Re: [CAD_CAM_EDM_DRO] Re: Custom made bearing for lathes

Cristian Stefan wrote:

> It was more for fun than for necesity. BTW, I found
> this
> http://home.insightbb.com/~joevicar3/Air_Spindle_Plans.htm
> - has anyone tried/ built this?

My only comment is his 3 CFM spec. I have an electric air
bearing spindle that also uses the compressed air for motor
cooling, and it uses just a tiny bit more air than this.
Without using the air for cooling, this thing must have LARGE
clearances, and that can lead to spindle instability. There are
a bunch of tricks to making an air bearing stable, but one of
them is to get the clearance down as small as you can go.

Jon