The crankshaft converts the linear stroke motion of the pistons into rotary motion.
The following features apply both to the M57 and M67:
• Threaded connection on front end of crankshaft designed as 4-hole mounting (replaces central bolt)
• Thrust bearing designed as constructed bearing
M57-specific features
• Material C38 mod.
• Bearing surfaces and radii inductively hardened
Main bearings (as on M47)
• Thrust bearing arranged between cylinders 5 and 6
• RPM signal taken from last crankshaft web, incremental wheel screwed on crankshaft web
M67-specific features
• Material 42 CrMo 4, nitrocarburized
• Shaft cranked at two levels (similar to M62)
• Main bearing, common part with M62
• Thrust bearing with integrated bearing, arranged on flywheel end of main bearing
