| 摘要 |
PROBLEM TO BE SOLVED: To provide a differential unit that can effectively suppress a problem such as fretting even when a so-called low torque specification is adopted.SOLUTION: In a differential unit freely connecting a front end to a rear end of a propeller shaft and having a tapered roller bearing rotatably supporting two back and forth positions in the middle of a pinion shaft fixing a deceleration small gear meshing with a deceleration large gear to the rear end on a casing, the tapered roller bearing includes at least an inner ring, an outer ring, and a tapered roller being a rolling element, the inner ring has a large flange side end surface and a small flange side end surface, the small flange side end surface of the two tapered roller bearings is mutually pressed by a spacer, and the spacer is a collapsible spacer with at least three cylindrical parts. |
