| 摘要 |
Provided are a life estimation device and a life estimation method for a rolling bearing, which are capable of more accurately estimating the life of a rolling bearing when an indentation is formed with consideration given to the height of a swelling around the indentation and the like. This life estimation device (1) is a device for estimating the life of a rolling bearing provided with inner and outer rings (10, 11), and a plurality of rolling elements (12) interposed between the rolling contact surfaces (11a, 12a) of the inner and outer rings (10, 11). The life estimation device (1) comprises a swelling height estimation means (7) which, from the depth (h2) of an indentation (14) formed in the rolling contact surface (11a, 12a) of either of the inner and outer rings (10, 11) or the indentation size (D1), estimates the swelling height (h1) from the rolling contact surface (11a, 12a) of the indentation (14) in accordance with an established rule, and a life estimation means (8) which, from the relation between the estimated swelling height of the indentation (14) and the decreasing rate of rolling fatigue life, and an equivalent load, estimates the life of the rolling bearing in accordance with an established rule. |
