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What is the crankshaft made of?

Release time:

2023-10-24

The crankshaft mainly consists of the front end (also known as the free end), connecting rod journal, main journal, crank, balance weight, and the rear flange of the crankshaft (also known as the power output end). The front end of the crankshaft is equipped with a timing gear, and the rear end is fitted with a flywheel (some engines also have balance weights).

The crankshaft mainly consists of the front end (also known as the free end), connecting rod journal, main journal, crank, balance weight, and the rear flange of the crankshaft (also known as the power output end). The front end is equipped with a crankshaft timing gear, and the rear end is fitted with a flywheel (some engines also have balance weights).

According to the number of main journals, crankshafts can be divided into fully supported and non-fully supported types; based on their structural forms, they can be classified into three types: integral forging, integral casting, and combined type; based on different materials, they can be divided into ductile iron and steel.

The function of the crankshaft is to convert the thrust transmitted by the piston connecting rod into rotational torque, transforming the reciprocating linear motion of the piston into circular motion of the crankshaft. It then transmits engine torque to the transmission system through the flywheel; at the same time, it drives the engine's valve mechanism and other auxiliary devices.

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