wherein separating recesses are provided between said sealing {HEAD ~ lands} of said hydrostatic bearings and said {TAIL ~ extensions}, 
wherein separating recesses are provided between said sealing { HEAD ~ lands } of said hydrostatic bearings and said { TAIL ~ extensions } ,
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH