The present invention provides lubricating grease which is excellent in durability at a high temperature, restrains a reaction from occurring between fluorine and steel, and has a long life; and a rolling bearing in which the lubricating grease is enclosed. The lubricating grease contains perfluoro polyether oil as a base oil thereof and fluorocarbon resin powder as a thickener thereof. The lubricating grease further contains an additive containing a substance capable of forming a film on a metal surface. The substance is a diurea compound having an -NH-bond in a molecular structure thereof, an organic-acidmetal salt such as sodium sebacate, molybdate such as potassium molybdate or sodium molybdate, or a bismuth-containing compound such as bismuth sulfate. The rolling bearing has an inner ring and an outer ring disposed concentrically with each other, a plurality of rolling elements interposed between the inner ring and the outer ring, and a retainer dividedly holding the rolling elements. The lubricating grease is enclosed on the periphery of the rolling elements.
本发明提供了在高温下耐久性极佳、可抑制
氟与钢之间发生反应且使用寿命长的润滑脂,以及封装该润滑脂的滚动轴承。润滑脂含有作为基础油的
全氟聚醚油和作为稠化剂的碳
氟化合物
树脂粉末。润滑脂还含有一种添加剂,其中含有一种能在
金属表面形成油膜的物质。该物质是分子结构中具有-NH 键的二
脲化合物、有机-酸
金属盐(如
癸二酸钠)、
钼酸盐(如
钼酸
钾或
钼酸
钠)或含
铋化合物(如
硫酸铋)。滚动轴承具有彼此同心设置的内圈和外圈、内圈和外圈之间的多个滚动体以及分隔固定滚动体的保持架。润滑脂封闭在滚动体的外围。