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Re: 4 jaw chuck M12 x 1 thread

 

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Hi Gang:

Runout on a independent 4 jaw is a non problem. You adjust the jaws to true the part anyway.

You can check the runout of the face of the chuck. If it is bad then you can stone the back of the chuck to make it run truer. I did this for my ER32 chuck.

Carl.

On 3/31/2023 12:07 PM, Richard Burrows wrote:

Quality chucks are available from sherline.com and can be ordered threaded to fit M12 x 1 DB/SL lathes.
The price for a 2.5" independent four jaw chuck, threaded M12 x 1, from Sherline is $131.04.
The only concern I would have is, since the chuck is pre-threaded without a faceplate, there would be no way to correct any runout if the Uninat DB/SL spindle is not perfectly threaded.

Richard.

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