Device for detecting and monitoring damage to anti-friction bearings

A combination anti-friction bearing and device for detecting and monitoring damage to races or adjacent regions of bearing rings, the combination comprising:

• a bearing with an anti-friction bearing chamber and with a bearing circumference;
• a measuring device disposed at least partially in the anti-friction bearing chamber, said measuring device having a sensor for transmission of measuring signals and a sensor measurement data transmission device for transmitting measuring signals outside the anti-friction bearing chamber and an energy source comprising a first coil to supply the electrical energy required by the measuring device disposed in the anti-friction bearing chamber and a second coil disposed outside the anti-friction bearing chamber for inductive transfer of electrical energy to the first coil, the second coil extending only over a part of the bearing circumference, the energy source further comprising an energy accumulator connected to the first coil for storing electrical energy received by the first coil from the second coil.