A rolling-ball bearing unit with a rotating speed sensor comprising rotating and stationary rings, a tonewheel, a first seal ring provided to seal between the tonewheel and the section where rolling members are provided, and a second seal ring having a base end portion fixed to the peripheral portion of a cover for the sensor and a tip end portion provided in a sliding contact relationship with a member provided axially adjacent the bearing unit and rotating with the rotating ring, and a harness take-out portion provided in a relatively their portion of the cover.

Rolling bearing unit having a plurality of rolling members between a stationary raceway and a rotatable raceway and a rotating speed sensor

A combined bearing and sensor assembly comprises a sensor unit 30 and a bearing unit 40. The sensor unit 30 includes a coupling ring 10 which has a radially inwardly directed lip 22 which engages with a groove 11 formed in the inner raceway 18 of the bearing unit 40. The coupling ring 10 also has an axially extending portion 5, the radially inwardly facing surface of which engages with a sensor unit mounting surface 8a such that the sensor unit's engagement to the mounting surface 8a is greater than its engagement to the bearing unit 40. In this way the combined bearing and sensor unit may be sold, transported and fitted as a single unit, but will separate to allow the sensor unit 30 to remain properly mounted when the bearing unit 40 is dismounted for general maintenance purposes.

Combined bearing and sensor assembly

Rolling bearing unit with rotary speed sensor

PROBLEM TO BE SOLVED: To utilize a rolling bearing widely, even when the installation space is narrow in a radius direction and/or axis direction, prevent the contact surely between a connection cable having no small bend radius and rotating peripheral parts and compensate the length of the connection cable. SOLUTION: In the rolling bearing with a sensor for detecting an operation state, a sensor housing 8 having the sensor has a small width beyond at least one range and the connection cable 13 of the sensor 7 is drawn out from the wide part of the sensor housing 8 in the periphery direction of the rolling bearing. COPYRIGHT: (C)1996,JPO

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Papers

Rolling bearing with sensor