Help with this chuck

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Forum topic by Paul posted 12-20-2011 10:16 AM 876 views 0 times favorited 5 replies Add to Favorites Watch
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224 posts in 3450 days

12-20-2011 10:16 AM

I need to change the bearings in this assembly but I’m not sure how to take it apart.
It’s off an older Delta press. Looking down the top there was a C clip I was able to get off. I tried to knock the shaft down but id didn’t seem to move. I believe there is a way to separate the chuck from the quill ( I believe it’s called) but I am not even sure where the chuck ends and the quill begins. I’ve opened the chuck all the way and there is no screw in the inside of the chuck. above the chuck there is a collar with three holes in it. above that there is a compression pin in the next hole.
Thanks in advance.

5 replies so far

View Tedstor's profile


1643 posts in 2630 days

#1 posted 12-20-2011 10:35 AM

I have an old school craftsman with the same chuck.
The collar above the chuck is threaded. You need to screw the collar left to right which will force off the tapered chuck. Use a pin punch and a hammer to get the collar loosened.

View Paul's profile


224 posts in 3450 days

#2 posted 12-20-2011 10:47 AM

My error, it is a craftsman press.
ok so to be clear the collar is the one with the three holes. I have to get that to turn left to right. are there locks or anything in the three holes that will stop this from turning?

View IrreverentJack's profile


727 posts in 2841 days

#3 posted 12-20-2011 06:06 PM

View Paul's profile


224 posts in 3450 days

#4 posted 12-20-2011 06:31 PM

I was able to spin the collar to spin on its threads. the threads are normal direction. I can spin it all the way up and away from the chuck until it passes the last thread and I had to tap it the other way and spun it down towards the chuck which I though would force the chuck down but the threads finished and it passes the threads that way as well.
Do I have to place shims below the collar for more leverage and more force against the chuck?
The link above is a different setup than what I have.

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224 posts in 3450 days

#5 posted 12-23-2011 05:04 PM

Ok figured it out.
With the collar down I had to shim off the chuck.
Now to figure out how to clean out the chuck.

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