| 摘要 |
<p>PROBLEM TO BE SOLVED: To sufficiently secure a drag load of a dust cover 8 while suppressing the generation of shavings of a plating film 9, in a structure in which the dust cover 8 coated with the plating film 9 on its external surface is pressure-inserted into an outside diameter side of a shaft (32c).SOLUTION: At an external peripheral face of a shaft (32c), the surface roughness of a this-side region 200 in a pressure-insertion direction rather than an attachment-scheduled region 100 of a dust cover 8 is set smaller than the surface roughness of the attachment-scheduled region 100. In this case, the surface irregularity of the this-side region 200 is smaller than the surface irregularity of the attachment-scheduled region 100.</p> |
