Sieg C3 chuck size

[HOWARDTParticipant @howardt]

Chuck update

[HOWARDTParticipant @howardt]

I have a Sieg C3 fitted with the standard 80mm chuck. Having used it for nearly twelve months, on 3 1/2 inch loco work and tooling, I now find I need a bigger chuck as I use the external jaws more and more. After looking around on the net I found that some have gone to 5 inch chucks. What is your experience?

[Neil WyattModerator @neilwyatt]

I have an (excellent) Zither 4" 3-Jaw from Arc, it's very accurate and I imagine fitting a 5" would be way over the top for a C2/C3.

Neil

[John Stevenson 1Participant @johnstevenson1]

The extra strain of a 5" chuck on the bearings would be a step backwards and lead to a reduced surface finish.

[Michael GilliganParticipant @michaelgilligan61133]

Consider using a faceplate and 'dogs'

… or a slim 4-Jaw chuck [similar style to the Burnerd 6" lightweight]

MichaelG.

[HOWARDTParticipant @howardt]

Face plate is alright for a one off but but is a pain for repeats.

If I replace the chuck I would probably go for taper bearings, depends on weight. There is a mod on toolandmods were he fitted a larger spindle on a Bull.

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