| abstract |
Provided is a rolling device that is difficult to cause grease leakage even when used at a high temperature for a long time, has an excellent seizure life, and is suitable for rotating parts and sliding parts of equipment used at high temperature and high speed. SOLUTION: A diurea compound A and a diurea compound B, each having a specific molecular structure, are added to a base oil composed of at least one of dialkyl diphenyl ether, ester synthetic oil, and poly α-olefin oil, respectively. = 50 to 90: A rolling device in which a diurea grease composition containing a thickener mixed at 50 to 10 (mol%) in a proportion of 10 to 30% by mass of the total amount of grease is enclosed. [Selection] Figure 1 |