Tribological Evaluation and Model of Wear Behavior in the Boundary Lubrication of the Contact Surfaces of Cycloidal Reducers
Cycloidal reducers are widely used in precision drive systems due to their reduced backlash in meshing and compact design. However, their operational durability is limited by surface wear and lubricant degradation under elevated contact loads and boundary lubrication conditions. This study introduce...
| Published in: | Lubricants |
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| Main Authors: | , , , , , , |
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-06-01
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| Online Access: | https://www.mdpi.com/2075-4442/13/6/268 |
| _version_ | 1849473186287058944 |
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| author | Juozas Padgurskas Oleksandr Dykha Raimundas Rukuiža Darius Volskis Rima Mickevičienė Giorgi Abramishvili Jumber Iosebidze |
| author_facet | Juozas Padgurskas Oleksandr Dykha Raimundas Rukuiža Darius Volskis Rima Mickevičienė Giorgi Abramishvili Jumber Iosebidze |
| author_sort | Juozas Padgurskas |
| collection | DOAJ |
| container_title | Lubricants |
| description | Cycloidal reducers are widely used in precision drive systems due to their reduced backlash in meshing and compact design. However, their operational durability is limited by surface wear and lubricant degradation under elevated contact loads and boundary lubrication conditions. This study introduces a modified wear prediction model based on four-ball tribological testing, specifically adapted to simulate the complex tribological conditions in cycloidal gear contacts. The model incorporates the total acid number (TAN) and thermal conductivity coefficient of the lubricant as dimensionless factors, enabling a dynamic prediction of wear intensity as the lubrication degrades. This innovation allows an accurate estimation of service life and reliability in high-load, small-contact-area mechanical systems and offers a practical diagnostic tool for the predictive maintenance of gear transmissions. |
| format | Article |
| id | doaj-art-e301e6d05a5b4b8a93fec0e5f31fc714 |
| institution | Directory of Open Access Journals |
| issn | 2075-4442 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| spelling | doaj-art-e301e6d05a5b4b8a93fec0e5f31fc7142025-08-20T03:16:33ZengMDPI AGLubricants2075-44422025-06-0113626810.3390/lubricants13060268Tribological Evaluation and Model of Wear Behavior in the Boundary Lubrication of the Contact Surfaces of Cycloidal ReducersJuozas Padgurskas0Oleksandr Dykha1Raimundas Rukuiža2Darius Volskis3Rima Mickevičienė4Giorgi Abramishvili5Jumber Iosebidze6Department of Mechanical, Energy and Biotechnology Engineering, Faculty of Engineering, Vytautas Magnus University, 53361 Kauno r., LithuaniaDepartment of Tribology, Automobiles and Materials Science, Khmelnytskyi National University, 29000 Khmelnytskyi, UkraineDepartment of Mechanical, Energy and Biotechnology Engineering, Faculty of Engineering, Vytautas Magnus University, 53361 Kauno r., LithuaniaDepartment of Mechanical, Energy and Biotechnology Engineering, Faculty of Engineering, Vytautas Magnus University, 53361 Kauno r., LithuaniaDepartment of Marine Engineering, Faculty of Marine Technology and Natural Sciences, Klaipėda University, 92294 Klaipėda, LithuaniaDepartment of Road Transport and Logistics, Faculty of Transportation and Mechanical Engineering, Georgian Technical University, 0160 Tbilisi, GeorgiaDepartment of Road Transport and Logistics, Faculty of Transportation and Mechanical Engineering, Georgian Technical University, 0160 Tbilisi, GeorgiaCycloidal reducers are widely used in precision drive systems due to their reduced backlash in meshing and compact design. However, their operational durability is limited by surface wear and lubricant degradation under elevated contact loads and boundary lubrication conditions. This study introduces a modified wear prediction model based on four-ball tribological testing, specifically adapted to simulate the complex tribological conditions in cycloidal gear contacts. The model incorporates the total acid number (TAN) and thermal conductivity coefficient of the lubricant as dimensionless factors, enabling a dynamic prediction of wear intensity as the lubrication degrades. This innovation allows an accurate estimation of service life and reliability in high-load, small-contact-area mechanical systems and offers a practical diagnostic tool for the predictive maintenance of gear transmissions.https://www.mdpi.com/2075-4442/13/6/268cycloidal reducerwear regularitylubricated surfaceoil acidityfriction torqueloading |
| spellingShingle | Juozas Padgurskas Oleksandr Dykha Raimundas Rukuiža Darius Volskis Rima Mickevičienė Giorgi Abramishvili Jumber Iosebidze Tribological Evaluation and Model of Wear Behavior in the Boundary Lubrication of the Contact Surfaces of Cycloidal Reducers cycloidal reducer wear regularity lubricated surface oil acidity friction torque loading |
| title | Tribological Evaluation and Model of Wear Behavior in the Boundary Lubrication of the Contact Surfaces of Cycloidal Reducers |
| title_full | Tribological Evaluation and Model of Wear Behavior in the Boundary Lubrication of the Contact Surfaces of Cycloidal Reducers |
| title_fullStr | Tribological Evaluation and Model of Wear Behavior in the Boundary Lubrication of the Contact Surfaces of Cycloidal Reducers |
| title_full_unstemmed | Tribological Evaluation and Model of Wear Behavior in the Boundary Lubrication of the Contact Surfaces of Cycloidal Reducers |
| title_short | Tribological Evaluation and Model of Wear Behavior in the Boundary Lubrication of the Contact Surfaces of Cycloidal Reducers |
| title_sort | tribological evaluation and model of wear behavior in the boundary lubrication of the contact surfaces of cycloidal reducers |
| topic | cycloidal reducer wear regularity lubricated surface oil acidity friction torque loading |
| url | https://www.mdpi.com/2075-4442/13/6/268 |
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