Todays Project - What did you do today?

[TomG]

(12-21-2016, 10:20 PM)pepi Wrote: A question, other than the expense & holding power of a 6 jaw chuck are there other advantages to know about?

Greg

Greg,

Not sure I'd include expense as an advantage, but six jaws does offer a number of benefits over three. Probably the biggest is concentricity. When you chuck a machined cylinder, it run much more true than in a three jaw chuck, axially and radially. Another advantage is that since there are twice as many jaws, they put half as much force on the part. That makes for fewer marks and less distortion, especially on thin wall parts. I've also seen (and witnessed ) parts "cam out" of three jaw chucks, and that can't happen on a six jaw.

Tom