What is the main reducer of a car?

Different series of main reducers have different structures. The old teaching materials of automobile structure are generally based on the main reducer of Dongfeng 140, but in fact, the main reducer structure of Dongfeng 140 is also very classic, which can represent the structure of most automobile main reducers. Take Dongfeng 140 main reducer as an example, its main structure is: driving bevel gear, driven bevel gear, bearing seat, reducer housing assembly and differential assembly, in which the differential assembly consists of differential housing assembly, cross shaft, planetary gear, half shaft gear, planetary gear gasket and half shaft gear gasket.

Dongfeng 140 main reducer represents the structure of most single rear axle main reducers, but now many heavy trucks adopt through bridges, which is very different from the above structure.