Shinji Oouchi and  Hajime Nomura and  Kung-Da Wu and  Yong-Run Chen and  Jui-Pin Hung,  Variation of the Dynamic Characteristics of a Spindle with the Change of Bearing Preload.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
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    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9999491.