Friction torque of thrust ball bearings lubricated with wind turbine gear oils

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Ramiro C Martins (Author) FEUP; Carlos M C G Fernandes (Author) Other; Jorge H O Seabra (Author) FEUP

Journal

Title: Tribology International

Vol. 58

Pages: 47-54

ISSN: 0301-679X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 26 Citations

Scopus - 39 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-002-138

DOI: 10.1016/j.triboint.2012.09.005

Abstract (EN): Planetary gearboxes used in wind turbines very often have premature bearing and gear failures, some of them related to the lubricants used. Five fully formulated wind turbine gear oils with the same viscosity grade and different formulations were selected and their physical characterization was performed. The lubricant tribological behaviour in a thrust ball bearing was analyzed. A modified Four-Ball Machine was used to assemble the bearings. They were submitted to an axial load and the tests were performed at velocities ranging between 150 and 1500 rpm. Experimental results for the operating temperatures and for the internal friction torque are presented.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8