Thrust ball bearings lubricated with biodegradable greases

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

cousseau, t (Author) Other; graca, b (Author) Other; campos, a (Author) FEUP; seabra, j (Author) FEUP

Conference proceedings International

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

Pages: 399-407

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

Stuttgart, 19 January 2010 through 21 January 2010

Indexing

ISI Web of Knowledge

Scopus - 0 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9