Flexible thin-walled bearing life testing machine and data analysis.

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Title: Flexible thin-walled bearing life testing machine and data analysis.
Authors: Li, Zhen1 (AUTHOR) scutlz@163.com, Miao, Zhuang1 (AUTHOR), Xu, Xiaoguo1 (AUTHOR), Zhu, Shuliang1 (AUTHOR)
Source: Journal of Vibration & Control. May2026, Vol. 32 Issue 9/10, p2616-2631. 16p.
Subjects: Fatigue testing machines, Fault diagnosis, Mechanical vibration research, Fatigue life, Bearing steel, Harmonic drives
Abstract: In a harmonic reducer, the precision flexible thin-walled bearing (FTB), which is the core component, achieves the high reduction ratio requirement through its elastic deformation. The lifespan of a harmonic reducer mainly depends on this FTB. The special load conditions make it easy for the inner and outer rings, as well as the rolling elements, to suffer damage. The outer ring is especially prone to fatigue failure. Therefore, analyzing the dynamic response and fatigue life of FTBs under complex operating conditions is crucial for ensuring their reliability and durability. This paper designs a vibration-based fault diagnosis and lifespan testing machine to study the load conditions and kinematic characteristics of FTB in harmonic reducers. We derive a model for solving the fault characteristic frequencies of the inner and outer rings and rolling elements of FTB with elliptical characteristics. The results show that the fault characteristic frequencies of FTB vary within a range, whereas those of conventional bearings are fixed values. Additionally, normal FTBs contain periodic impact components in their vibration signals. In contrast, conventional bearings only produce such periodic impacts when damaged. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Vibration & Control is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Flexible thin-walled bearing life testing machine and data analysis.
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  Data: <searchLink fieldCode="AR" term="%22Li%2C+Zhen%22">Li, Zhen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> scutlz@163.com</i><br /><searchLink fieldCode="AR" term="%22Miao%2C+Zhuang%22">Miao, Zhuang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Xiaoguo%22">Xu, Xiaoguo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Shuliang%22">Zhu, Shuliang</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Vibration+%26+Control%22">Journal of Vibration & Control</searchLink>. May2026, Vol. 32 Issue 9/10, p2616-2631. 16p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Fatigue+testing+machines%22">Fatigue testing machines</searchLink><br /><searchLink fieldCode="DE" term="%22Fault+diagnosis%22">Fault diagnosis</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+vibration+research%22">Mechanical vibration research</searchLink><br /><searchLink fieldCode="DE" term="%22Fatigue+life%22">Fatigue life</searchLink><br /><searchLink fieldCode="DE" term="%22Bearing+steel%22">Bearing steel</searchLink><br /><searchLink fieldCode="DE" term="%22Harmonic+drives%22">Harmonic drives</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In a harmonic reducer, the precision flexible thin-walled bearing (FTB), which is the core component, achieves the high reduction ratio requirement through its elastic deformation. The lifespan of a harmonic reducer mainly depends on this FTB. The special load conditions make it easy for the inner and outer rings, as well as the rolling elements, to suffer damage. The outer ring is especially prone to fatigue failure. Therefore, analyzing the dynamic response and fatigue life of FTBs under complex operating conditions is crucial for ensuring their reliability and durability. This paper designs a vibration-based fault diagnosis and lifespan testing machine to study the load conditions and kinematic characteristics of FTB in harmonic reducers. We derive a model for solving the fault characteristic frequencies of the inner and outer rings and rolling elements of FTB with elliptical characteristics. The results show that the fault characteristic frequencies of FTB vary within a range, whereas those of conventional bearings are fixed values. Additionally, normal FTBs contain periodic impact components in their vibration signals. In contrast, conventional bearings only produce such periodic impacts when damaged. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Vibration & Control is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1177/10775463251333837
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 16
        StartPage: 2616
    Subjects:
      – SubjectFull: Fatigue testing machines
        Type: general
      – SubjectFull: Fault diagnosis
        Type: general
      – SubjectFull: Mechanical vibration research
        Type: general
      – SubjectFull: Fatigue life
        Type: general
      – SubjectFull: Bearing steel
        Type: general
      – SubjectFull: Harmonic drives
        Type: general
    Titles:
      – TitleFull: Flexible thin-walled bearing life testing machine and data analysis.
        Type: main
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          Name:
            NameFull: Li, Zhen
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            NameFull: Miao, Zhuang
      – PersonEntity:
          Name:
            NameFull: Xu, Xiaoguo
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          Name:
            NameFull: Zhu, Shuliang
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          Dates:
            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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            – Type: issn-print
              Value: 10775463
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              Value: 32
            – Type: issue
              Value: 9/10
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            – TitleFull: Journal of Vibration & Control
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