Crankshaft is one of the most important parts of the engine, so crankshaft machining is especially important. In front of you to introduce the crankshaft processing technology, Changzhou New Universe Forging Co., Ltd. introduces the structural characteristics of the crankshaft to give you a deeper understanding of crankshaft machining!

The crankshaft generally consists of a main journal, a connecting rod journal, a crank, a balance block, a front end and a rear end. A main journal, a connecting rod journal and a crank form a crank. The number of cranks of the crankshaft is equal to the number of cylinders (in-line engine); the number of cranks of the V-engine crankshaft is equal to half of the number of cylinders.

The main journal is the bearing portion of the crankshaft and is supported by the main bearing in the main bearing housing of the crankcase. The number of main bearings depends not only on the number of cylinders in the engine, but also on the way the crankshaft is supported. There are two types of support for the crankshaft, one is to fully support the crankshaft, and the other is to support the crankshaft. Fully supported crankshaft: The number of spindles of the crankshaft is one more than the number of cylinders, that is, one spindle neck is provided on each side of the journal journal. For example, a six-cylinder engine fully supports the crankshaft with seven main journals. The four-cylinder engine has a total support crankshaft with five main journals. With this support, the strength and rigidity of the crankshaft are better, and the main bearing load is reduced and wear is reduced. Diesel engines and most gasoline engines use this form.