International Journal of Precision Engineering and Manufacturing
- Volume 1 Issue 1
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- Pages.42-48
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- 2000
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- 2234-7593(pISSN)
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- 2005-4602(eISSN)
Friction Analysis of Spindle Bearings
- Chang, Hun-Keun (Graduate School of Mechanical and Aerospace) ;
- Young Sun (Samsung Electronics Co. Ltd., Seoul, South Korea) ;
- Han, Dong-Chul (School of Mechanical and Aerospace Engineering, Seoul Nat'l University, Seoul, South Korea)
- Published : 2000.06.01
Abstract
Friction in bearing exerts an important effect upon power dissipation and heat generation of spindle system. This paper presents frictional moments derived from rotational axis coordinate system of spindle and frictional characteristics to spindle speed A frictional moment of spindle bearings is derived by work-energy method. Differential sliding moments in outer raceway has a major effect upon frictional resistance; spin sliding moments in inner raceway has a secondary effect. As spindle speed increases, also the frictional moments increase. In high-speed region, ceramic ball bearing 몬 smaller frictional moment than steel ball bearing.