A double row 4-point-contact slewing bearing is usually applied with strict requirements for reliability. The load distribution over raceways is the fundament to calculate both the static and dynamic bearing capability of a slewing bearing. The paper discussed a method for calculating the load distribution in a double row 4-point-contact slewing bearing under general load conditions ( turnover moment, axial load and radial load). Based on the method, some suggestions were proposed for optimization of the slewing bearing design. The method was applied to solve the contact load and stress distribution over raceways of a pitch slewing bearing in a wind power turbine as an example.%双排四点接触转盘轴承通常用于可靠性要求较高的大型机械中,其主要功能是连接2个需要相对回转的大型零部件.静/动承载能力是选择或者设计转盘轴承的基础,滚道接触压力分布规律则是研究转盘轴承静/动承载能力的前提.讨论了一种求解双排四点接触球转盘轴承在任意方向和大小外载条件下滚道载荷分布情况的方法,这种方法综合考虑了转盘轴承的截面间隙、滚珠直径、初始接触角、滚道/滚珠曲率半径比等各种几何参数,适用于优化设计双排四点接触球转盘轴承,以某型号风电变桨转盘轴承为例,运用该方法求解了转盘轴承滚道的接触压力分布.
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