If {HEAD ~ the balance shaft} is mounted in {TAIL ~ roller bearings} and if the roller bodies have direct contact with the bearing surface, it is implemented in a suitable steel and the bearing journals are hardened 
is mounted in
If { HEAD ~ the balance shaft } is mounted in { TAIL ~ roller bearings } and if the roller bodies have direct contact with the bearing surface , it is implemented in a suitable steel and the bearing journals are hardened
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL 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