It is made out of forged high-tensile alloy
steel, induction hardened on the journals and crankpins and rolled on
the grooves.It rests on five main bearings with bearing
shells graded into three sizes.The crankshaft endfloat is adjusted by two
thrust washers located in the central main bearings.Eight counterweights ensure that the rotating
masses of the crankshaft are precisely balanced.A channel runs along the inside of the shaft
to lubricate the main bearings and big end bearings.The phonic wheel (1) for the rpm sensor
is mounted on the rear.