Experimental Analysis of Rolling Torque and Thermal Inlet Shear Heating in Tapered Roller Bearings
The investigation in this article focuses on the rolling resistance torque and thermal inlet shear factor in tapered roller bearings (TRBs) through systematic experiments using a modular test setup. TRBs typically operate under Elastohydrodynamic Lubrication (EHL) conditions. At sufficiently high sp...
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| Format: | Article |
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MDPI AG
2023-08-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/11/8/801 |
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| author | Manjunath Manjunath Dieter Fauconnier Wouter Ost Patrick De Baets |
| author_facet | Manjunath Manjunath Dieter Fauconnier Wouter Ost Patrick De Baets |
| author_sort | Manjunath Manjunath |
| collection | DOAJ |
| description | The investigation in this article focuses on the rolling resistance torque and thermal inlet shear factor in tapered roller bearings (TRBs) through systematic experiments using a modular test setup. TRBs typically operate under Elastohydrodynamic Lubrication (EHL) conditions. At sufficiently high speeds, the majority of rolling friction is due to a significant shift of the pressure centre in the EHL contact. While at lower speeds, sliding friction in the roller-rib contact becomes dominant, which operates under mixed lubrication conditions. Limited literature exists on the impact of inlet shear heating on effective lubricant temperature (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>T</mi></mrow><mrow><mi>i</mi><mi>n</mi><mo>_</mo><mi>c</mi></mrow></msub></mrow></semantics></math></inline-formula>) and rolling friction in TRBs. To fill this gap, experimental measurements of the total frictional torque under axial loading at different speeds and oil temperatures are performed. With existing models for different friction contributions described in the literature, the rolling resistance due to EHL has been determined for various operating conditions. The effects of dimension-less speed (<i>U</i>), material (<i>G</i>), and load (<i>W</i>) parameters have also been investigated. Under fully flooded conditions, it was observed that the influence of material (<i>G</i>) and load (<i>W</i>) parameters on rolling friction is minor, while the impact of velocity (<i>U</i>) is significant. In the context of rolling resistance, the heating due to shear of the lubricant in the inlet zone plays a significant role. For higher rotational velocities, the estimated rotational torque reduction resulting from inlet shear heating was found to be approximately 6–8%. |
| first_indexed | 2024-03-10T23:47:48Z |
| format | Article |
| id | doaj.art-aada5b8cfc1041cfbe1bd04cb6dee149 |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-10T23:47:48Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-aada5b8cfc1041cfbe1bd04cb6dee1492023-11-19T01:56:52ZengMDPI AGMachines2075-17022023-08-0111880110.3390/machines11080801Experimental Analysis of Rolling Torque and Thermal Inlet Shear Heating in Tapered Roller BearingsManjunath Manjunath0Dieter Fauconnier1Wouter Ost2Patrick De Baets3Soete Laboratory, Department of Electromechanical, Systems & Metal Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 903, 9052 Ghent, BelgiumSoete Laboratory, Department of Electromechanical, Systems & Metal Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 903, 9052 Ghent, BelgiumSoete Laboratory, Department of Electromechanical, Systems & Metal Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 903, 9052 Ghent, BelgiumSoete Laboratory, Department of Electromechanical, Systems & Metal Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 903, 9052 Ghent, BelgiumThe investigation in this article focuses on the rolling resistance torque and thermal inlet shear factor in tapered roller bearings (TRBs) through systematic experiments using a modular test setup. TRBs typically operate under Elastohydrodynamic Lubrication (EHL) conditions. At sufficiently high speeds, the majority of rolling friction is due to a significant shift of the pressure centre in the EHL contact. While at lower speeds, sliding friction in the roller-rib contact becomes dominant, which operates under mixed lubrication conditions. Limited literature exists on the impact of inlet shear heating on effective lubricant temperature (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>T</mi></mrow><mrow><mi>i</mi><mi>n</mi><mo>_</mo><mi>c</mi></mrow></msub></mrow></semantics></math></inline-formula>) and rolling friction in TRBs. To fill this gap, experimental measurements of the total frictional torque under axial loading at different speeds and oil temperatures are performed. With existing models for different friction contributions described in the literature, the rolling resistance due to EHL has been determined for various operating conditions. The effects of dimension-less speed (<i>U</i>), material (<i>G</i>), and load (<i>W</i>) parameters have also been investigated. Under fully flooded conditions, it was observed that the influence of material (<i>G</i>) and load (<i>W</i>) parameters on rolling friction is minor, while the impact of velocity (<i>U</i>) is significant. In the context of rolling resistance, the heating due to shear of the lubricant in the inlet zone plays a significant role. For higher rotational velocities, the estimated rotational torque reduction resulting from inlet shear heating was found to be approximately 6–8%.https://www.mdpi.com/2075-1702/11/8/801tapered roller bearingsrolling frictionthermal inlet shear factor |
| spellingShingle | Manjunath Manjunath Dieter Fauconnier Wouter Ost Patrick De Baets Experimental Analysis of Rolling Torque and Thermal Inlet Shear Heating in Tapered Roller Bearings Machines tapered roller bearings rolling friction thermal inlet shear factor |
| title | Experimental Analysis of Rolling Torque and Thermal Inlet Shear Heating in Tapered Roller Bearings |
| title_full | Experimental Analysis of Rolling Torque and Thermal Inlet Shear Heating in Tapered Roller Bearings |
| title_fullStr | Experimental Analysis of Rolling Torque and Thermal Inlet Shear Heating in Tapered Roller Bearings |
| title_full_unstemmed | Experimental Analysis of Rolling Torque and Thermal Inlet Shear Heating in Tapered Roller Bearings |
| title_short | Experimental Analysis of Rolling Torque and Thermal Inlet Shear Heating in Tapered Roller Bearings |
| title_sort | experimental analysis of rolling torque and thermal inlet shear heating in tapered roller bearings |
| topic | tapered roller bearings rolling friction thermal inlet shear factor |
| url | https://www.mdpi.com/2075-1702/11/8/801 |
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