Details
| Original language | English |
|---|---|
| Title of host publication | Bearing Steel Technologies |
| Subtitle of host publication | 10th Volume, Advances in Steel Technologies for Rolling Bearings |
| Editors | John M. Beswick |
| Publisher | ASTM International |
| Pages | 564-589 |
| Number of pages | 26 |
| ISBN (electronic) | 978-0-8031-7606-5 |
| ISBN (print) | 978-0-8031-7605-8 |
| Publication status | Published - Feb 2015 |
| Event | 10th ASTM International Symposium on Bearing Steel Technologies - Toronto, Canada Duration: 6 May 2014 → 8 May 2014 |
Publication series
| Name | ASTM INTERNATIONAL Selected Technical Papers |
|---|---|
| Publisher | ASTM INTERNATIONAL |
| Volume | 1580 |
| ISSN (Print) | 0066-0558 |
| ISSN (electronic) | 2160-2050 |
Abstract
The current emphasis on "green" fuel efficient technologies and additional restrictions, such as lead free bearings, have increased the attractiveness of alternative bearing technologies like rolling bearings. A major factor for this development is caused by the circumstance that further decrease of friction and continued reliability of journal bearings increases costs to an intolerable level. Investigations show that a replacement of journal bearings with roller bearings reduces fuel consumption of combustion engines in the range of 2 %-5 %. Due to limitations in the processing of 100Cr6 bearing steel (SAE 52100), however, induction hardend hypo eutectoid bearing steel attract notice. No publicly accessible data for service life rating is available for these steel grades. To determine the service life limiting effects for these grades, tests are conducted and, due to exclusively tribological failures, a material response approach is taken to determine the subsurface failure. Presently, applications with strong and repeated impact loads, such as combustion engines, have seen the widespread use of journal bearings for about a century. Especially in the case of combustion engines, long periods of next to no load are interrupted by periods of strong loads. Moreover, in the case of combustion engines, some bearings experience rapid changes of the direction of force while the maximum load is being applied. The long-time effects like a friction increase because wear and material responses are not thoroughly investigated at present. The current work proposes a novel method to test the long-time behaviour of rolling bearings at very high impact loads. The method is realised by a test bench specifically designed to create reproducible impact loads on rotating bearings. Special care has been taken to ensure the impact loads are being induced at the same spot over an average run time of 5 × 108 revolutions. During a test run, vibration, torque, grease and lubrication temperature are being monitored and controlled.
Keywords
- C56, Hypo eutecoid, Material response, Test rig
ASJC Scopus subject areas
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Bearing Steel Technologies: 10th Volume, Advances in Steel Technologies for Rolling Bearings. ed. / John M. Beswick. ASTM International, 2015. p. 564-589 (ASTM INTERNATIONAL Selected Technical Papers; Vol. 1580).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Subsurface material response of hypo eutectoid bearing steels for use in energy saving rolling bearings as a substitute for journal bearings in combustion engines
AU - Sircar, Sager Dave
AU - Gegner, Jürgen
AU - Lang, Karl Heinz
AU - Poll, Gerhard
AU - Joos, Rainer
PY - 2015/2
Y1 - 2015/2
N2 - The current emphasis on "green" fuel efficient technologies and additional restrictions, such as lead free bearings, have increased the attractiveness of alternative bearing technologies like rolling bearings. A major factor for this development is caused by the circumstance that further decrease of friction and continued reliability of journal bearings increases costs to an intolerable level. Investigations show that a replacement of journal bearings with roller bearings reduces fuel consumption of combustion engines in the range of 2 %-5 %. Due to limitations in the processing of 100Cr6 bearing steel (SAE 52100), however, induction hardend hypo eutectoid bearing steel attract notice. No publicly accessible data for service life rating is available for these steel grades. To determine the service life limiting effects for these grades, tests are conducted and, due to exclusively tribological failures, a material response approach is taken to determine the subsurface failure. Presently, applications with strong and repeated impact loads, such as combustion engines, have seen the widespread use of journal bearings for about a century. Especially in the case of combustion engines, long periods of next to no load are interrupted by periods of strong loads. Moreover, in the case of combustion engines, some bearings experience rapid changes of the direction of force while the maximum load is being applied. The long-time effects like a friction increase because wear and material responses are not thoroughly investigated at present. The current work proposes a novel method to test the long-time behaviour of rolling bearings at very high impact loads. The method is realised by a test bench specifically designed to create reproducible impact loads on rotating bearings. Special care has been taken to ensure the impact loads are being induced at the same spot over an average run time of 5 × 108 revolutions. During a test run, vibration, torque, grease and lubrication temperature are being monitored and controlled.
AB - The current emphasis on "green" fuel efficient technologies and additional restrictions, such as lead free bearings, have increased the attractiveness of alternative bearing technologies like rolling bearings. A major factor for this development is caused by the circumstance that further decrease of friction and continued reliability of journal bearings increases costs to an intolerable level. Investigations show that a replacement of journal bearings with roller bearings reduces fuel consumption of combustion engines in the range of 2 %-5 %. Due to limitations in the processing of 100Cr6 bearing steel (SAE 52100), however, induction hardend hypo eutectoid bearing steel attract notice. No publicly accessible data for service life rating is available for these steel grades. To determine the service life limiting effects for these grades, tests are conducted and, due to exclusively tribological failures, a material response approach is taken to determine the subsurface failure. Presently, applications with strong and repeated impact loads, such as combustion engines, have seen the widespread use of journal bearings for about a century. Especially in the case of combustion engines, long periods of next to no load are interrupted by periods of strong loads. Moreover, in the case of combustion engines, some bearings experience rapid changes of the direction of force while the maximum load is being applied. The long-time effects like a friction increase because wear and material responses are not thoroughly investigated at present. The current work proposes a novel method to test the long-time behaviour of rolling bearings at very high impact loads. The method is realised by a test bench specifically designed to create reproducible impact loads on rotating bearings. Special care has been taken to ensure the impact loads are being induced at the same spot over an average run time of 5 × 108 revolutions. During a test run, vibration, torque, grease and lubrication temperature are being monitored and controlled.
KW - C56
KW - Hypo eutecoid
KW - Material response
KW - Test rig
UR - http://www.scopus.com/inward/record.url?scp=84930340161&partnerID=8YFLogxK
U2 - 10.1520/STP158020140102
DO - 10.1520/STP158020140102
M3 - Conference contribution
AN - SCOPUS:84930340161
SN - 978-0-8031-7605-8
T3 - ASTM INTERNATIONAL Selected Technical Papers
SP - 564
EP - 589
BT - Bearing Steel Technologies
A2 - Beswick, John M.
PB - ASTM International
T2 - 10th ASTM International Symposium on Bearing Steel Technologies
Y2 - 6 May 2014 through 8 May 2014
ER -