In a highly preferred embodiment of {HEAD ~ the invention}, the shaft includes a hydrostatic thrust bearing and is provided with an internal conduit extending from {TAIL ~ the outlet port} to the thrust bearing 
In a highly preferred embodiment of { HEAD ~ the invention } , the shaft includes a hydrostatic thrust bearing and is provided with an internal conduit extending from { TAIL ~ the outlet port } to the thrust bearing
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH