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The main operating characteristics of a heavy-duty truck wheel hub bearing are as follows: The heavy-duty truck wheel hub bearing is assembled on the main shaft of the heavy-duty truck's axle. The inner ring of the double-row tapered roller bearing is fixed to the main shaft. The vehicle controls the rotation of the axle main shaft, which drives the heavy-duty truck's ball housing, which in turn rotates the outer ring and rollers at a specific speed. The heavy-duty truck's tire is mounted on the bolts, driving the vehicle. The main structure and assembly methods of heavy-duty truck wheel hub bearings