The invention provides a bearing device for a wheel, which can simply perform grinding work of a hub ring. In a bearing device (1) for a wheel, a hub ring (3) has an inner raceway groove (3c), a seal region (3d), a recess (3m), and a flange surface (3k), an outer side seal member (10) is provided with a core bar (11) and a seal member (12), and the seal member (12) has a contact lip (12d) in contact with the seal region (3d), and a labyrinth lip (12e) facing the recess (3m) with a gap therebetween. The recess (3m) has: a bottom section (313) positioned between the outer-diameter-side edge section (311) and the inner-diameter-side edge section (312); and a tapered surface (314) that extends in the radial direction from the outer-diameter-side edge section (311) toward the bottom section (313) and that is inclined toward one end in the axial direction from the outer-diameter-side edge section (311) toward the bottom section (313).
本发明提供能够简单地进行轮毂圈的磨削加工作业的车轮用轴承装置。在车轮用轴承装置(1)中,轮毂圈(3)具有内侧轨道槽(3c)、密封区域部(3d)、凹部(3m)以及凸缘面(3k),外方侧密封构件(10)具备芯骨(11)和密封构件(12),密封构件(12)具有与密封区域部(3d)接触的接触唇(12d)、以及与凹部(3m)隔开间隙地对置的迷宫式唇(12e),凹部(3m)具有位于外径侧缘部(311)与内径侧缘部(312)之间的底部(313)、以及在径向上从外径侧缘部(311)朝向底部(313)侧延伸且随着从外径侧缘部(311)趋向底部(313)而向轴向一端侧倾斜的锥面(314)。
Bearing device for wheel
车轮用轴承装置
2024-01-23
Patent
Elektronische Ressource
Chinesisch