| abstract |
Provided is a rolling bearing for a dredger that can suppress the occurrence of white structure peeling and corrosion and can maintain good lubrication for a long time even when moisture is mixed. A rolling bearing incorporated in a forward boat or a dredging robot, wherein a plurality of rolling elements are rotatably arranged between an inner ring and an outer ring, and formed between the inner ring and the outer ring. In the space where the rolling elements are disposed, a base oil consisting of at least one selected from mineral oil and synthetic oil and a thickener is included, and oleoyl sarcosine is added in an amount of 0.1 to 0.1 of the total amount of grease. A rolling bearing for dredgers characterized in that a grease composition containing 5% by mass is enclosed. [Selection] Figure 3 |