Rotor main bearing for wind power plant, has roller bodies arranged between outer path and inner path in plastic cage segments and comprising recess that is opened toward two front sides of roller bodies

摘要

The bearing has roller bodies (1) arranged between outer and inner paths (8) in plastic cage segments. The bodies comprise a recess (7) opened toward front sides (5, 6) of the bodies. The recess is formed by a through-hole or a blind hole. The through-hole or the blind hole includes a constant or variable cross-section. The segments include two circumferential and connecting bars, where the circumferential bars run along circumferential direction of the bearing. The bars comprise a pocket to accommodate the bodies. The through-hole is concentrically arranged to a rotation axis of the bodies.