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Jet 1440 headstock issues

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Forum topic by Travis659 posted 07-19-2020 04:43 PM 404 views 0 times favorited 5 replies Add to Favorites Watch
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Travis659

2 posts in 230 days


07-19-2020 04:43 PM

Topic tags/keywords: jet 1440 lathe issues

So I’ve had my jet 1440 a little over 6 months now, I’ve been back and for with jet trying to get a straight answer on how much play should be allowed in a headstock.

Gif of headstock play:
https://gfycat.com/unlinedwarlikebass

I’ve had a lot of issues I believe stem from this causing vibrations and balance issues. Anyone else have this lathe and have play? Or just In general. What’s the rule on headstock movement?

I’ve searched high and low on the internet and the lathe manual and can’t find anything pertaining to allowable movement for it.
Thank you


5 replies so far

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MrUnix

8427 posts in 3212 days


#1 posted 07-19-2020 07:34 PM

Looks like you need new bearings. Did yo buy the machine new or used?

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Travis659

2 posts in 230 days


#2 posted 07-19-2020 07:49 PM



Looks like you need new bearings. Did yo buy the machine new or used?

That’s the thing, not only is it brand new, but it’s not the spindle that moves. It’s the entire head. I’ve turned oval tendons before and didn’t know that was possible

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MrUnix

8427 posts in 3212 days


#3 posted 07-19-2020 08:18 PM

That s the thing, not only is it brand new, but it s not the spindle that moves. It s the entire head. I’ve turned oval tendons before and didn;t know that was possible
- Travis659

LOL – yeah, your headstock should not be moving like that. From the manual, it looks like it is only held on by the one bolt that pulls it down against the bed. Is the adjusting nut (part #35) tightened correctly? If it is, then I’d yank the headstock off and check the machined surface where it mates with the index plate and lathe bed looking for a machining or casting defect that is preventing it from sitting completely flat. I’m surprised Jet hasn’t been more helpful.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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j1440

21 posts in 732 days


#4 posted 07-21-2020 12:57 AM

I have a 1440 and had to de-burr & reseat the stepped washer that locks it to the bed—it has worked great since

-- Jim, Kingman, Az

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splintergroup

4712 posts in 2235 days


#5 posted 07-22-2020 05:54 PM

Yep, I’ve seen many a lathe with that type of issue. Can you see the bottom of the headstock also moving against the bed?

Always seems a good idea, especially for newer tools, to check out the locking mechanisms (bolts/washers.clamping surfaces) for poor QC. Occasionally there will be debris in the bottom of the bolt threads in the headstock that prevent the bolt from completely tensioning, but dollars to doughnuts Brad and Jim’s solutions will get you up and turning!

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