Rear axle is the last member of power train. In most of automobiles, real axle is the driving axle. It lies between the driving wheels and the differential gear and transmit power from the differential to the driving wheels. It consists of two half shaft connected to the differential gear, one for one wheel. The inner end of the each half shaft connected to the sun gear of the differential and the outer end to the wheel. The rear axle and differential gear are completely encloses in a housing which protecting them from water, dust and injury.
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