Film thickness and traction curves of wind turbine gear oils. (June 2015)

• Record Type: Journal Article
• Authors: Fernandes, Carlos M.C.G.; Marques, Pedro M.T.; Martins, Ramiro C.; Seabra, Jorge H.O.
• Is Part Of: Tribology international. Volume 86(2015)
• Page Start: 1
• Page End: 9
• Publication Date: 2015-06
• Subjects: Wind turbine gear oils -- Film thickness -- Coefficient of friction -- Stribeck curve; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2015.01.014
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: 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. Abstract : Highlights: Four wind turbine gear oils were selected. Film thickness measurements at different temperatures. Torque loss was measured for a type C40 FZG gears. Traction coefficient and Stribeck curves.