Effect of Grease Viscosity on Channeling Properties of Ball Bearings
Grease-lubricated rolling bearings transition from the churning phase to the channeling phase. This transition property affects grease life and torque properties. Therefore, the relationship between grease yield stress and grease degradation during operation, which affects this transition, has been...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/12/1/13 |
| _version_ | 1797339640074600448 |
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| author | Tomohiko Obata Hiroki Fujiwara Fumihiro Itoigawa Satoru Maegawa |
| author_facet | Tomohiko Obata Hiroki Fujiwara Fumihiro Itoigawa Satoru Maegawa |
| author_sort | Tomohiko Obata |
| collection | DOAJ |
| description | Grease-lubricated rolling bearings transition from the churning phase to the channeling phase. This transition property affects grease life and torque properties. Therefore, the relationship between grease yield stress and grease degradation during operation, which affects this transition, has been investigated. However, there have been few studies on grease flow that affects the transition. In this study, the mechanism of grease reduction on the races was investigated for small bearings operated at low speeds, where thermal degradation and softening of the grease are less likely to occur. It was inferred that the grease transfer to the cage affects the channeling transition and that the amount of transfer varies depending on the initial grease viscosity. These findings can be applied to grease composition and cage design and are useful in providing bearings with excellent low-torque characteristics, such as in industrial motor applications. |
| first_indexed | 2024-03-08T09:51:15Z |
| format | Article |
| id | doaj.art-c17a143f23ef46eba4e88d97dc25817b |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-08T09:51:15Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-c17a143f23ef46eba4e88d97dc25817b2024-01-29T14:04:16ZengMDPI AGLubricants2075-44422024-01-011211310.3390/lubricants12010013Effect of Grease Viscosity on Channeling Properties of Ball BearingsTomohiko Obata0Hiroki Fujiwara1Fumihiro Itoigawa2Satoru Maegawa3Advanced Technology R&D Center, NTN Corporation, 5-105, Hidamarinooka, Kuwana 511-0867, JapanCAE R&D Center, NTN Corporation, 1578, Higashikaizuka, Iwata 438-0851, JapanDepartment of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Gokisochou, Nagoya 466-8555, JapanDepartment of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Gokisochou, Nagoya 466-8555, JapanGrease-lubricated rolling bearings transition from the churning phase to the channeling phase. This transition property affects grease life and torque properties. Therefore, the relationship between grease yield stress and grease degradation during operation, which affects this transition, has been investigated. However, there have been few studies on grease flow that affects the transition. In this study, the mechanism of grease reduction on the races was investigated for small bearings operated at low speeds, where thermal degradation and softening of the grease are less likely to occur. It was inferred that the grease transfer to the cage affects the channeling transition and that the amount of transfer varies depending on the initial grease viscosity. These findings can be applied to grease composition and cage design and are useful in providing bearings with excellent low-torque characteristics, such as in industrial motor applications.https://www.mdpi.com/2075-4442/12/1/13channelinggrease viscosityball bearinggrease flow |
| spellingShingle | Tomohiko Obata Hiroki Fujiwara Fumihiro Itoigawa Satoru Maegawa Effect of Grease Viscosity on Channeling Properties of Ball Bearings Lubricants channeling grease viscosity ball bearing grease flow |
| title | Effect of Grease Viscosity on Channeling Properties of Ball Bearings |
| title_full | Effect of Grease Viscosity on Channeling Properties of Ball Bearings |
| title_fullStr | Effect of Grease Viscosity on Channeling Properties of Ball Bearings |
| title_full_unstemmed | Effect of Grease Viscosity on Channeling Properties of Ball Bearings |
| title_short | Effect of Grease Viscosity on Channeling Properties of Ball Bearings |
| title_sort | effect of grease viscosity on channeling properties of ball bearings |
| topic | channeling grease viscosity ball bearing grease flow |
| url | https://www.mdpi.com/2075-4442/12/1/13 |
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