Thrust ball bearings lubricated with biodegradable greases

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2010

Autores

cousseau, t (Autor) Outra; graca, b (Autor) Outra; campos, a (Autor) FEUP; seabra, j (Autor) FEUP

Ata de Conferência Internacional

Título: 17th International Colloquium Tribology 2010 - Solving Friction and Wear Problems

Páginas: 399-407

17th International Colloquium Tribology 2010 - Solving Friction and Wear Problems

Stuttgart, 19 January 2010 through 21 January 2010

Indexação

ISI Web of Knowledge

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-007-V00

Abstract (EN): Biodegradable greases start to become an option to replace conventional greases in rolling bearing lubrication. Two main reasons explain this: environmental awareness and the high mechanical and chemical performance of bio-greases. However, the performance of biodegradable greases is not yet well known, mainly in terms of rolling bearing wear and power loss. In this sense, a Four-Ball Machine was modified allowing testing rolling bearings lubricated with oil or grease. The internal friction torque and the operating temperatures can be continuously monitored to quantify the power loss and the heat evacuation for each lubricant tested. A 51107 thrust ball bearing was used to test six different types of greases. A friction torque model, developed by a rolling bearing manufacturer, was used and the corresponding friction coefficient of greases was determined through the correlation with the experimental results obtained. The bearing wear was also evaluated using quantitative and analytical techniques on grease samples obtained after testing.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9