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Replacement For Obsolete Delta 14-650 Chuck Key

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Blog entry by BinghamtonEd posted 07-01-2015 11:55 AM 2738 reads 4 times favorited 14 comments Add to Favorites Watch

My main reason for posting this blog is in the hopes that if, someday, someone is looking for a replacement chuck key for their Delta 14-650 mortiser, they can avoid the frustration of trying to find one that will work. This solution works for a 14-650 Type 2 mortiser, I cannot guarantee it will work for Type 1 mortisers (see below about those).

The Delta 14-650 chuck key has been marked as obsolete, and is unavailable for order from Delta or any of the other part replacement sites I could find. The chuck manufacturer is “Select” and it is a 3/8” chuck with a odd-sized small pilot for the chuck key.

I recently got a great deal on one of these mortisers, but it was missing the chuck key. Normally, I would remove the chuck and bring it to the store, and try to find a match, however the bit and chisel were still installed, which would make removal of the chuck impossible without destroying the bit and chisel.

The pilot for the chuck key measure 13/64”. There are chuck keys available in stores that have this pilot, however they’re all designed for 1/4” chucks, and the 14-650 has a 3/8” chuck. The teeth on these chuck keys do not come close to touching the teeth on the chuck.

I had found a post by a fellow LJ’er that stated that a certain Black & Decker chuck key (p/n 621400-00) happened to fit, available from ereplacementparts.com. Since I happened to be placing an order for a couple parts for a different tool, and it was only a few dollars, I ordered one. It did not come close to fitting. I ground down the pilot and the teeth still did not engage. The other LJ’er had a Type 1, and claimed it fit, so perhaps there is a difference in the chuck. I don’t have a Type 1 so I don’t know.

After a couple failed attempts, I found the solution that does work. The Jacob’s 1/2” chuck key, with the 1/4” pilot (p/n 30251) has teeth that will engage the chuck on the mortiser. The pilot is too large and must be ground down, this took me about 10 minutes. I place the chuck key in a vise and used some linesman pliers to wiggle out the pin. I placed the chuck key in the chuck of my drill press, and set it too its highest speed (3100 RPM). The chuck keys are pretty hard, so instead of a file I used a large angle grinder wheel instead (not on the angle grinder). It’s pretty slow-going, but eventually the pilot is the correct size. I held a file to it just to remove the majority of the grinding marks.

Summary : If you need a new chuck key for your 14-650, buy Jacob’s 30251, and grind the pilot down. Total cost was $3 (not including my 2 other failed attempts with incorrect-sized chuck keys).

-- - The mightiest oak in the forest is just a little nut that held its ground.



14 comments so far

View CB_Cohick's profile

CB_Cohick

460 posts in 714 days


#1 posted 07-01-2015 12:44 PM

Thanks for this post. I also bought a type 2 mortiser off of Craig’s List recently. Fortunately, mine still has the chuck key, but they have a way of wandering off. It is good to know there is a workable solution for that problem.

-- Chris - Would work, but I'm too busy reading about woodwork.

View BinghamtonEd's profile

BinghamtonEd

2281 posts in 1832 days


#2 posted 07-01-2015 01:10 PM

I’m just happy I didn’t have to replace the entire chuck (an consequently my 1/4” chisel/bit). I’d be shocked if at some point I myself wasn’t back referencing my own blog because I’d lost the key.

I did find that I wish the key was longer, the leverage pin in pretty much right up against the housing. Another 1/2” would be nice, but it works, I do the final tightening with a flat-head screwdriver in the top of the machine to keep the shaft from rotating.

-- - The mightiest oak in the forest is just a little nut that held its ground.

View kiefer's profile

kiefer

4881 posts in 2130 days


#3 posted 07-01-2015 03:29 PM

Good find and solution !
You could simply extend the shaft with a sleeve to move the handle outward .

-- Kiefer https://www.youtube.com/user/woodkiefer1/videos

View BinghamtonEd's profile

BinghamtonEd

2281 posts in 1832 days


#4 posted 07-01-2015 03:38 PM



Good find and solution !
You could simply extend the shaft with a sleeve to move the handle outward .

- kiefer

That’s a good idea. I’ll have to measure the OD of the chuck key and see if I can find something around the same size. I bet if I can get something close, a good amount of JB weld would do the trick.

-- - The mightiest oak in the forest is just a little nut that held its ground.

View pintodeluxe's profile

pintodeluxe

4854 posts in 2276 days


#5 posted 07-01-2015 05:40 PM

I assume the Delta 14-651 chuck key doesn’t fit? If so that’s too bad, as it has an allen wrench on one side for tightening the hollow chisel too. That may be obsolete as well. For others looking to source this part, try Rikontools.com Their 34-250 mortiser is identical to the Delta benchtop mortiser.

Good fix.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View BinghamtonEd's profile

BinghamtonEd

2281 posts in 1832 days


#6 posted 07-01-2015 05:56 PM

From what I could gather online, it does not fit. I couldn’t find anywhere that anyone had stated it did, and there was no documentation that said the obsolete part had been superseded by the 14-651 key. The chucks themselves look different between the two, also.

Also, the 14-651 key is around $25 shipped, and I had an old set of cheap T-handle allen wrenches that were gathering dust, so I dedicated the correct one to the mortiser.

-- - The mightiest oak in the forest is just a little nut that held its ground.

View GusStick's profile

GusStick

1 post in 515 days


#7 posted 07-14-2015 03:45 AM

Worked like a charm! Thanks for posting!

View BinghamtonEd's profile

BinghamtonEd

2281 posts in 1832 days


#8 posted 07-20-2015 07:19 PM

Wow, I wasn’t sure anyone out there would ever need this information. Glad it helped you out!

-- - The mightiest oak in the forest is just a little nut that held its ground.

View campbellsm's profile

campbellsm

1 post in 441 days


#9 posted 09-22-2015 04:29 AM

The same exact thing happened to me too…I got a good deal on a Delta 14-650 T2 that did not have a chuck key and already had a chisel installed. As it became more apparent that I would have troubles finding a replacement key for it, I, like you, realized I would have to somehow trim the radius of the pilot of a key whose gears would reach/mesh with the chuck teeth. Your idea of putting the chuck key in the drill press and using a grind wheel worked great. And yes, your post helped yet another…I signed up with LJ just to be able to say thanks.

View BinghamtonEd's profile

BinghamtonEd

2281 posts in 1832 days


#10 posted 09-22-2015 12:47 PM

Thanks for the feedback, Campbell. Welcome to Lumberjocks, you should stick around!

-- - The mightiest oak in the forest is just a little nut that held its ground.

View 43Nels's profile

43Nels

1 post in 186 days


#11 posted 06-03-2016 12:37 AM

I did your grinding fix; and, of course, ground just a little too much so the pin was a little sloppy, but worked. I then picked up a used Grizzly Jointer, got on their website to order a couple things for the jointer and saw they had a chuck key with a 7/32” pilot. I just got it today and it fits the mortiser, no grinding needed and the pin fits good. Grizzly item no. G8661, $4.25 each. shipping will about triple that price if that’s all you order.

I just signed up to be able to let you all know of this, and I also seem to end up here looking for reviews of equipment and such.

View BinghamtonEd's profile

BinghamtonEd

2281 posts in 1832 days


#12 posted 06-03-2016 12:33 PM

Good to know that there’s an off-the-shelf solution out there. Would certainly be easier (although I’d make sure to order some other as well stuff to feel better about the shipping costs). Thanks for sharing.

-- - The mightiest oak in the forest is just a little nut that held its ground.

View KJOffice's profile

KJOffice

1 post in 179 days


#13 posted 06-10-2016 05:11 AM

When someone long ago said that a blind squirrel even will find an acorn once in a while. This time it was an old man who lost somewhere in a move the chuck key for his Delta 14-650. Then while floating the net and finding Delta has discontinued this item with no alternative other that a $60+ purchase of new chuck and key and like a blind man in the woods that stumbles over a log I found a gentleman and scholar who worked out the problem. The drill press and grinder will work fortunately have a small milling machine purchased from China but at least the lathe chuck is not as wobbly as the 25 year old drill press however using a proper fitted cutting tool helped make the pilot problem workable. Great huge thank you to Binghamton ED for your posting. Now for what I learned. Went to LOWES in local mall to get the 30251 found they only had ONE and that will be the last for Lowes will not be stocking chuck keys when what they have in store right now are gone no more will be stocked. Guess they expect all tools to come with keyless chucks in the future. Appears the keyed chucks is going the way of the horse and buggy. Best I lock down all my many chuck keys in a safe location.

View BinghamtonEd's profile

BinghamtonEd

2281 posts in 1832 days


#14 posted 06-10-2016 12:20 PM

Glad this worked for you KJ. I wasn’t aware that Lowes was discontinuing their in-store stock of the chuck keys. I know my local True Value and Ace carry these, I bet they’ll continue. Amazon would be an option if you had a prime membership, or a wife that likes ordering enough to get free shipping (like mine). But, there’s always 43Nels suggestion of the Grizzly chuck, which it looks like would be under $20, which isn’t bad either, compared to a new chuck.

I’ll just try really, really hard not to lose this chuck key. They seem to just walk off on their own, though.

-- - The mightiest oak in the forest is just a little nut that held its ground.

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