Grease-sealed rolling bearing with rotary outer race

Abstract

A grease-sealed rolling bearing with a rotary outer race is provided of which the lubricating grease has a long life, and which produces less cold-time noise and can effectively prevent leakage of grease. In an outer-race-rotating type of rolling bearing A for use e.g. as a pulley bearing, lubricating grease G is sealed which contains a base oil having a dynamic viscosity at 40° C. of 13 to 73 cSt and which is thickened with a thickening agent of urea family so that the grease is present in an amount of not less than 20% of the entire spatial volume of the interior of the rolling bearing, and not more than 80% of the stationary spatial volume of the interior of the rolling bearing.

Dependencies are inferred from the claim text.