Difference between a Deadlock chuck and a Weldon chuck?

[Adam HarrisParticipant @adamharris13683]

[Adam HarrisParticipant @adamharris13683]

Can anyone please tell me the difference between a Deadlock chuck and a Sidelock  chuck or are they to all intents and purposes the same, that is to clamp a cutter with a single Weldon flat?

Edited By Adam Harris on 28/12/2018 18:12:33

[peak4Participant @peak4]

As far as I'm aware, a Weldon chuck, as you say takes a cutter with a flat, and retains it with a single grub screw.

The Clarkson "Dedlock" (not Autolock) has an external thread to take internally threaded shell milling cutters.

There is a drawing half way down the page on Tony's site showing a mandrel for holding the cutters for their T+C grinder. Note the spelling.

(Or see Page 19 of This pdf. )

A search on ebay for "dedlock" will show various cutters and chucks. A search for "deadlock" will show even more.

Obviously it will vanish with time, but there's a photo of one on ebay, complete with instructions in the box lid.

Bill

[Anonymous]

The Clarkson Dedlock system is obsolete, which is why there are so many chucks, but far fewer cutters, on Ebay. I've got one Dedlock chuck, bought in enthusiasm before I realised they were obsolete. Fortunately I've managed to collect half a dozen or so reasonable cutters from Ebay over the years, including this unused one:

Andrew

Edited By Andrew Johnston on 28/12/2018 21:36:44

[Adam HarrisParticipant @adamharris13683]

Bill thank you very much for the detailed explanation – two very different chucks! And Andrew thank you very much for warning me to steer well clear due to cutter obsolescence! Kind regards to both of you, Adam

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