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Improved formulation for running torque in angular contact ball bearings

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Abstract

This paper presents an improved computational model for the angular contact ball bearing (ACBB) running torque. Considering the general loading condition, the friction torque formula of individual bearing balls was derived. Five friction components were considered: elastohydrodynamic lubrication (EHL) rolling resistance, elastic hysteresis friction, differential sliding loss, spinning friction, and lubricant viscous drag effect. The formulas for elastohydrodynamic lubrication rolling resistance and spinning friction, which contribute significantly to the ACBB running torque, were improved by investigating and re-formulating the contact related formulas. The friction coefficient between the ball and races was investigated in order to choose a suitable and reliable formula for the proposed model. The proposed model was verified through a comparison with formulas provided by a bearing manufacturer and with a set of experimental data.

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Authors and Affiliations

  1. Department of Mechanical System Engineering, Kumoh National Institute of Technology, 61, Daehak-ro, Gumi-si, Gyeongsangbuk-do, 39177, Republic of Korea

    Van-Canh Tong & Seong-Wook Hong

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  1. Van-Canh Tong
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  2. Seong-Wook Hong
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Correspondence to Seong-Wook Hong.

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Tong, VC., Hong, SW. Improved formulation for running torque in angular contact ball bearings. Int. J. Precis. Eng. Manuf. 19, 47–56 (2018). https://doi.org/10.1007/s12541-018-0006-2

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  • DOI: https://doi.org/10.1007/s12541-018-0006-2

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