Rohm keyless chuck keeps loosening

[Shockwave]

Anyone else have this problem? I can drill 10, maybe 15 holes then the chuck will have backed off about an 8th of a turn and the bit will fall right out. I can't tighten it by hand any tighter than I am.

 

[Mel]

The best way to tighten these chucks is by holding the chuck as tight as you can and running the drill motor. But you may already be doing that. I personally haven't had good luck with keyless chucks. I prefer the key type.

 

[RyanM]

I have the same issue. I've just become used to it. Looking back, I think I should have gone with the key'd chuck.

 

[Ted RV8]

Abrupt stop?

You didn't mention what kind of a drill you were using. Sometimes the battery powered drills stop very abruptly and will loosen a keyless chuck.

I personally prefer the key type chucks also.

Ted

 

[Shockwave]

It's in a Sioux air drill, so yes it does stop abruptly. (Also why I'm hesitant to grab it and hit the trigger to tighten it)

I may be going back to the keyed chuck as well.

 

[zzapp]

Just grab it

Set the bit. Start up the drill and try to stall it with your hand. This seems to get it a bit(!) tighter. Then again I'll never be a hand model.

 

[[email protected]]

rohm keyless chuck

for what it's worth i have had very good success with the supra line rohm keyless chuck in my 1/4" air drill:

the clamping action is engaged from a very fine internal thread and it requires quite a few turns to stroke from fully closed to open; it does not loosen with extended use though.

 

[lorne green]

Sioux air drill

My Sioux air drill with the Rohm keyless chuck is excellent. I wouldn't have a keyed chuck. I use two Makita cordless Drills with keyless chucks as well.
I think the secret here is to try to buy quality tools when frequent use is intended. My own credo only.

 

[derLuigi]

what about the weight?

Hi,

what's the weight of the r?hm-chucks you're using? How does it affect the handling of the drill? I've got a larger diameter keyless chuck on my sioux and would like to swap it for one with a smaller diameter, I was hesitant about the r?hm because of the weight however.

Mario

 

[[email protected]]

rohm supra keyless chuck specs

Specs for the rohm supra keyless chuck that i am using:

Mount: 3/8"-24 Internal Thread (mounts on drill's male thread)
Grip Range: 0-1/4"
External Diameter: 1-1/4"
Length Opened: 2-5/16"
Length Closed: 2-9/16"
Weight: 10.6 oz

the thin diameter matches a typical jacobs chuck and the balance and weight of my drill remains good.