| 摘要 |
The invention relates to a rotary lead-through for the coolant inflow and outflow of a back-up and/or conveyor roller ( 1 ) which is held in a bearing arrangement at the end at least by means of bearing journals ( 10 ) located in bearing blocks ( 11 ), in particular in a continuous casting plant. To compensate for the axial movement and oscillating movement of the back-up and/or conveyor roller during operation, the bearing ( 9 ) at one end, to which the coolant inflow line and the coolant outflow line is connected, is a fixed axial bearing which is nevertheless able to absorb oscillating movement, while the other bearing is a detached axial bearing. In this way it is possible to provide on the fixed axial bearing a rotary lead-through, without a compensator, between the bearing journal ( 10 ) and a covering plate ( 12 ), wherein a fixed sleeve ( 16 ), sealed in the bearing journal ( 10 ), is sealed at the covering plate ( 12 ) by means of a rotary shaft sealing ring ( 18 ) which makes it possible for relative rotary movement and oscillating movement to occur. |
