Clausing 6300 x 12"

rotormotored

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Hi to anyone out there in Clausing lathe land,
I have a 6329, ... don't know the serial number. I'm having a difficult time trying to get mine back together. I took the headstock apart and I'm trying to put my spindle back in. Not having much luck with it. I've tried heating it and I even made a puller to try to pull the bull gear back towards the bearing. There are key ways that have to be lined up, I know. So if anyone out there would like to try, I'd be glad to ship it to you. I do have someone who says they can fix it but I'm willing to let someone who knows what they are doing go for it.
Ed
 
Yeah I was hoping there would be somebody out there who could help me but I guess not. There just isn't that many of these around. I guess I've got my work cut out for me.
Ed

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I expect that gear is pressed or shrunk on. If you can't move it with your puller, and you're sure it is up to the task, then it likely is shrunk on. That will require a fair amount of heat, then perhaps your puller will move it.

A quick glance through a few Google hits tells me you aren't the only one with this dilemma.
 
Hey Thanks for your reply Tony,
Yes I've contacted a guy out here in Fullerton, Ca. who does this type of work for a living. I'm thinking of just letting him deal with it. But since it's apart like this, I wonder if it would be unwise to NOT replace the bearing. I want to but I don't think I can afford it right now. I really do need to get this back up and running though, ... decisions, decisions.
I guess I better start pricing bearings. I'll see if I can find a pic.
Yes, I found some pics for you. I did try to heat it but I guess I couldn't heat it enough. I figured that it wouldn't need that much heat. Just enough to help it expand just a little. I got kind of close to one of the plastic tubes for the oil pump. I didn't ruin the tube but that made it kind of difficult for me. ..... Maybe I was just a little scared that I would damage it. I started to tighten on my puller but it started to bend. If it's going to be thiis puller, it has to be modified again. I can try to take a picture of it ans post it tomorrow. You can tell me what you think.
Ed

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Real lathe bearings can be a bit costly, so I'd examine them carefully under magnification if necessary to see if it is warranted. Of course, the argument could be made that now is the best time to replace them if necessary, so it might be a good idea anyway.

Forgive me if I mention the obvious, but have to checked for any burrs or dings in the spindle OD? The gear? Can you get accurate measurements of both pieces to see just how tight they are supposed to be? Could it be that there is a bit of surface contamination on one or both parts?

That will be a nice lathe once you get it going.
 
Hey Tony, you got me thinking ... again,
I thought that maybe, just maybe, I should have another look at it. I'd like to double check to if there any burrs or nicks on that spindle or that bull gear. And, I think I wil have a look at the bearing with a 10x magnifying glass, this time.
I also thought I'd improve on my puller assembly.
I think that you are right about needing much heat on that bull gear. I mean more than what can be applied with a heat gun.
I tried it with a propane torch the other day but I think that still wans't enough. I think I am going to have to heat it outside of the headstock and then somehow put in place. Then slide the spindle in and then install the puller. It will take about a minute or so to set all that up.
Now as far the puller goes, I have an idea. I'm going to have to add another piece that will have to go under the spindle, then screwed on to the main piece of the puller. I'll have to draw it up.
Anyway here's some pics of my rig.

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It may sound extreme, but without gussets, your puller/pusher isn't all that strong. Don't be afraid to put a good bit of tension on it with the puller/pusher, then use a dead blow hammer to give it a little shock pressure (whack it good). Just be sure everything is lined up. Really close fits, or interference fits must be perfectly aligned before advancing along a shaft. A wee bit cocked, and you will start galling and you don't want that.

If you think you can work it quickly enough, put the spindle in the freezer for a couple of hours, and apply heat to the bull gear. Be quick, and you might be surprised at how easy it goes. Also, don't be afraid to take a little ScotchBrite to the shaft, and the inside of the gear. You don't want anything there that might pick up a bit of metal from the other member and start a gall.
 
Thanks again for all these great pointers,
I think I will really give it an honest and well planned effort this time. Today I broke it down some more and then about it somemore. Do I really need to take the headstock off the bedways? This is my dilemma right now. I'm beginning to think that I might as well because I want to paint it .... then I thought I should start making plans to completely go through it .... but am I getting ahead of myself.
Question: If you were going to install the spindle like I am, would you do it with the headstock on the bed or off??? It seems to me that it would be easier to leave it on ... or maybe you have experience doing something similar. Once I have the headstock all put back together, I can still remove as one piece and paint it then ... Right?
My apologies for seeming like I'm all over the place but I guess I just need to take one step at a time .....

Yes you are right about my puller/pusher not being strong enough. I saw it flex and then when I loosened it, it went back to it's normal shape. As far as gussets are concerned, I do need to find a way to fab something up and fit it into a small space. I do have a couple of ideas.
But first things first. I do need to get that spindle and bull gear out and I need to inspect the bearing under magnification then decide if I'll be buying a new bearing .... Then we'll see.
Thanks again for sharing your expertise with me sir. I hope you would mind too much if I'm contacting you here as I go. I'll take plenty of pictures so as to document this whole experience .
 
Well I've had a closer look at my spindle bearing and it looks pitted to me. These pictures are not The greatest but I think anyone who looks at it can tell. I'll post the pics and you all can weigh in and tell me what you think. I still have the bearing on the spindle because I don't have an arbor press tall enough to press it off.
I found a long piece of scrap aluminum approximately 3/8 thick and cut out a section just wide enough to wrap around the O.D. of the spindle so it sits on the inner race of the bearing. I'll have to hunt down a friend of mine who has a good size hydraulic press and see if he'll let me use it.
I hope some you do will give me some input on this. I think there will be a general consensus on this decision to replace the bearing.

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If it were mine, I'd replace the bearings. That roughness will eventually show up in your finishes. Take your time, find a press suitable and do the job right. It won't be easy, but it will be worth it.
 
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