Roller bearing with sensor unit

摘要

The bearing (1) has a capacitive sensor unit (2) comprising a rotor (8) and a stator (9) that forms a condenser with two condenser plates (11, 12). The sensor unit is fixedly connected with the bearing or directly integrated into the bearing. A processing and reinforcement electronics (13) evaluates change of capacity of the condenser. The rotor or the stator exhibits solid measure such that the change of the capacity of the condenser occurs during relative movement of the stator and the rotor. The rotor is formed in a dielectric of the condenser.