Drill chuck kept falling out

  • Advertise with us
Blog entry by dustyal posted 08-08-2009 08:43 PM 4678 reads 0 times favorited 8 comments Add to Favorites Watch

I was drilling a hole to attempt a method of mounting shop vac attachments. Used a hole drill I picked up at Harbor Freight real cheap. The hole saw worked okay… not the best grant you, but okay… the bigger issue was that my drill chuck fell off of its shaft. I was using my Delta bench top drill press and the chuck is a pressed on fitting. I cleaned up the conical shaft and the inside of the chuck to assure real clean… no oil or grease. Went back to drillin’ and it slipped off again. Did that a couple of more times before I got good and aggressive with a light sledge hammer. That seemed to do the trick.

I am happy with the Delta… fine for my small shop. I think the chuck was originally packed in grease, and with use, it lubricated itself off. That, and the 2 inch hole saw did get it in a bind of some kind.

Point being, how do folks store their shop vac hoses and accessories? HELP!!! The snake keeps wrapping around my leg. Surprised that I had a hole saw that fit just right. I’ll attempt some kind of mounting… where I can slip it in and out and the stuff won’t fall over or out. I don’t have much space in my shoppette…

Oh, congratulate me, I discovered the wheel…. ! My first one… ahhh…. lol

Shop vac hose rigid

Shop vac mounting

-- Al H. - small shop, small projects...

8 comments so far

View a1Jim's profile


117063 posts in 3544 days

#1 posted 08-09-2009 04:42 AM

get a bigger hammer and you did

-- wood crafting & woodworking classes

View Karson's profile


35111 posts in 4367 days

#2 posted 08-09-2009 05:20 AM

Hammers are great for that problem.

-- I've been blessed with a father who liked to tinker in wood, and a wife who lets me tinker in wood. Southern Delaware soon moving to Virginia †

View GEORGE6149's profile


32 posts in 3564 days

#3 posted 08-09-2009 10:58 PM

I had the same problem with my craftsman floor model drill press.I sprayed the chuck with wd40,used a composite hammer,persuaded it on. Never fell off again.Wd lubed enough for the chuck to be driven in a bit further


View ajosephg's profile


1880 posts in 3528 days

#4 posted 08-10-2009 02:58 AM

I think you ought to have some lube (WD40 or equiv) to keep the surfaces from oxidizing and seizing in case you ever need to remove the chuck for whatever reason.

-- Joe

View dustyal's profile


1293 posts in 3442 days

#5 posted 08-10-2009 04:04 AM

Yeah, I wasn’t sure of my mechanical engineering experience… of which I have NONE… I thought I had recalled that no lube… i.e. clean was the answer for this type of fitting.

Okay, after half hour of looking around my well organized file system I found the manual. It’s amazing what you learn by reading the book. NOTE: Make certain that the spindle taper and tapered hole in the chuck are clean and free of grease, lacquer, or rust prevention coatings. It goes on to say use a rubber hammer/block of wood and light tap. (I did the “heavier” tap… maybe a rap… or a knock… a whack perhaps, but not a tap. lol )

I thought WD-40 might have been the culprit since I had squirted some on awhile back to get the chuck to spin a little easier to open and close; then the WD40 got spun on its way to the shaft. Don’t know… best answer… use a bigger hammer.

-- Al H. - small shop, small projects...

View ajosephg's profile


1880 posts in 3528 days

#6 posted 08-10-2009 04:07 AM

Hmm – learn something everyday.

-- Joe

View Steven Naslund's profile

Steven Naslund

12 posts in 3468 days

#7 posted 08-11-2009 08:48 PM

Here is a machinists trick for mounting the drill chuck. Get a block of wood, retract the jaws up into the chuck so that they don’t touch the wood block. Use the quill on the drill press to force the chuck down into the block of wood. This will seat it safely and help get it in straight so that it does not runout too much. I don’t think the WD-40 would be a problem since we wiped tapers with oily rags all the time. I would look more for dirt or dust.

-- Steven Naslund, Chicago IL

View dustyal's profile


1293 posts in 3442 days

#8 posted 08-11-2009 09:40 PM

Thanks Steve. Actually the first couple of tries I went with the block of wood and the quill press method as in gentle persuasion. After third attempt I got out the cleaning stuff and the really big hammer. Pressed it on with the quill first, then whacked it using a block of wood and hammer. It’s been okay since…. seems to be square and straight, but I don’t have a precise gauge to measure. I need to pick up a digital run out caliper.

Having said that… I had the chuck working smooth as far as spinning the jaws open and close. Now it binds again as it did when I first set it up out of the box. I did have the jaws up and out of the way when I reseated the chuck… Other owners have had similar problem with the chuck binding a little. Not serious, just a minor inconvenience, irritant.

-- Al H. - small shop, small projects...

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics