Thank you all for the help with this.
Jo
Thats good info. Looks like we have a shaft balance problem so far. But not sure as yet More work to do.
All help much appreciated.
Eng Note:
SKF has made ALL the bearings so far. They also make the T1000 bearings? So why not the T900?
Engs never leave a trusted supplier. So looks like INA/Schaeffer were willing to take on a new design concept.
Is this it?
http://www.schaeffler.com/remotemedi...e/0001614C.jpg
looks like they also got a contract on the EA/GE engines on the new B787 and on the T1000 too.
Looks like more heat transfer for less mass but we will see.