| abstract |
The present invention provides a rolling bearing for a steel rolling mill capable of exhibiting excellent water resistance and maintaining a good bearing function for a long period of time, and a grease composition used therefor. A rolling bearing 100 for a steel rolling mill in which a plurality of rolling elements 30 are rotatably arranged between an inner ring 10 and an outer ring 20 and a lubricating grease composition G is enclosed. . The grease composition G contains a base rubonic acid-based rust preventive, a power rubonic acid-based rust preventive, and an amine rust preventive, and the base oil has a kinematic viscosity of 200 mm 2 / s or more and 400 mm. 2 / s or less, and the consistency as the grease composition is 300 or more and 400 or less. [Selection] Figure 1 |