How Much Do You Know About Axles?

Which part of the car is the axle?

An axle (also called an axle) is connected to the frame (or load-bearing body) by a suspension with wheels mounted on either end. The axle can be either integral or disconnected. Integral axles are generally used with non-independent suspensions, while disconnected axles are often used with independent suspensions. Depending on how the vehicle is driven, axles include steering axles, drive axles, steering drive axles, etc.

What is an axle?

● An axle (also called an axle) is connected to the frame (or load-bearing body) by a suspension, with wheels mounted on both ends. It is also worth noting that the subframe can be seen as the skeleton of the front and rear axles, and is an integral part of the front and rear axles. The subframe is not a complete frame, but a support for the front and rear axles and suspension. The role of the axle is to bear the load of the car and maintain the normal operation of the car on the road.

●Note: It is the suspension that transmits the force and torque between the frame and the wheels, not the axle.

●Depending on the role of the wheels on the axle, the axle is also divided into four types: steering axle, driving axle, steering drive axle and supporting axle. Among them, steering axle and supporting axle are both driven axles.

●Most trucks use front rear drive (FR) and large buses use rear rear drive (RR), so the front axle acts as the steering axle and the rear axle (or middle axle) acts as the driving axle; while general cars use front front drive (RF), when the front axle becomes the steering drive axle and the rear axle acts as the supporting axle.

●The front axle becomes the steering drive axle and the rear axle acts as the support axle.

●The front, middle and rear axles are usually classified according to the relative position of the axle on the blue car. The front and rear axle structures are described below. The front axle is Chu-body type steering axle, and the middle and rear axles are tandem type drive axles, which have strong load-bearing capacity and good passability.

●Steering axle steering axle is the axle that undertakes the steering task.

●Note: Generally, the front axle takes up the steering task, and the front and rear axles of four-wheel steering cars, are steering axles.

● Drive axleDrive axle, the mechanism that takes the speed and torque from the transmission and then transmits them to the drive wheels. Steering drive axleSteering drive axle is the mechanism that undertakes both the steering task and the transmission of power to the driving wheels. Support axle Support axle is the mechanism that neither undertakes the steering task nor transmits power to the driving wheels.

● The front axle is the steering drive axle and the rear axle is the support axle for front-wheel drive vehicles; for front-wheel drive vehicles, the front axle is the steering axle and the rear axle is the drive axle.

● The most likely failure of the axle is deformation and fracture, as well as some failures caused by displacement wear. The clearance between the chassis connectors or cushioning parts should be checked more often during the overhaul to see if there is a problem. Such as the main pin gap is too large loosening or transverse stabilizer rod cushioning tape to the noise.

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