What are the components of the crankshaft?

The crankshaft is mainly composed of the front end (or free end) of the crankshaft, connecting rod journal, main journal, crankshaft, balance weight, and rear end flange (or power output end) of the crankshaft. The function of the crankshaft is to withstand the force transmitted by the connecting rod and convert it into torque, which is output by the crankshaft and drives other accessories on the engine to work. The crankshaft is subjected to a combined action of centrifugal force from rotating mass, periodic gas inertia force, and reciprocating inertia force, causing it to withstand bending and torsional loads.

The following are the functions of the crankcase:

1. The crankcase is the most important component in the engine. It bears the force transmitted by the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine to work;

2. The crankshaft is subjected to the combined action of centrifugal force from rotating mass, periodic gas inertia force, and reciprocating inertia force, causing the crankshaft to withstand bending and torsional loads;

3. Prevent oil deterioration; Prevent leakage of crankshaft oil seal and crankcase gasket.