Broken keyless chuck

This topic has 12 replies, 9 voices, and was last updated 17 August 2021 at 08:36 by Michael Gilligan.

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12 August 2021 at 10:44 #28305
Gary Wooding
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@garywooding25363
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12 August 2021 at 10:44 #557973
Gary Wooding
Participant
@garywooding25363
The keyless drill chuck I use on my lathe suddenly decided it had had enough. I had just removed a drill and wanted to insert another, but although the sleeve turned, the jaws didn't move. I can screw the sleeve in and out about 6mm, but the jaws don't move. There's a slight grinding noise apparent when rotating the sleeve, but the jaws remain stationary. There is no maker's name visible anywhere. I've used it without problems for a number of years.

I can't see any way to open it up to determine, and hopefully rectify, the problem. Any ideas?
12 August 2021 at 12:20 #557979
Ex contributor
Participant
@mgnbuk
This Youtube video might offer a few hints on how to dismantle one of those.

I've only skipped through it, but brute force does not seem to be required.

Nigel B.
12 August 2021 at 13:18 #557983
Ady1
Participant
@ady1
utube is your pal here, someone somewhere will have done your type so hunt about

They are clever little things and well put together

I did one here and the only thing I would stress is point it up the way to get the hood off, with the body in a fixed vice and the hood being used as the "nut" part
12 August 2021 at 13:36 #557984
David George 1
Participant
@davidgeorge1
It looks like the outer shroud has unscrewed instead of the body rotating. Screw the shroud back on but have a look e.g. the video first. Don't forget to take pictures as you disemble it and mark parts where they come from.

David
12 August 2021 at 17:52 #558000
Clive Foster
Participant
@clivefoster55965
As all these engineering keyless chucks are assembled in a very similar manner it's worth rooting around the internet for Albrecht service instructions. The set I found had nice exploded drawings along with some "professional" techniques and wrinkles to get it working really well. Some of the amateur write ups and YouTubes are said to be lacking that little bit extra.

Unfortunately the link I used for the Albrecht instructions is dead.

Clive
12 August 2021 at 19:08 #558007
DC31k
Participant
@dc31k
Try these as an aperitif:

Rebuilding an Albrecht Drill Chuck

https://www.penntoolco.com/content/AlbrechtPrecisionReplacementParts.jpg
12 August 2021 at 20:41 #558016
John Haine
Participant
@johnhaine32865
I am fairly certain that this has been answered previously on this forum. Use the Google search facility on the homepage. Or maybe Michael Gilligan will chime in as his search skills are excellent.
12 August 2021 at 23:10 #558032
Michael Gilligan
Participant
@michaelgilligan61133
I don’t really do requests, John

But as Clive has given us a good start : **LINK**

https://www.albrecht-germany.com/en/instruction/

MichaelG.

.

Click on the letters SBF on the line

Repair manuals SBF

Edited By Michael Gilligan on 12/08/2021 23:18:18
16 August 2021 at 19:44 #558521
Michael Gilligan
Participant
@michaelgilligan61133
So … did you fix it, Gary ?

MichaelG.
16 August 2021 at 21:23 #558532
peak4
Participant
@peak4
These are the bearings that came out of mine.
As I recall, the rear collar unscrews as well.

I took it apart as it was starting to feel a bit gritty.

I also had a problem several years ago where a drill had grabbed and self tightened the chuck very tightly.
I needed some gas pliers to unscrew the front to release the drill bit as it was too tight by hand.
After that, it would only open up to abut 10mm.
Last week I took off just the front cone, jaws and the screw which moves the jaws.
Half an hour with a couple of diamond files, and all seem OK again now.

Bill
17 August 2021 at 07:44 #558553
Gary Wooding
Participant
@garywooding25363
I've not managed to fix it yet. I've not even managed to dismantle any part of it. I can't extract the taper from the chuck body, and the rear collar appears to be just a cap, which also refuses to come off.

By holding the tang of the taper in a vice I'm able to app[y a powerful pipe gripper to the shroud, and have managed, little by little, to unscrew it enough to see the start of the thread. Each time I try, there is considerable internal grinding, and I'm able to unscrew it a little more, but not yet enough.
17 August 2021 at 08:36 #558557
Michael Gilligan
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@michaelgilligan61133
Sounds like you might have a lot of debris [previously known as balls] jamming-up the works.

MichaelG.
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