Appointment

Ensure best performance of the engine. Transform reciprocating motion effort of the engine pistons to the torque of the output shaft. Used to replace worn or damaged parts during repair work.

Structure

Crankshaft - a detail or unit (in the case of a composite shaft) of complex shape designed with the following elements:
Crankshaft neck - shaft support of main bearing of engine crankcase.
Crankpin - place for installation of rods with channels for lubrication of connecting rod bearings.
Web of crank - connect crankshaft neck and crankpin.
The front part of the output shaft - a place for installation of gear wheel or PTO pulley to drive gas-distributing mechanism (SRM) and various auxiliary components and systems.
The back part of the output shaft - a place for installation of flywheel or massive gear wheel of main power.
Counterbalance - unload main bearings of the centrifugal forces of inertia of the first-order unbalanced masses of crank and lower part of the rod.