Patent ID: 8025443
Filing Date: 2011-09-27
Classification: B04B,F16C

Abstract:
1. A bearing device for supporting a shaft, which is rotatable about an axis of rotation (x) in a frame, whereby the bearing device comprises: a rotatable inner ring connected to the shaft, a non- rotatable outer ring connected to the frame, and at least one row of rolling elements which are disposed in a space formed in the bearing device between the rotatable inner ring and the non- rotatable outer ring, and whereby during operation the row of rolling elements is adapted to running partly in a first rolling track disposed in an element of the bearing device which is connected to the inner ring, the latter being rotatable with the shaft, and partly in a second rolling track disposed in an element of the bearing device which is connected to the non-rotatable outer ring, which bearing device also comprises a reservoir for lubricating oil and means for creating an oil mist from the lubricating oil from this reservoir and means for causing the oil mist to flow past and in lubricating contact with the rolling elements and the rolling tracks, the rotatable inner ring being sealed from the non-rotatable outer ring by seals and forming together with the non- rotatable outer ring a closed bearing unit in which are disposed the rolling elements, the first rolling track, the second rolling track, the reservoir for lubricating oil, said means for creating during operation the oil mist from the lubricating oil drops from this reservoir, means for causing the oil mist to flow axially past and in lubricating contact with the rolling elements and the rolling tracks, and the space in which the rolling elements are disposed constitutes a first flow duct section which extends axially from one side of the rolling elements axially past the rolling elements to the axially opposite side of the rolling elements, and which, together with a second flow duct section formed in the outer ring and connected to the first flow duct section on both axial sides of the rolling elements, constitutes a circulation flow circuit for oil mist during operation, which circulation flow circuit communicates with the inside of the reservoir for lubricating oil.