Locking Keyless Drill Chuck (Handheld Drill)

[darkzero]

This is the first time I'm hearing about a locking keyless drill chuck. I've got keyless chucks for my metalworking machines & of course they operate as you would expect. Some keyless chucks on hand held drills you can hear a ratcheting mechanism as you tighten them down. But I have never heard of this type of locking chuck. After tightening down you then turn it in reverse to engage the lock.

I just went & checked my 2nd gen Fuel that has a 3rd gen chuck on it now & my old Dewalt XRP. Neither have this feature. Have you guys heard of this & do you have a chuck that operates this way? Is this even correct? I personally would find this feature (if it is correct) to be very annoying.

EDIT: I take that back, after trying it some more seems like my MW does have that feature & so does my Dewalt (maybe). My Dewalt seems like it does do it but not as distinct as my MW, can't tell if it's just f'd up. Both have the ratcheting mechanism. So is this really a feature on all ratching type keyless chucks?


Around the 2 min mark.

 

[Bigblockyeti]

I remember when Milwaukee introduced this for hammer drills, the impacting action had a propensity to loosen the non-locking chucks. I'm sceptical of the need to turn the chuck in the loosening direction to lock it. I'm thinking he has it wrong and when it's tight, leave it alone. Turning it backwards to that first positive detent I think actually unlocks it. All of my cordless hammer drills have this type of chuck, only a few of my non-hammer cordless drills have that type.

 

[darkzero]

Yeah both of my current drills are hammer drills.

I just checked the Milwaukee manual for both my 2nd gen Fuel & the 3rd gen Fuel, no mention of this. I'll keep using my chuck the way I always have been unless someone convinces me otherwise.


1. To open the chuck jaws, turn the sleeve in the counterclockwise direction. When using drill bits, allow the bit to strike the bottom of the chuck. Center the bit in the chuck jaws and lift it about 1/16” off of the bottom. When using screwdriver bits, insert the bit far enough for the chuck jaws to grip the hex of the bit. [/quote]

2. To close the chuck jaws, turn the sleeve in the clockwise direction. The bit is secure when the chuck makes a ratcheting sound and the sleeve can not be rotated any further.
3. To remove the bit, turn the sleeve in the coun-terclockwise direction.NOTE: A ratcheting sound may be heard when the chuck is opened or closed. This noise is part of the locking feature, and does not indicate a problem with the chuck’s operation

 

[tarbellb]

How would anyone prove that its "locked"?



I think someone needs to email Rohm or similar and ask, im skeptical.

 

[darkzero]

I have no idea. If this really is a feature, I don't think that reversing the sleeve actually locks the chuck, but rather it disengages the collar from the ratcheting mechanism so that it isn't susceptible to vibration from hammer drilling or whatever & possibly loosen up.

I did a bit more searching after I posted this thread. Found one more article online about this & a video by Makita Australia (so it seemed). Also a patent that sort of describes this feature but didn't actually talk about reversing the sleeve. Found some talk of Rohm chucks where users say they do not have this reverse detent. Other than that not much more. If this is actually feature that has been around for so long, how come it's not more widely known & talked about?