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Machine Shop and Tool Talk

Logan Lath Cross Feed Screw


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  #1  
Old 04-03-2019, 03:05:23 PM
Rod in MN Rod in MN is offline
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Default Logan Lath Cross Feed Screw

Hi I have a Logan lathe my problem with the Cross feed screw i have lot of play in it? I can screw it in and out buy i can turn about 1 turn. I can not see how to take up all the play

Any ideas would help

Thank You
Rod in MN
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  #2  
Old 04-03-2019, 03:34:27 PM
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Default Re: Logan Lath Cross Feed Screw

Call Logan. I bet they'll sell you a new screw and nut for it.
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Old 04-03-2019, 04:14:27 PM
dalmatiangirl61 dalmatiangirl61 is offline
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Default Re: Logan Lath Cross Feed Screw

I do not think there is any way to take out the slack, and a full turn is getting excessive. Most likely you need a new brass nut, you need to pull screw and nut and determine which needs replacement, my money is on the brass nut. Your options are brand new from Logan Actuator, used from ebay, or make one, not that hard but you might need a LH square thread tap which costs as much as a used brass nut.
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Old 04-03-2019, 04:35:13 PM
Big Bird Big Bird is offline
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Default Re: Logan Lath Cross Feed Screw

The Practical Machinist website has a thread about making nuts from delrin rod
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Old 04-03-2019, 04:54:49 PM
b7100 b7100 is offline
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Default Re: Logan Lath Cross Feed Screw

I tried the delron nut thing. It worked (kind of). A lot better than what it was. You don't have the rigidity. I ended up buying new off Ebay. Nut and cross screw were over $900 including shipping from UK. Clausing/Colchester's price $1600. Depending on what it is it can be made although It's hard to replicate original precision hardened and ground threads. If you just replace the nut you might find the screw is worn in one spot causing tight spots when in use. Best thing is new if you have the $.
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Old 04-03-2019, 05:15:23 PM
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Default Re: Logan Lath Cross Feed Screw

Here ya go Rod. http://store.lathe.com/compoundrest.html
Its pretty neat that you can get new parts for something that old.

Or if you want to cheap out for a temporary repair, coat the screw threads by melting candle wax on them. Pack the nut with Devcon A or JB weld and run the screw into it about the depth of the nut. Once cured, heat the nut a bit to melt the wax and back the screw out. As mentioned, the fit will be looser in the area of the screw that's worn the most.
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Old 04-08-2019, 01:39:05 PM
gvasale gvasale is offline
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Default Re: Logan Lath Cross Feed Screw

If is an Acme threaded rod there are plenty of sources for both RH & LH. the business ends can be machined for your needs. Repaired an old LeBlond that way.
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Old 04-09-2019, 04:48:20 PM
Rod in MN Rod in MN is offline
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Default Re: Logan Lath Cross Feed Screw

HI, Guy's I checked the Acme Threaded and the nut that all is tighten? I have the wheel off the shaft . there is a big nutthat screws in the bed then its the with all the little lines on it . Now i'm not sure is there a thin lock nut then the wheel (crank) and a nut to hold it on


Is there a easy was to post pictures on to and forum ?? I'm lucky to get on to a forum ? Son is off to school and he has Apple so its all diffident


Thank You All
Rod in MN
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Old 04-09-2019, 05:09:04 PM
b7100 b7100 is offline
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Default Re: Logan Lath Cross Feed Screw

On my lathe there was a thrust bearing and a locking nut that preloads that thrust bearing. The locking nut came lose and created the same effect as if the cross feed nut and screw was worn. Check both ends of the acme screw and make sure nothing is lose.
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Old 04-09-2019, 06:16:21 PM
dalmatiangirl61 dalmatiangirl61 is offline
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Default Re: Logan Lath Cross Feed Screw

It would be best if we could see pics, I know there is a post or 2 on here with good step by step instructions, please search for it, or maybe someone can provide a link. Your other option is give us a model# and hope one of us has the same model and can help. I'm out since my Logan is 2 days away and I forget how it came apart 3 -4 years ago
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Old 04-10-2019, 04:59:20 AM
muckalee muckalee is offline
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Default Re: Logan Lath Cross Feed Screw

attachmentid=332419&stc=1&d=15548866496649[/url]
Yep pictures can be added
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  #12  
Old 04-14-2019, 03:57:29 PM
Rod in MN Rod in MN is offline
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Default Re: Logan Lath Cross Feed Screw

Quote:
Originally Posted by muckalee View Post
attachmentid=332419&stc=1&d=15548866496649[/url]
Yep pictures can be added


I know that pictures can be add to the forum but I don't know how to do it

Thank You
Rod in MN

---------- Post added at 02:57:29 PM ---------- Previous post was at 02:45:42 PM ----------

The lathe is a Montgomery Wards Turing Lathe. Model # 54TLC-2130 Serial# 8081.

Would anyone have a parts brake down of how the Cross Feed Screw Parts go in order ?? To see if i'm missing a thrust bearing or washer ??

Looking for a Parts Manual, Service Manual that i can down free??

Would anyone have a extra Feed Screw drive gear i'm missing one

Thank You
Rod in MN
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Old 04-14-2019, 05:45:00 PM
dalmatiangirl61 dalmatiangirl61 is offline
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Default Re: Logan Lath Cross Feed Screw

You might find something on vintagemachinery.org , but most likely you will need to purchase one from Logan Actuator. Logan Actuator can also provide you with parts should you need them, don't be cheap, toss the guy a bone
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Old 04-15-2019, 08:23:49 AM
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Default Re: Logan Lath Cross Feed Screw

http://store.lathe.com/compoundrest.html

Clicky and be happy.
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Old 04-15-2019, 09:40:32 AM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: Logan Lath Cross Feed Screw

I find the easiest way to post pictures is to take them with my phone, email them to myself in the medium size. Open the picture in email, save it on your computer. At the bottom of your post you will see "go advanced", click on that, go to manage attachments and ad your pictures.
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