Drill Press Repair Question

D

Dagr

Joined
Jan 25, 2006
Messages
76
I have a generic asian 14" drill press, one of the ones you see in different paint from HF, Grizzly, etc...

After a year and a bit of very light use the quill wobbles. My holes are coming out oval or tri-lobed, and noticeably off center. I took the chuck off earlier today to have a quick look. When running with the quill retracted it looks very slightly off center. With the quill fully extended it is very obviously off center - by as much as 1/4 " .

The question is, can I fix this by replacing the ball bearings? (The one on the bottom of the quill is a 6205-rv, I think) or is this something like the casting being off right from the get go? I've really used this thing so infrequently before now, that it could have been doing this since I bought it, and I just didn't notice.

Any advice appreciated. I haven't gotten the whole thing apart yet, that's what christmas eve is for :OD

Later, everyone

~ Dagr
 
The cost of ball bearings is very inexpensive, so replacing them isn't a huge cost outlay to find out if that is your problem.
 
Look at the chuck as well,the jaws are ver soft on some of the cheap drills and if a drill has spun in the chuck they will no longer touch when closed .
 
Have you checked the side pklay in the bquill? Perhaps all that is necessary is to take up the play by tightening those nuts on the end of the spring. With the problem you are having this could be a very possible answer. Hope this may help. Frank
 
I had the same problem with mine....replaced the bearings and all was well again. I caused the problem by trying to use the press for light milling which ruined the bearings.
 
Alright, I'm going to do some disassembly and see what I can find. Thanks for the info guys.

~ Dagr
 
The chuck on my Grizzly was .020 out of concentric out of the box...I called them and they shipped another chuck and taper adapter out like it was a fairly common occurance! go figure...so I'd also say check both! Bill A.
 
check your bearing runout with a dial indicator, mounted to the quill, the check your quill deflection by mounting your dial indicator to the drill table and seeing if it moves when you put pressure on it. probably bearing or chuck/taper issues, but never hurts to check quill deflection as well
I had real problems with my sears craftsman 17 inch drill press, first the taper then the chuck after a year of arguing with sears service department because of course all of this 'wasn't covered by the warantee' I finally got a genuine Jacobs brand chuck and a genuine jacobs brand taper and my problems went away. Sears power tool are the same chi-com sh-t as H-F.
-Page
 
Well, I got to the parents' place, and spent an hour fiddling, before my brother and I had to go to the airport to pick them up.

It looks like the chuck is ok ( I do not have a dial indicator, I'm eyeballing everything here) and the bearings are pristine. The quill itself deflects when extended.

So I pulled everything apart. The quill is fairly sloppy where it rides inside the housing. There is no real support for it. There is one screw with a point on it that rides a v-groove channel down the length of the quill. If I tighten that sucker right down the visible play disappears... but extending or retracting the quill is jerky and coarse, as the screw point is pressing tightly against the quill.

I'm stumped.

~ Dagr

ps. Happy Holidays to everyone!
 
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