Base stock lubricant blends for enhanced micropitting protection
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United States of America Patent
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Mar 23, 2010
Grant Date -
Dec 7, 2006
app pub date -
Jun 6, 2006
filing date -
Jun 7, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A lubricant formulation and method of blending a lubricant formulation is disclosed. The lubricant formulation comprises at least two base stocks. The first base stock comprises a viscosity greater than 100 cSt, Kv100° C. The second base stock comprises a viscosity less than 10 cSt, Kv100° C. The lubricant formulation provides excellent micropitting protection for gears including large gears that are used in wind turbines. In addition, the lubricant may also have a viscosity greater than 38 cSt (Kv 100° C.), a viscosity index greater than 161 and micropitting protection level of a FVA 54 micropitting Test Fail Load Stage greater than 10.
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