What is a motorcycle crankshaft? A motorcycle Crankshaft converts reciprocating motion into rotational motion and outputs power through a gear at one end of the crankshaft.

Location of the motorcycle Crankshaft: The most important part of the engine. It bears the force from the connecting rod, converts it into torque, and outputs it through the crankshaft to drive other accessories on the engine to work. Under the combined action of the centrifugal force of the rotating mass, the periodically changing gas inertial force and the reciprocating inertial force, the crankshaft is subjected to bending and torsional loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the surface of the journal should be wear-resistant, uniform and well-balanced.
Structure of motorcycle Crankshaft: In order to reduce the mass of the crankshaft and the centrifugal force generated during movement, the crankshaft journal is often made hollow. There are oil holes on the surface of each journal to import or export oil to lubricate the surface of the journal. In order to reduce stress concentration, the main journal, crank pin and crank arm are connected by transition arcs.
Through the above introduction and analysis of the motorcycle Crankshaft, hope it helps you.