Test Analysis of Friction Moment between Ball and Cage of Miniature Bearing at Very Low Speed

Shao Na Jiang; Xiao Yang Chen; Jia Ming Gu; Song Sheng Li

doi:10.4028/www.scientific.net/AMR.139-141.2691

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 139-141Test Analysis of Friction Moment between Ball and...

Test Analysis of Friction Moment between Ball and Cage of Miniature Bearing at Very Low Speed

Abstract:

In some applications, especially for the attitude control of navigation system, the friction moment of instrument ball bearings is one of the much more important factors. Its magnitude and fluctuation affect not only the energy transfer but also the accuracy of signal transfer even though the bearings work at very low speed. Experimental analysis showed that the cage rotated with a minor fluctuation along its orbital axis and even this minor fluctuation could also make a great contribution to the moment for the ball bearing. A simplified model of deformation within the contact of ball and cage was built to deduce the contact time. Combined with the experimental results, the angular acceleration were obtained by the model of contact, then the value of moment due to sliding, which induced the fluctuation of cage, between ball and ribbon cage pockets of miniature bearing were obtained.

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Periodical:

Advanced Materials Research (Volumes 139-141)

Pages:

2691-2695

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.139-141.2691

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Online since:

October 2010

Authors:

Shao Na Jiang, Xiao Yang Chen, Jia Ming Gu, Song Sheng Li

Keywords:

Friction Moment, Instrument Ball Bearings, Low-Speed, Ribbon Cage

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