ROLLING BEARING UNIT WITH SENSOR

摘要

A sensor device (2) has a magnetostriction sensor (8) for detecting a gap, provided at a stationary side raceway member (3) and located between the stationary side raceway member (3) and a rotating side raceway member (4), and processing means for processing the output of the magnetostriction sensor (8). The processing means is provided with a rotation-detecting portion for obtaining rotational speed of the rotating side raceway member (4) from the number of repetition of variation in the output of the magnetostriction sensor (8), an averaging portion for averaging the output of the magnetostriction sensor (8), and a load-calculating portion for obtaining, from the output averaged by the averaging portion, load applied to a rolling bearing.