| 摘要 |
PROBLEM TO BE SOLVED: To provide a hub unit allowing easy attachment/removal of a cap to/from a pilot part.SOLUTION: A hub unit 1 is provided with a cap 3 covering an opening of a pilot part 6, and the cap 3 includes a cap body 31 formed into a disk shape and a cylindrical part 32 extending in an axial direction from an outer periphery of the cap body 31. The cap 3 is detachably attached to the pilot part 6 by screwing a male screw part 32a formed on an outer periphery of the cylindrical part 32 into a female screw part 6a formed on an inner periphery of the pilot part 6. |
