| abstract |
An object of the present invention is to provide a rolling device having low torque, low noise, and excellent acoustic life. A grease composition containing a corrosion inhibitor comprising a heterocyclic compound and an extreme pressure additive comprising at least one of a metal dithiophosphate and a metal dithiocarbamate is sealed in a deep groove ball bearing. did. The content of the corrosion inhibitor is 0.03 to 1.5% by mass of the entire grease composition G, and the content of the metal component in the extreme pressure additive is 0.027 to 0.3% by mass of the entire grease composition G. % [Selection] Fig. 2 |