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[kjones]

I don't want to make it sounds like Jacobs are lower quality, because they are one of the best.  Rohm just has something special with the couple of models that DeWALt chose to use in the DCD970/950 18v models, as well as all of the new 20v MAX models.  You will find though that most major drill brands use Jacobs chucks, and a lot of Jacobs models are really great products, but they have sum sub-par models as well.  I'm sorry that this probably made it even more confusing than before, but it is what it is!

[anadevi]

I thought all of the 3-speeds were using Rohm chucks, with the compacts using a Jacobs. My DCD785 is a Jacobs and the DCD985 is Rohm.

I much preferred the self tighting Rohm (XRP) over the rachiting Rohm (20V Max). I've not had a bad experience with either, but most of my tools with Jacobs chucks use a key.

I don't want to make it sounds like Jacobs are lower quality, because they are one of the best.  Rohm just has something special with the couple of models that DeWALt chose to use in the DCD970/950 18v models, as well as all of the new 20v MAX models.  You will find though that most major drill brands use Jacobs chucks, and a lot of Jacobs models are really great products, but they have sum sub-par models as well.  I'm sorry that this probably made it even more confusing than before, but it is what it is!

[DEWALTDUDE]

Only Dewalt's Hammerdrill's use the ROHM chuck. Not sure what they use across the pond, probably ROHM on all the XR/XRP drills.

I've really enjoyed my ROHM pusher on my DC925, 927. DCD950 and 970, but during heavy use it has always self-tighten's to the point where it is extremely difficult to unlock and remove the bit.

 I've logged some hours on the 20v Max DCD985 with ROHM's Ratcheting version, and so far so good. I do prefer the ratcheting feel, over the simple "clip" feel on the ROHM Pusher.

[anadevi]

Hi, my DCD785 (compact hammer drill - 20V Max) is using a Jacobs chuck. I did not realize there was a different chuck being used between the hammer vrs non-hammer.

Only Dewalt's Hammerdrill's use the ROHM chuck. Not sure what they use across the pond, probably ROHM on all the XR/XRP drills.

I've really enjoyed my ROHM pusher on my DC925, 927. DCD950 and 970, but during heavy use it has always self-tighten's to the point where it is extremely difficult to unlock and remove the bit.

 I've logged some hours on the 20v Max DCD985 with ROHM's Ratcheting version, and so far so good. I do prefer the ratcheting feel, over the simple "clip" feel on the ROHM Pusher.

[DEWALTDUDE]

Sorry, I meant all XRP hammerdrill's, 4th Gen and up.  

[kjones]

All of my 20v compact drills are in my storage unit, so I do not have them in front of me to check, but I thought that all of the 20v MAX drills had different variations of the Rohm chuck.  Correct me if I am wrong here.

[DEWALTDUDE]

If they do, I got hosed! My DCD780 has a plastic sleeved Jacob's 4000 series chuck.

[kjones]

I will check again when I pick up some of them from my storage unit next week.

[Russ]

I don't want to make it sounds like Jacobs are lower quality, because they are one of the best.  Rohm just has something special with the couple of models that DeWALt chose to use in the DCD970/950 18v models, as well as all of the new 20v MAX models.  You will find though that most major drill brands use Jacobs chucks, and a lot of Jacobs models are really great products, but they have sum sub-par models as well.  I'm sorry that this probably made it even more confusing than before, but it is what it is!

Oh I knew Jacob's made great chucks, but I just figured why not make diagram to maybe help others in case they were still unsure.  As everyone here is well aware, my Dewalt Cordless Drill DW990K Type 4 uses a 1/2" (13 mm) so I do have some "field" experience.  I like the keyless feature as well.

Dewaltdude:  Hope you don't have a Type 1, as most of those components have been discontinued.  Here is a link.  http://www.ereplacementparts.com/dewalt-dcd780c2-type-18v-drilldriver-parts-c-1009_1162_157663.html

This link to this model also has a host of discontinued parts as well.  http://www.ereplacementparts.com/dewalt-dcd780c2b2-type-20v-compact-drilldriver-parts-c-1009_1162_157712.html

However I am not sure what state your in Dewalt Dude, but  I recommend Banner Tool Service and even talking to ereplacementparts for help on finding out what type of chuck you might have.  I'd advise asking for a part number though for your chuck.   

[kjones]

When parts get discontinued like that, it just means that there has been some small tweak to a component, which will roll into all tools that come in for repair as well as all of the new ones.  So if there is a component that is weak, or if a distributor changes, or any number of other reasons for a change, the part changes on the diagram.  So if you had an issue with a drill for example, and you take it to the service center, it will get replaced with the new variations of the components.  Not a big deal, just little rolling changes.

[kjones]

and I just checked my 20v MAX right angle drill, and it has an LFA chuck on it, so it is obviously not a Rohm.  I can't remember where I heard that all the 20v tools would have Rohm on them... anyway, I'll still check my compacts when I pick them up again.