Rolling bearing

摘要

There is provided a rolling bearing which inhibits spalling of a rolling element and has a long service life even under rigorous environments. The rolling bearing comprises grease for lubricating rolling contact parts and/or sliding contact parts between a first raceway surface and a rolling elements and/or between a second raceway surface and a rolling elements, wherein the grease comprises a base oil, a thickener and an extreme pressure additive, the thickener is a diurea compound obtained by allowing an amine mixture comprising alkylphenylamine, alkyl group of which has 8 to 16 carbon atoms, and cyclohexylamine, to react with a diisocyanate compound, an amount of cyclohexylamine in the total amount of the alkylphenylamine and cyclohexylamine is from 91 to 99% by mole, and a reaction temperature of the extreme pressure additive with iron is 260° C. or lower.

主权项

1. A rolling bearing, comprising:
a first race member having a first raceway surface; a second race member having a second raceway surface; a plurality of rolling elements rotatably arranged between said first raceway surface and said second raceway surface; and grease for lubricating rolling contact parts and/or sliding contact parts between said first raceway surface and said rolling elements and/or between said second raceway surface and said rolling elements, wherein said grease comprises a base oil, a thickener and an extreme pressure additive, said thickener is a diurea compound obtained by allowing an amine mixture comprising alkylphenylamine, an alkyl group of which has 8 to 16 carbon atoms, and cyclohexylamine, to react with a diisocyanate compound, an amount of said cyclohexylamine in the total amount of alkylphenylamine, an alkyl group of which has 8 to 16 carbon atoms, and cyclohexylamine, is from 93 to 99% by mole, and a reaction temperature of said extreme pressure additive with iron is at most 260° C.