The invention relates to a radial roller bearing which is embodied as a single-grooved grooved ball bearing. The bearing bodies are embodied as spherical disks having two symmetrical, parallel lateral surfaces from a spherical base shape. According to the invention, the radial roller bearing has a larger contact surface of the spherical disk in relation to the bearing body tracks thereof as well as an increased number of bearing bodies, wherein one part of the width (bk) of the spherical disks between the lateral surfaces thereof is larger than the distance (aL) between the inner side of the external bearing ring and the external side of the inner bearing ring but equal to or smaller than the width (bWI), bWA) of the bearing body tracks and also, the use of the spherical disks in the radial roller bearing takes place according to an eccentric mounting method wherein the spherical disks are arranged in a transversal manner in the bearing body tracks and are arranged on top of each other in relation to the lateral surfaces thereof.