Lubricating oil composition, and precision reduction gear using same
AssigneeIdemitsu Kosan Co., Ltd.
InventorTakuya ONO
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Abstract
Provided are a lubricating oil composition containing a base oil and a specific thiophosphate compound (A) and not substantially containing a molybdenum-based, and a precision reduction gear using the lubricating oil composition. The lubricating oil composition and the precision reduction gear using it exhibit excellent wear resistance and can prevent sludge generation in a broad range of contact pressures ranging from high to low.
Claims13
A lubricating oil composition, comprising a base oil and a thiophosphate compound (A) represented by the following general formula (I) and not substantially containing a molybdenum-based compound:
- wherein R1, R2 and R3 each independently represent an aryl group having 6 to 12 ring carbon atoms, and the aryl group may be substituted with an alkyl group having 1 to 3 carbon atoms.
A method for producing a lubricating oil composition, the method comprising blending a base oil and a thiophosphate compound (A) represented by the following general formula (I), but not comprising a step of blending a molybdenum-based compound:
- to obtain the lubricating oil composition, wherein R1, R2 and R3 each independently represent an aryl group having 6 to 12 ring carbon atoms, and the aryl group may be substituted with an alkyl group having 1 to 3 carbon atoms.
Dependencies are inferred from the claim text.