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can this chuck be saved?

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Forum topic by Sawdust2012 posted 11-27-2013 10:34 PM 814 views 0 times favorited 7 replies Add to Favorites Watch
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Sawdust2012

93 posts in 1173 days


11-27-2013 10:34 PM

I dont know the technical terms, so bear with me. Using a drill chuck to make boittle stoppers, when the part that has the jaws and the part you turn to adjust the jaws CAME OFF! Had to move the live center in the tailstock to work of the top. When I did, the chuck started vibrating and, again, CAME OFF! I dont know enough to know if I am doing something stupid, or if the chuck is broken.


7 replies so far

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JustJoe

1554 posts in 1499 days


#1 posted 11-27-2013 11:11 PM

If you can you give us something more technical than “the part that has the jaws” and “the part you turn to adjust the jaws” we might be able to narrow it down a bit faster. A pic would make guessing even easier.
Is it keyed or keyless, what type of chuck, brand/size etc.?
It might be something as simple as the chuck itself came off the shaft.

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Sawdust2012

93 posts in 1173 days


#2 posted 11-27-2013 11:28 PM

i cant find any name on the chuck. I looks as if the busness end of a power drill fell off of the shaft that goes into the headstock. I have tried to download a pic but not having any luck

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JustJoe

1554 posts in 1499 days


#3 posted 11-27-2013 11:37 PM

Well I’m cooking dinner, and it’s chilly out, and I’m just too lazy to go to the workshop. So here is a pic from the junk I have in the kitchen:

Now, before the breakdown did your chuck look something like the top piece?
If so, does it now look like the bottom piece, but with some other piece stuck in the lathe or laying apart separately?

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Sawdust2012

93 posts in 1173 days


#4 posted 11-27-2013 11:54 PM

exactly! you must have one interesting kitchen

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JustJoe

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#5 posted 11-28-2013 12:04 AM

It’s not as bad as it once was – I can see the dining room table now.

All you did is separate the chuck from the shaft. There are three possibilities:
1. You snapped it off. Probability is about 0 in a bajillion. That just doesn’t happen. You’re not strong enough and your lathe isn’t big enough.
2. It came unscrewed. If you look in the bottom of the chuck (right hand side of bottom piece in my pic) you’ll see the screw threads, and the piece that was left in the lathe will have threads. Probability there is about 1 in a million. It’s just too obvious and even someone from Michigan would have noticed something so simple before asking on the forum.
3. It’s a tapered fit and it just came loose. If you look in the bottom of the chuck it might have a slightly tapered recess. The shaft that was left on the lathe might have a slightly tapered end piece that goes in. It’s a friction fit and if the chuck or shaft is cheap, or damaged, or rusty, dirty, oily etc then it won’t seat perfectly and the lateral force you put on it with the lathe will pop the two pieces apart.

If that’s the case, you should be able to clean both pieces and reassemble – just tap with a rubber mallet or deadblow until it sticks.

Google “drill chuck” and then, when the results come up, click on the word “images” up top. You’ll see lots of pics of them assembled and in pieces.

If you can’t get it to seat properly and stay seated then you might think about upgrading to a new chuck meant for the lathe. One with a threaded connection will never come apart on you.

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JustJoe

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#6 posted 11-28-2013 12:07 AM

Just let me add before my pot pie is ready –
The drill chucks with the tapers really aren’t made for the side forces you get when using them in the headstock of a lathe. They’re fine in the tailstock when you want to drill a hole or hollow out a piece. If you’re going to be using one for holding the work in the headstock then buy one made for that purpose. If you google/bing/yahoo “drill chuck for lathe headstock” you’ll find some reasonably priced ones.
Good Luck

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Sawdust2012

93 posts in 1173 days


#7 posted 11-28-2013 02:40 AM

thanks…you have been tremendously helpful

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