公开(公告)号：EP0796398B1

公开(公告)日：1998-08-26

申请号：EP95941701.5

申请日：1995-12-08

申请人： Sterling Fluid Systems (Germany) GmbH

发明人： BARANEK, Bodo ,  MANN, Ralf ,  LANDOWSKI, Rainer

IPC分类号： F16C13/00 ,  B21B27/02 ,  F16C17/22

CPC分类号： B21B27/035 ,  F16C13/00 ,  F16C17/22 ,  F16C33/043 ,  F16C33/08 ,  F16C35/063 ,  Y10S384/905

摘要： A device is proposed for centring a bearing bush (4) made of a material (such as a ceramic material) which is sensitive to tensile stress on a shaft (1) which at lower operational temperatures enjoys a degree of play relative to the bush (4). Correct centring of the bush (4) is ensured even in a higher temperature range by the provision of at least one centring ring (5) which is connected to the shaft (1) without play, is made of a material which by comparison with the bush is not sensitive to tensile stress, and acts on the bush (4) from outside to centre it. It is expedient to provide two centring rings (5), each one at the front face of the bush (4). To ensure that thermal expansion does not reduce the rotational pull of the bush (4) resulting from the clamping action between the centring rings, the thermal expansion of the components (5, 6) on the bush side should be roughly equal to that of the corresponding shaft sections.