RADIAL ANTI-FRICTION BEARING, PARTICULARLY CYLINDER ROLLER BEARING FOR THE SUPPORT OF SHAFTS IN WIND POWER GEARBOXES

摘要

The invention relates to a radial anti-friction bearing (1), substantially comprising an outer bearing race (2) provided with an inner raceway (3) and an inner bearing race (4) provided with an outer raceway (5), and a plurality of cylinder rollers (6) that roll on the raceways (3, 5) between the bearing races (2, 4), the rollers being held at equal distances to each other in the peripheral direction by a bearing cage (7). In order to prevent slip, a plurality of cylinder rollers (6) between the cylinder rollers (6) and the bearing races (2, 4) are replaced by hollow rollers (8), which have a larger outside diameter and a lower modulus of elasticity than the cylinder rollers (6) in order to ensure permanent contact with the bearing races (2, 4) in the load-free state of the radial anti-friction bearing (1), and thus ensuring a continuous drive of the bearing cage (7) and the cylinder rollers (6) at a kinematic rotational speed. According to the invention, the dimensions of the bearing races (2, 4) and of the cylinder rollers (6) and hollow rollers (8) are configured such that both the cylinder rollers (6) and the hollow rollers (8) initially have a defined radial bearing clearance (RL_Z, RL_H) in the non-installed state of the radial anti-friction bearing (1), and that the pretension necessary for the continuous drive of the bearing cage (7) can be adjusted on the hollow rollers (8) only once the radial anti-friction bearing (1) has been installed, while simultaneously reducing the radial bearing clearance (RL_Z) at the cylinder rollers (6).