Abstract: A device for the control of vibrations comprises a retainer resting on a base and a plurality of bearings disposed within the retainer. The bearings are arranged in a first layer and a second layer. The second layer is disposed on the first layer. The first layer comprises three or more bearings and the second layer comprising one or more bearings. Each bearing in the first layer is constrained on its bottom only by a substantially flat portion of the base, on its side by the retainer and is in contact with at least two adjacent bearings in the first layer. The bearings in the first layer support the bearing in the second layer. The retainer has a surface which is in substantially tangential contact with the bearings in the first layer.