l66 J Fail. Anal and Preven.(2011)11: 158-16 probably the simplest approach for ensuring a bearing S, Hayano, M: Deterioration of lithium soap greas running under a well-lubricated condition all the time ctional life in ball bearings. NLGI Spokesm. 53, 246-251 8. Cann, P. M. Doner, J. P. Webster. M. N. wickstrom, V: Grease Acknowledgments This investigation was supported by Shanghai degradation in rolling element bearings. STLE Trans. 44, 399- Leading Academic Discipline Project, Project Number B113. The 404(2001)(in English) support is gratefully acknowledged. 9. Cann, P. M. Grease degradation in a bearing simulation device. Trib. Int 39, 1698-1706(2006)(in english 10. Komatsuzaki, S, Uematsu, T, Kobayashi, Y: Change of grease characteristics to the end of lubricating life. NLGI Spokesm. 63 References 22-27(2000)(in English) I1. Fernandes. P.J. L. Mcduling. C: Surface contact fatigue failures 1.zhou,ZX∴滚动轴承常见失效形式分析与正确维护( Common in gears. Eng. Fail. Anal. 4(2), 99-107(1997)(in English) failure type analysis of rolling bearing and its correct mainte- 12. ASM Metals Handbook, Failure of Rolling-Element Bearings, nance). Constr. Mach. 9, 67-71(2003)(in Chinese) Vol. ll, Failure Analysis and Prevention, 9th edn. American 2. Li, YJ, Tao, C H, Zhang, W.F., et al. Fracture analysis on cage ng. Eng. Fail. Anal. 15(6), 79 -Delisi for Metals, Metals Park, OH, pp. 490-513(1986)(in 13.Xie,F,Yu,YP,Yao,JB:脂的氧化与抑制( Oxidation of 3. Fernandes, PJ. L: Contact fatigue in rolling-element bearings grease and its inhibition). Synth. Lubr. 30(3), 49-52(2003)(in Eng. Fail. Anal.(4), 155-160( 1997)(in English) 4.Yang,WQ,Chen,YZ:减少电动机滚动轴承故障的途径14.xue,J, Zhang,JY.,Wang,C. 谱技术在轴承润滑脂 (Methods for reducing the faults in rolling contact bearing of motor). 分析上的应用( Application of spectrum technique Explos. Proof Electr. Mach. 40(2), 28-30(2005)(in Chine ng grease 7,25-29(2003)(in 5. Carre, D.J., Bauer, R, Fleischauer, P D: Chemical analysis of from spin-bearing tests. ASLE Trans. 26, 15. Eichler, J W, Matthews, A, Leyland, A, et aL. The influence of 475-480( coatings on the oil-out performance of rolling bearings. Surf. 6. Tomaru T. Ito. H. Suzuki. T: Grease-life estima- oat. Technol. 202, 1073-1077(2007) (in English) tion and rioration in sealed ball bearings. In: Proc. 16. Berthier, Y, Vincent, L, Godet, M. Fretting fatigue and fretting JSLE Int. Trib. Conf, 1985, pp. 1039-1044(in English) wear. Trib. Int. 22, 235-242(1989)(in English)probably the simplest approach for ensuring a bearing running under a well-lubricated condition all the time. Acknowledgments This investigation was supported by Shanghai Leading Academic Discipline Project, Project Number B113. The support is gratefully acknowledged. References 1. Zhou, Z.X.: 滚动轴承常见失效形式分析与正确维护 (Common failure type analysis of rolling bearing and its correct mainte￾nance). Constr. Mach. 9, 67–71 (2003) (in Chinese) 2. Li, Y.J., Tao, C.H., Zhang, W.F., et al.: Fracture analysis on cage rivets of a cylindrical roller bearing. Eng. Fail. Anal. 15(6), 796– 801 (2008) (in English) 3. Fernandes, P.J.L.: Contact fatigue in rolling-element bearings. Eng. Fail. Anal. (4), 155–160 (1997) (in English) 4. Yang, W.Q., Chen, Y.Z.: 减少电动机滚动轴承故障的途径 (Methods for reducing the faults in rolling contact bearing of motor). Explos. Proof Electr. Mach. 40(2), 28–30 (2005) (in Chinese) 5. Carre´, D.J., Bauer, R., Fleischauer, P.D.: Chemical analysis of hydrocarbon grease from spin-bearing tests. ASLE Trans. 26, 475–480 (1983) (in English) 6. Tomaru, M., Suzuki, T., Ito, H., Suzuki, T.: Grease-life estima￾tion and grease deterioration in sealed ball bearings. In: Proc. JSLE Int. Trib. Conf., 1985, pp. 1039–1044 (in English) 7. Hosoya, S., Hayano, M.: Deterioration of lithium soap greases and functional life in ball bearings. NLGI Spokesm. 53, 246–251 (1989) (in English) 8. 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