| 摘要 |
<p>A hub unit for a vehicle has a flange in which bolt hole groups are arranged. The bolt hole groups each have a hole pattern in which holes are uniformly distributed in the circumferential direction on the same pitch circle, and the holes have, in their inner peripheral surfaces, internal threads with the same nominal diameter. The holes of the bolt hole groups are different from each other in at least either internal thread nominal diameters or pitch circle diameters (R). This enables different kinds of parts with different hole patterns to be directly attached to the flange without use of an adaptor etc. as a separate member, and as a result, cost can be reduced.</p> |
