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          What are the characteristics of the full-floating half shaft?

          2021-09-09

                 Full-floating half shaft means that the half shaft only bears torque, not any bending moment. The inner side of such a half shaft is connected with the differential side gear through a spline, and the outer side has a flange disk. The flange disk is fixed with the wheel hub by bolts, and the wheel hub is installed on the axle through two tapered roller bearings. In this way, the various shocks and vibrations received by the wheels and the weight of the vehicle are all transmitted from the wheels to the hub and then to the axle, and they are all borne by the axle housing. The half shaft just transmits the torque from the differential to the wheels to drive the car. In this process, the two ends of the half shaft only bear torque, not any bending moment, so it is called "full floating type". Its structural feature is that the hub is mounted on the axle through two tapered roller bearings, the wheel is mounted on the hub, and the supporting force is directly transmitted to the axle. The half shaft is fixed on the hub by eight screws to transmit torque to the hub and drive The wheels turn.

                 The full-floating half-shaft is easy to disassemble and replace, and the half-shaft can be taken out only by removing the fixing bolts fixed on the flange of the half-shaft. After removing the half axle, the entire weight of the car is supported by the axle housing and can still be reliably parked on the ground; the disadvantage is that the structure is relatively complex and the parts are relatively large in quality. It is a form that is widely used in automobiles, and most of the light, medium, and heavy trucks, off-road vehicles and passenger cars use this form of semi-axle.

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