Albrecht chuck

[David Davies 8Participant @daviddavies8]

Good Evening

I have a strange problem with a recently acquired Albrecht 1/2 inch chuck and before I pull it to bits I wonder whether anyone has seen this behaviour before?

Holding the chuck in my hand, if I insert a drill bit and tighten it securely using both hands, the moment I release my grip on the hood it unwinds and loses its grip on the drill.. This happens on both 7mm and 11.5mm diameter drill bits.

Any thoughts?

Thanks

Dave

[David Davies 8Participant @daviddavies8]

[Tony Pratt 1Participant @tonypratt1]

Try a very thorough degrease

Tony

[David Davies 8Participant @daviddavies8]

Thanks Tony, I'll give that a try first.

Cheers

Dave

[Simon Williams 3Participant @simonwilliams3]

You might like to take a look at Tom Lipton with much the same question – though not quite as severe.

Try Youtube link here

He makes the point that the gripping efficiency of an Albrecht chuck is a compromise between a bit of lubrication to get the tightening to work, but too much lubrication stops the friction necessary to hold the drill securely. He also details how to get the thing to bits and what to expect to find inside.

Good luck

Simon

[David Davies 8Participant @daviddavies8]

Thanks for the link Simon, very interesting!

[JohnFParticipant @johnf59703]

David, Have a look at this link to overhauling these chucks on Machinists Blog

John

Edited By JohnF on 17/11/2022 23:25:45

[Ady1Participant @ady1]

I did a cheapo one of theirs here

[Kiwi BlokeParticipant @kiwibloke62605]

Really useful info, thanks. I hadn't appreciated the importance of a bit of appropriate friction in these things.

[David Davies 8Participant @daviddavies8]

JohnF and Ady1, thanks for your posts, both very helpful.

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