Category: EHD

Film Thickness and Traction Curves of Wind Turbine Gear Oils

The film thickness and the traction curves of four fully formulated wind turbine gear oils were measured on a ball-on-disc device. All oils have the same viscosity grade (ISO VG 320) and different formulations: ester, mineral, PAO and mineral+PAMA.

Film thickness and traction coefficient results will be presented. The film thickness measurements were compared with predictions using film thickness equations from the literature.

Keywords: Wind turbine gear oils, Film thickness, Coefficient of friction, Stribeck curve
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