Rotatable lead-through

A device for connecting of a coolant feed to a roller of continuous casting plants, comprising:

• a bearing block, comprising journals and a roller bearing, wherein said bearing block is configured to mount on the roller by way of said journals in said bearing block in said roller bearing;
• a bearing block cover, being fixed on said bearing block, wherein said bearing block cover covers said roller bearing and said journals;
• a first component group comprising a flange unit having a flange configured to be coupled to the roller, an elastic sleeve being coupled to said flange, and a first sealing element being coupled to said elastic sleeve and being rotatable therewith, said first sealing element having a first sealing surface;
• a second component group comprising said bearing block cover and a second sealing element having a second sealing surface running on said first sealing surface and being supported by said bearing block cover;
• an axial bore penetrating said elastic sleeve and said bearing block cover and permitting the feeding of coolant into the roller through at least one of said journals;
• wherein the sealing surfaces of the sealing elements are perpendicular to a rotational axis of the roller;
• and wherein said second sealing element is formed as a sliding ring on said bearing block cover;
• and
• a connection fitting being fixed to said bearing block cover and configured to receive a fluid and to allow fluid flow towards the roller;
• a pressure plate coupled to said bearing block cover;
• wherein said sliding ring on said bearing block cover is supported by said pressure plate coupled to said bearing block cover.