{HEAD ~ Each} of {TAIL ~ the support bearings} has a respective geometric center, while each of the transverse seals has an annular abutment surface engaging a respective annular contact surface of the crosshead 
{ HEAD ~ Each } of { TAIL ~ the support bearings } has a respective geometric center , while each of the transverse seals has an annular abutment surface engaging a respective annular contact surface of the crosshead
HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH