Patent ID: 8234925

Claim:
A device for monitoring the vibration generated by a bearing in a machine, the device comprising: two coaxial rings, one outer ring ( 1 ) and one inner ring ( 2 ), one of which is fixed in relation to the structure of the machine, and the other rotating; at least one rolling element ( 3 ) moveably positioned between the outer and inner ring; at least two conducting elements forming conducting plates ( 5 , 6 ) of at least one capacitor, one plate ( 5 ) positioned at a distance from another plate ( 6 ) formed by a conducting part of the rotating ring; at least one non-conducting positioning means ( 4 ) connected to one of the rings that is fixed in relation to the structure of the machine, the non-conducting positioning means ( 4 ) having at least one housing for positioning at least one conducting element; and at least one partitioning means ( 8 ) supporting the non-conducting positioning means ( 4 ) to define a space ( 7 ) between the plates ( 5 , 6 ), the space forming a dielectric insulating medium, the partitioning means forming a sealed enclosure for the insulating medium ( 7 ) by contacting a part of the surface of the rotating ring; wherein vibrations generated by other components of the machine pass through the bearing, with each of the other components of the machine having its own frequency signature; and wherein the bearing defines an axis of rotation (Z-Z).