| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a roller bearing for a steel rolling machine exhibiting excellent water resistance and keeping good bearing function for a long period of time, and a grease composition used for the bearing. <P>SOLUTION: This roller bearing 100 for a steel rolling machine is configured such that: a plurality of rolling elements 30 are provided freely rollably between an inner ring 10 and an outer ring 20, and a lubricating grease composition G is enclosed therein. The grease composition G includes a base oil, a carboxylic acid-based antirust agent, a carboxylate-based antirust agent and an amine-based antirust agent, where the base oil has kinetic viscosity of 200-400 mm<SP POS="POST">2</SP>/s and consistency as the grease composition is 300-400. <P>COPYRIGHT: (C)2013,JPO&INPIT |
