| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-torque low-noise ball bearing excellent in sound life. SOLUTION: In the ball bearing equipped with an inner ring 1, an outer ring 2, a rolling element 3, a cage 4 and a grease composition-filling member 5, a grease composition is filled into a gap S formed by the inner ring 1, the outer ring 2 and the rolling element 3, wherein the grease composition contains a base oil comprising an ester oil, a metal soap thickener and a glycerine fatty acid ester in an amount corresponding to 0.5-5.0 mass% of the total mass of the composition. COPYRIGHT: (C)2006,JPO&NCIPI |
