| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller bearing having high fretting resistance and durability. SOLUTION: The roller bearing comprises an inner ring 12 having an inner ring track on the outer circumferential surface, an outer ring 14 having an outer ring track on the inner circumferential surface, multiple balls 16 rollably set in between the inner ring track surface 12a of the inner ring 12 and the outer ring track surface 14a of the outer ring 14 and a holder 18 holding the respective balls 16. A grease composition is sealed up in this rolling bearing. The grease composition comprises a base oil, a thickening agent and an additive, wherein the additive contains a spherical polymer and the content of the spherical polymer is 0.1-10 wt.% based on the whole grease composition. COPYRIGHT: (C)2007,JPO&INPIT |
