Particularly, when a change in the bore diameter of {TAIL ~ the fluid bearing} of the sleeve significantly affects the loss and {HEAD ~ rigidity}, the present invention exhibits significant effects 
Particularly , when a change in the bore diameter of { TAIL ~ the fluid bearing } of the sleeve significantly affects the loss and { HEAD ~ rigidity } , the present invention exhibits significant effects
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH