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Tool Talk Discussion Forum

Atlas drill press chuck

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Tye

04-20-2004 17:19:06




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I was trying to drill a hole today when the entire chuck fell off my old drill press. The funny thing is, there's no key or set screw to old the male end (drill press) into the female end of the chuck. It looks as though it was once pressed in and that was it. Does anyone have any suggestions as to how I could reattach the chuck to the drill press? Thanks for any help.




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John in MA

04-20-2004 19:40:42




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 Re: Atlas drill press chuck in reply to Tye, 04-20-2004 17:19:06  
Make sure the taper is very, very clean and free of oil. Also check to make sure there are no burrs or scratches. It should stay on just fine if everything's in good shape.



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Davis In SC

04-20-2004 17:42:53




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 Re: Atlas drill press chuck in reply to Tye, 04-20-2004 17:19:06  
The chuck uses a self-holding Jacobs taper. Try cleaning both male & female parts well , making sure there are no burrs or scored areas, then using a wood block to protect chuck, give it a good tap with a hammer to re-seat it. If it stil comes off , you can resort to a few drops of Loctite in the taper, but bear in mind it might be impossible to remove then. Regards, Davis



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wdTom

04-20-2004 18:25:58




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 Re: Re: Atlas drill press chuck in reply to Davis In SC, 04-20-2004 17:42:53  
What I have done is to drill a hole up through the chuck, maybe 3/16", and drill and tap the end of the spindle for a 10-32 screw to hold the chuck on. To remove, tap the hole in the chuck out to 1/4-20 and screw a 1/4-20 screw in to pull the chuck off. Loctite can only help.



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Charles (in GA)

04-20-2004 18:23:32




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 Re: Re: Atlas drill press chuck in reply to Davis In SC, 04-20-2004 17:42:53  
Tye should consider himself lucky that he can get the chuck off the arbor. I bought a 18N Jacobs 3/4 chuck to go in my 20" drill press (the factory chuck is undersize for the press) and the used 18N I bought had a 4JT/3MT arbor already in it, after trying to seperate the two (being careful not to damage the chuck) I gave up and installed the chuck in the drill press (which used a 3MT luckly) I had wanted to seperate the two so I could ocassionally use the chuck in the tailstock of my mill/drill/lathe unit. Guess I'll buy another chuck for it.

Word to the wise, before you try to seat the chuck on the arbor, retract the three jaws up into the chuck body, that way you are not putting any stress on the jaws and the mechanism that operates them, but you are striking the body of the chuck directly with the block or leather mallet. If the taper on the arbor and the chuck is clean and dry and undamaged, they should stay together with no problem.

Charles

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Tye

04-20-2004 17:53:36




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 Re: Re: Atlas drill press chuck in reply to Davis In SC, 04-20-2004 17:42:53  
Davis, Thank you for the response, I tried hitting it on a couple of times, I think I might try the lock tight method. Thanks again. Tye



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