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A transmission noise attenuation device for a bearing assembly of a belt-driven conical-pulley transmission having a chain that serves as an endless torque-transmitting device. A shaft is rotatably supported in a bearing that includes a bearing outer ring with a cylindrical outer surface, wherein th

A transmission noise attenuation device for a bearing assembly of a belt-driven conical-pulley transmission having a chain that serves as an endless torque-transmitting device. A shaft is rotatably supported in a bearing that includes a bearing outer ring with a cylindrical outer surface, wherein the bearing is supported in a bearing housing. At least one cam ring is positioned between the bearing housing inner surface and the bearing outer ring outer surface. The cam ring is elastically deformable to allow limited radial movement between the bearing housing inner surface and the bearing outer ring outer surface.

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What is claimed is: 1. A transmission noise attenuation device for a bearing assembly of a belt-driven conical-pulley transmission having a chain acting as an endless torque-transmitting means, said bearing assembly comprising:a bearing for rotatably supporting a shaft and including a bearing outer

What is claimed is: 1. A transmission noise attenuation device for a bearing assembly of a belt-driven conical-pulley transmission having a chain acting as an endless torque-transmitting means, said bearing assembly comprising:a bearing for rotatably supporting a shaft and including a bearing outer ring having a cylindrical outer surface;a bearing housing having a housing inner surface, wherein the bearing housing receives and supports the bearing; anda plurality of coaxial, axially spaced cam rings positioned between and in contact with the housing inner surface and with the bearing outer ring outer surface, wherein the cam rings are radially elastically deformable to allow a limited radial movement between the bearing housing inner surface and the bearing outer ring outer surface and include inner, circumferentially-spaced cam surfaces that contact the bearing outer ring outer surface and outer, circumferentially-spaced cam surfaces that contact the bearing housing inner surface, wherein the inner and outer cam surfaces are positioned radially opposite each other, wherein the inner and outer cam surfaces are in constant contact with the bearing outer ring outer surface and the bearing housing inner surface, respectively, and wherein the limited radial movement is between 0.1 mm and 0.02 mm.