Rolling bearing apparatus

摘要

A rolling bearing apparatus (1) is provided that rotatably supports a cam shaft (101) in a cylinder head of an engine. The rolling bearing apparatus includes a plurality of rolling elements (14); a cage (16) that positions the rolling elements (14) so as to be spaced at regular intervals from each other in a circumferential direction and that retains the rolling elements (14) in a freely rotatable manner; a shell-type outer ring (12) configured to receive the rolling elements (14) and the cage (16) and having a raceway surface of the rolling elements (14) at an inner side thereof; and an outer ring fastening member (20) formed of a material having almost the same thermal expansion coefficient as the shell-type outer ring (12) and having a press-fit portion press-fitted to the shell-type outer ring (12).