What is the function of the axle shaft in a car?

2 Answers
LeCamila
07/25/25 3:27am
The main function of the axle shaft in a car is to transmit power. The axle shaft transfers the torque from the differential to the wheels, thereby propelling the vehicle forward. Currently, cars use axle shaft support forms, with the most common being the full-floating axle shaft and the semi-floating axle shaft. Among these, the full-floating type is more widely used. The axle shaft is also a solid shaft that transmits torque between the differential and the drive wheels. Internally, it is connected to the axle shaft gear via splines, while externally, it is connected to the wheel hub. As mentioned earlier, the full-floating axle shaft only transmits torque and does not bear any reaction forces or bending moments, which is why it has a broader range of applications.
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StElizabeth
08/10/25 4:59pm
The car's half-shaft, to put it simply, is that metal rod connecting the transmission to the wheels, which transfers the engine's power to the tires, making the car move. Don't underestimate its simplicity—it plays a crucial role. When you turn the car, the half-shaft rotates freely to accommodate angle changes, ensuring smooth power delivery. Without it, the car would be like pressing the gas pedal but going nowhere. As someone who enjoys tinkering with cars, I've noticed that half-shafts endure tremendous stress during off-roading or high-speed driving. Oil leaks or wear can lead to unstable driving or even strange noises. So before long trips, I always check the half-shaft boot to prevent dust from entering and causing corrosion. Regular maintenance is essential—don’t overlook this part during oil changes, as it helps extend the drivetrain's lifespan. On rough terrain, the half-shaft's design keeps the suspension flexible, minimizing excessive vibration.
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