Novel pre-tightening structure of full-floating axle hub bearing

The utility model relates to a novel pre-tightening structure of a full-floating axle hub bearing. Wherein the outer bearing is arranged on one side of the bearing nut, the hub is sleeved on the outersides of the bearing nut and the outer bearing, an inner bearing is arranged on the inner side of the hub, the outer bearing and the inner bearing are sleeved on the outer side of a shaft head, a hubspacer bush is arranged between the outer bearing and the inner bearing, and a hub spacer bush adjusting gasket is arranged between the outer bearing and the hub spacer bush. According to the structure, the inner rings and the outer rings of the outer bearing and the inner bearing are simultaneously extruded and pre-tightened through the tapered rollers, so that the bearing is pre-tightened to beused in a reasonable design state, and the service life of the bearing is better guaranteed. 本实用新型涉及一种全浮类车桥轮边轴承新型预紧结构，包括轴承螺母，设置在轴承螺母一侧的外轴承，套设在轴承螺母和外轴承外侧的轮毂、轮毂的内侧设有内轴承、外轴承和内轴承套设在轴头的外侧、外轴承和内轴承之间设有轮毂隔套，外轴承和轮毂隔套之间设有轮毂隔套调整垫片。该结构采用外