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Lubricants 2015, 3(2), 155-163; doi:10.3390/lubricants3020155

Experimental Measurements of Journal Bearing Friction Using Mineral, Synthetic, and Bio-Based Lubricants

Machine Design Laboratory, Mechanical Engineering and Aeronautics Department, University of Patras, Patras 26504, Greece
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Academic Editors: Michel Fillon and Romeo P. Glovnea
Received: 24 November 2014 / Revised: 17 February 2015 / Accepted: 25 February 2015 / Published: 3 April 2015
(This article belongs to the Special Issue Friction and Lubrication of Bearings)
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Abstract

The environmental impact of many industrial and naval applications is becoming increasingly important. Journal bearings are crucial components related with the reliable, safe and environmentally friendly operation of rotating machinery in many applications, e.g., in hydroplants, ships, power generation stations. The maintenance activities in certain cases also have considerable environmental impact. Fortunately, it is relatively easy to reduce the impact by changing the way lubricants are being used. Selecting the proper lubricant is important to sharply reduce long-term costs. The best-fit product selection can mean longer lubricant life, reduced machine wear, reduced incipient power losses and improved safety. Suitable basestocks and additives reduce environmental impact. In this paper, three types of lubricants are used in order to examine their effects on the tribological behavior of journal bearings. A mineral oil, a synthetic oil and a bio-based lubricant are experimentally and analytically examined for several configurations of load and journal rotational velocity. The friction forces and the hydrodynamic friction coefficients are calculated and compared. This investigation can assist the correct choice of lubricant in journal bearings with minimized environmental footprint. View Full-Text
Keywords: journal bearing; biolubricant; environment journal bearing; biolubricant; environment
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Nikolakopoulos, P.G.; Bompos, D.A. Experimental Measurements of Journal Bearing Friction Using Mineral, Synthetic, and Bio-Based Lubricants. Lubricants 2015, 3, 155-163.

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