feed
5/8-10- tailstock nut
Cross slide from 14 inch grizzly will fit with some machining, The worm gear setup also fits. This is all from the G0824 lathe
 

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matthewsx

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Jan 2, 2019
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One of the best parts of working on a lathe is using the lathe to make the parts you need to fix it:grin:

John
 

sasanifab

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Oct 3, 2020
Messages
50
Nice work! That lathe should run like a clock
-Mark
It runs flawlessly with little to no backlash, I know people say using a lathe with a dro makes backlash irrelevant, I would disagree . I had so much crossfeed back lash that the force applied to the workpiece would push back the cross slide, the lead screw nut was so worn I couldn’t trust that the position would be the same. Now I want a beefier lathe, something more rigid. This lathe weighs around 1700lbs. I want something that can do metric and standard threading , over 14 inch swing and heavy
 

sasanifab

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Not the best .... but it works
 

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