Patent ID: 7241053

Claim:
A rolling bearing unit with a sensor, comprising: an outer ring and an inner ring, one of the outer and inner rings being a rotary ring and the other being a fixed ring, and the outer and inner rings being rotatable with respect to each other; a plurality of rolling elements rollably interposed between an outer raceway formed in an inner peripheral surface of the outer ring and an inner raceway formed in an outer peripheral surface of the inner ring; and a sensor unit having a detecting part for detecting at least one of temperature and vibration of a rolling bearing including the rolling elements, a memory recording output signals taken out from the detecting part, signals obtained after the output signals are processed and items to be managed with respect to the rolling bearing including an identification mark of the respective rolling bearings, wherein the memory of the sensor unit is electrically connected via an interface section to a connector which is provided on a hold cover of the rolling bearing unit.