Patent
Lubricant composition and bearing
TLDR
In this article, the authors provided a lubricant composition for use in a ball-and-roller bearing with a smaller diameter, and a ball and roller bearing with an intermediate diameter, where the base oil comprises a non-ester oil containing a synthesized hydrocarbon oil, and the thickener comprising a urea compound.Abstract:
There are provided a lubricant composition for use in a ball-and-roller bearing with a smaller diameter, and a ball-and-roller bearing with a smaller diameter. The lubricant composition comprises a base oil comprising a non-ester oil containing a synthesized hydrocarbon oil, and a thickener comprising a urea compound; wherein the urea compound is represented by the formula (I): R 1 —(NHCONH—R 2 )n (I) where R 1 is a group containing an aromatic hydrocarbon, R 2 is at least one hydrocarbon group selected from the group consisting of an alicyclic hydrocarbon group having 6 to 12 carbon atoms and an aliphatic hydrocarbon group having 6 to 20 carbon atoms, and n is 2 or 3; wherein the synthesized hydrocarbon oil has kinetic viscosity of 20 mm 2 /s or more and less than 80 mm 2 /s at 40° C.; and wherein the base oil comprises 50% by weight or more of the synthesized hydrocarbon oil based on the total weight of the base oil.read more
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