High speed rotary coolant coupling

[CAMME]

I am looking for a source for a high speed rotary coupling that will handle 35,000 rpm.

thanks
camme

[Scott_bob]

I'd like to find a solution for attaching coolant to a high speed spindle as well...
There are a lot of things to be conserned about though.

Pressure, RPM, syntrifcal force...
I wonder at what point coolant that is pumped through a rotating spindle would just spin off laterally because of syntrifical force? If it did, it would not reach to cut zone...

Interesting,

[DAB_Design]

http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=1588

[CAMME]

Dab,
Thanks for the link. I look at these and they won't handle 35,000 rpm or 2000 psi coolant. Also the taper on this Okuma is a HSK 63F. It had a 25000 rpm rotary that wouldn't handle the high rpm.

Again thanks,
camme

[CAMME]

Scott bob,
The coolant is expelled thru an ER16 collet or the tool tip and at 2000 psi has no problem putting 8 gpm in the cut zone.

Thanks for your reply,
camme

[trubleshtr]

I beilieve "Barco" makes rotary couplings that can handle the speed and pressure.
They are costly, as they utilize two polished ceramic surfaces to make the seal.

[trubleshtr]

http://www.barcoseals.com/coolant.htm

Actually they are only good to 1500 psi, 20,000 rpm.accordiing to the web site.