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首页> 外文会议>American Society of Mechanical Engineers(ASME)/Society of Tribologists and Lubrication Engineers(STLE) International Joint Tribology Conference 2004(IJTC 2004) vol.1 pt.A; 20041024-27; Long Beach,CA(US) >EFFECT OF SILICON NITRIDE BALLS AND ROLLERS ON ROLLING BEARING LIFE
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EFFECT OF SILICON NITRIDE BALLS AND ROLLERS ON ROLLING BEARING LIFE

机译：氮化硅球和轧辊对滚动轴承寿命的影响

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摘要

Three decades have passed since the introduction of silicon nitride rollers and balls into conventional rolling-element bearings. For a given applied load, the contact (Hertz) stress in a hybrid bearing will be higher than an all-steel rolling-element bearing. The silicon nitride rolling-element life as well as the lives of the steel races were used to determine the resultant bearing life of both hybrid and all-steel bearings. Life factors were determined and reported for hybrid bearings. Under nominal operating speeds, the resultant calculated lives for deep-groove, angular-contact, and cylindrical-roller hybrid bearings are respectively, 3.8, 3.3, and 5.5 times that using the Lundberg-Palmgren equations. An all-steel bearing under the same load and nominal operating speeds will always have a higher life than the equivalent hybrid bearing operating under the same conditions. Under these conditions, hybrid bearings are predicted to have a lower fatigue life than the all-steel bearings by 58 percent for deep-groove bearings, 41 percent for angular-contact bearings and 28 percent for cylindrical roller bearings.
机译：自从将氮化硅辊和球引入常规滚动轴承以来已经过去了三十年。对于给定的施加载荷，混合轴承中的接触（赫兹）应力将高于全钢滚动轴承。使用氮化硅滚动体寿命以及钢圈的寿命来确定混合轴承和全钢轴承的最终轴承寿命。确定并报告了混合轴承的寿命因素。在额定转速下，深沟，角接触和圆柱滚子混合轴承的计算寿命分别是使用Lundberg-Palmgren方程的3.8倍，3.3倍和5.5倍。与在相同条件下运行的等效混合轴承相比，在相同负载和额定运行速度下的全钢轴承始终具有更高的寿命。在这种情况下，预计混合轴承的疲劳寿命比全钢轴承低58％（深沟轴承），41％（角接触轴承）和28％（圆柱滚子轴承）。

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