| 摘要 |
PROBLEM TO BE SOLVED: To achieve a construction to improve assemblability, by preventing the interference of a head 41 of a stud 13 with a seal ring 14b during mounting or replacing the stud 13 while securing the effects of preventing the entry of foreign matters into an internal space 15 where rolling elements 4 are installed.SOLUTION: A weir part 46 is provided in such a manner that an area protruded radially outward of an outer peripheral face of an axial outer end of an outer ring 2a, in a ring part 23a of a core metal 17a constituting a seal ring 14b, is covered with a seal material 18a. An outer diameter Dof an area located below of a vehicle in a state of being assembled on the vehicle, in the ring part 23a, is set to be not larger than an outer diameter Dof an axial outer end face of the outer ring 2a, and the area is covered with the seal material 18a. Then, a cutout part 47 is provided in the area. |
