| 摘要 |
An outer ring (4) is provided with a key groove (11) radially extending from an inner diameter to an outer diameter on an end surface thereof. A key member (10) includes an annular body (12), an inwardly projecting part (12b) which is provided on an inner periphery of the annular body and adapted to be inserted into the key groove (11) of the outer ring (4), and an outwardly projecting part (13) which is provided on an outer periphery of the annular body and adapted to be inserted into a key groove (2a) of an axle box (2). |
