Strand guiding roller for guiding a metallic strand in a continuous casting facility , comprising - a fixed axle ; - at least one roller shell which coaxially surrounds an axle portion of the axle ; - for each roller shell at least one cooling duct , which runs along the internal face of the roller shell , for receiving a coolant and for cooling the roller shell ; - and for each roller shell at least one roller bearing for mounting the roller shell so as to be rotatable about the axle , said roller bearing being disposed between the axle portion that is surrounded by the roller shell and the roller shell ; - wherein the roller bearing is adjacent to a cooling duct and has a bearing interior space which is permeable to the coolant and is open towards the cooling duct so that the roller bearing during operation is passed through by a flow of the coolant; - wherein the roller bearing has an outer race (7.1) which bears on a roller shell and encircles the axle , an inner race (7.2) which bears on the axle and encircles the axle , and a plurality of rolling members (7.3) which are disposed between the outer race (7.1) and the inner race (7.2), characterized in that the roller bearing is made from a corrosion-resistant steel and is embodied for a lubricant-free operation; in that at least one element of the group of outer race (7.1), inner race (7.2) and rolling member (7.3) of at least one roller bearing is configured to be elastically deformable in at least one direction orthogonal to a longitudinal axis of the axle ; and in that at least one cooling duct along an internal surface of a roller shell runs helically about the axle . - a fixed axle ; - at least one roller shell which coaxially surrounds an axle portion of the axle ; - for each roller shell at least one cooling duct , which runs along the internal face of the roller shell , for receiving a coolant and for cooling the roller shell ; - and for each roller shell at least one roller bearing for mounting the roller shell so as to be rotatable about the axle , said roller bearing being disposed between the axle portion that is surrounded by the roller shell and the roller shell ; - wherein the roller bearing is adjacent to a cooling duct and has a bearing interior space which is permeable to the coolant and is open towards the cooling duct so that the roller bearing during operation is passed through by a flow of the coolant; - wherein the roller bearing has an outer race (7.1) which bears on a roller shell and encircles the axle , an inner race (7.2) which bears on the axle and encircles the axle , and a plurality of rolling members (7.3) which are disposed between the outer race (7.1) and the inner race (7.2), characterized in that the roller bearing is made from a corrosion-resistant steel and is embodied for a lubricant-free operation; in that at least one element of the group of outer race (7.1), inner race (7.2) and rolling member (7.3) of at least one roller bearing is configured to be elastically deformable in at least one direction orthogonal to a longitudinal axis of the axle ; and in that at least one cooling duct along an internal surface of a roller shell runs helically about the axle . <EOS>