Effect of Temperature and Surface Roughness on the Tribological Behavior of Electric Motor Greases for Hybrid Bearing Materials
Greased bearings in electric motors (EMs) are subject to a wide range of operational requirements and corresponding micro-environments. Consequently, greases must function effectively in these conditions. Here, the tribological performance of four market-available EM greases was characterized by mea...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Lubricants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4442/9/6/59 |
| _version_ | 1827691609562546176 |
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| author | Daniel Sanchez Garrido Samuel Leventini Ashlie Martini |
| author_facet | Daniel Sanchez Garrido Samuel Leventini Ashlie Martini |
| author_sort | Daniel Sanchez Garrido |
| collection | DOAJ |
| description | Greased bearings in electric motors (EMs) are subject to a wide range of operational requirements and corresponding micro-environments. Consequently, greases must function effectively in these conditions. Here, the tribological performance of four market-available EM greases was characterized by measuring friction and wear of silicon nitride sliding on hardened 52100 steel. The EM greases evaluated had similar viscosity grades but different combinations of polyurea or lithium thickener with mineral or synthetic base oil. Measurements were performed at a range of temperature and surface roughness conditions to capture behavior in multiple lubrication regimes. Results enabled direct comparison of market-available products across different application-relevant metrics, and the analysis methods developed can be used as a baseline for future studies of EM grease performance. |
| first_indexed | 2024-03-10T11:05:04Z |
| format | Article |
| id | doaj.art-1b511b4472e54c6998413693a68d7846 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-10T11:05:04Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-1b511b4472e54c6998413693a68d78462023-11-21T21:09:58ZengMDPI AGLubricants2075-44422021-05-01965910.3390/lubricants9060059Effect of Temperature and Surface Roughness on the Tribological Behavior of Electric Motor Greases for Hybrid Bearing MaterialsDaniel Sanchez Garrido0Samuel Leventini1Ashlie Martini2Department of Mechanical Engineering, University of California Merced, 5200 N. Lake Rd., Merced, CA 95343, USADepartment of Mechanical Engineering, University of California Merced, 5200 N. Lake Rd., Merced, CA 95343, USADepartment of Mechanical Engineering, University of California Merced, 5200 N. Lake Rd., Merced, CA 95343, USAGreased bearings in electric motors (EMs) are subject to a wide range of operational requirements and corresponding micro-environments. Consequently, greases must function effectively in these conditions. Here, the tribological performance of four market-available EM greases was characterized by measuring friction and wear of silicon nitride sliding on hardened 52100 steel. The EM greases evaluated had similar viscosity grades but different combinations of polyurea or lithium thickener with mineral or synthetic base oil. Measurements were performed at a range of temperature and surface roughness conditions to capture behavior in multiple lubrication regimes. Results enabled direct comparison of market-available products across different application-relevant metrics, and the analysis methods developed can be used as a baseline for future studies of EM grease performance.https://www.mdpi.com/2075-4442/9/6/59greasehybrid bearingselectric vehicleselectric motorsfriction and wear |
| spellingShingle | Daniel Sanchez Garrido Samuel Leventini Ashlie Martini Effect of Temperature and Surface Roughness on the Tribological Behavior of Electric Motor Greases for Hybrid Bearing Materials Lubricants grease hybrid bearings electric vehicles electric motors friction and wear |
| title | Effect of Temperature and Surface Roughness on the Tribological Behavior of Electric Motor Greases for Hybrid Bearing Materials |
| title_full | Effect of Temperature and Surface Roughness on the Tribological Behavior of Electric Motor Greases for Hybrid Bearing Materials |
| title_fullStr | Effect of Temperature and Surface Roughness on the Tribological Behavior of Electric Motor Greases for Hybrid Bearing Materials |
| title_full_unstemmed | Effect of Temperature and Surface Roughness on the Tribological Behavior of Electric Motor Greases for Hybrid Bearing Materials |
| title_short | Effect of Temperature and Surface Roughness on the Tribological Behavior of Electric Motor Greases for Hybrid Bearing Materials |
| title_sort | effect of temperature and surface roughness on the tribological behavior of electric motor greases for hybrid bearing materials |
| topic | grease hybrid bearings electric vehicles electric motors friction and wear |
| url | https://www.mdpi.com/2075-4442/9/6/59 |
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