Patent ID: 8157452

Claim:
A radial roller bearing for a bearing of shafts in wind power transmissions, comprising: an outer hearing ring having an inner raceway; an inner bearing ring being arranged coaxially with respect thereto having an outer raceway; a bearing cage; a multiplicity of roller bodies rolling between the outer bearing ring and the inner bearing ring on the inner raceway and the outer raceway being and held at uniform distances from one another in a circumferential direction by the bearing cage; and hollow rollers interspersed between the roller bodies to avoid slip between the roller bodies and the outer hearing ring and the inner bearing ring, the hollow rollers having an inner envelope surface, a slightly larger diameter and a lower modulus of elasticity than the roller bodies, ensuring, in a load-free state of the radial roller bearing, a continuous contact with the outer bearing ring and the inner bearing ring and a continuous drive for the bearing cage and for the roller bodies at a kinematic rotation speed, wherein the hollow rollers have an increased bending fatigue strength than known hollow rollers, and the inner envelope surfaces are formed with a maximum surface roughness, which avoids local stress peaks of R z ≦25 μm, without any grooves in an axial direction.