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Wear characteristics with mixed lubrication conditions in a full scale journal bearing
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- Del Din, Massimo (author)
- ABB Stal AB, Dept. TMS, SE-612 82 Finspång, Sweden
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- Kassfeldt, Elisabet (author)
- Luleå tekniska universitet,Maskinelement
- ABB Stal AB, Dept TMS, SE-612 82 Finspång, Sweden Maskinelement (creator_code:org_t)
- 1999
- 1999
- English.
- In: Wear. - 0043-1648 .- 1873-2577. ; 232:2, s. 192-198
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Increased awareness of environmental problems has stressed the importance of switching from traditional lubricants to more environmentally friendly alternatives. Different investigations with standard test methods indicate that such a switch is possible without loss of lubricating power. The question arises if the statement above is true for industrial lubricating conditions, without laboratory cleanliness. This paper presents a study of friction and wear in a two grooved journal bearing at different shaft speeds, oil temperatures and contamination levels. A number of tests have been conducted combined with a theoretical analysis of film thickness and lubricating regime. The aim was to investigate whether an environmentally adapted rape seed-synthetic ester oil could replace a traditional mineral oil in a full scale application. The results show that the rape seed-synthetic ester oil gives significantly lower values of wear regardless of the operating conditions and there is also a tendency of lower values of frictional torque compared with the mineral oil. Mainly operating in the mixed lubrication regime, no signs of impending bearing failure have been registered, even though a large amount of silica particles added to the oil gave higher wear values than with uncontaminated oil.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Tribologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Tribology (hsv//eng)
Keyword
- Machine Elements
- Maskinelement
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- ref (subject category)
- art (subject category)
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