| 摘要 |
A hub (20) of a vehicle bearing device (10) has a cylindrical portion (21) and a flange portion (30). The flange portion has a pin hole formation portion (34), a reference position intermediate portion (38A), separate position intermediate portions (38B, 38C), and build-up portions (36, 37). The reference position intermediate portion (38A)is formed between bolt hole formation portions (32). The first separate position intermediate portion (38D) is formed between bolt hole formation portions (32). The second separate position intermediate portion (38E) is formed between bolt hole formation portions (32). The pin hole formation portion (34) is formed at the reference position intermediate portion (38A) and has a hub side pin hole (35). A pin (50) for fixing the hub (20) and a brake rotor (40) to each other is inserted into the hub side pin hole (35). The build-up portions 36, 37) are formed on the separate position intermediate portions (38B, 38C), and are balanced in terms of weight with the pin-hole formation portion (34). |
