| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing with a sensor, into which foreign matters hardly intrude, and which can smoothly rotate.SOLUTION: A sensor 20 provided in a deep-groove ball bearing 10 has an encoder 22 attached to an inner ring 1 so as to be rotatable integrally with the inner ring 1, and a magnetism detection element 24 attached to an outer ring 2 via a sensor housing 26 so as to oppose the encoder 22 leaving a sensor gap. Then, a state of the rotation of the encoder 22 which rotates in the same rotation state as that of the inner ring 1 with the rotation of the inner ring 1 can be measured by the magnetism detection element 24. A foreign matter intrusion prevention part for preventing the intrusion of foreign matters into the bearing from a gap between the inner ring 1 and the sensor housing 26 is provided in the deep-groove ball bearing 10. A size of the gap between the inner ring 1 and the sensor housing 26 is set substantially the same as that of the sensor gap between the magnetism detection element 24 and the encoder 22, and a non-contact seal is formed. The non-contact seal functions as the foreign matter intrusion prevention part. |
