公开(公告)号：US09500231B2

公开(公告)日：2016-11-22

申请号：US13630602

申请日：2012-09-28

申请人： WILLIAMS INTERNATIONAL CO., L. L. C.

发明人： Gregg G. Williams ,  Craig R. Miller

IPC分类号： F16C33/60 ,  F16C33/62 ,  F16C33/66 ,  F16C33/32 ,  F16C33/78

CPC分类号： F16C33/62 ,  F16C21/00 ,  F16C33/32 ,  F16C33/60 ,  F16C33/6659 ,  F16C33/7886 ,  F16C2206/40 ,  F16C2240/84 ,  F16C2360/24

摘要： A turbocharger ball-bearing assembly incorporates a cageless set of ceramic bearing balls operating within outer and inner bearing raceways, wherein the outer bearing raceway is on the inside of a fractured outer race. The fractured outer race is located in a counterbore of a center body of a turbocharger. The center body, in cooperation with the ball-bearing assembly, provides for rotationally supporting, and axially restraining, a rotor shaft of the turbocharger. The outside diameter of the fractured outer bearing race is less than a corresponding inside diameter of the counterbore, and the center body provides for supplying lubricant to an isolation annulus therebetween, so as to provide fir squeeze-film damping the ball-bearing assembly within the counterbore.

摘要翻译： 涡轮增压器滚珠轴承组件包括在外部和内部轴承滚道内操作的无笼架的陶瓷轴承滚珠组，其中外部轴承滚道位于断裂的外圈的内侧。 断裂的外圈位于涡轮增压器的中心体的沉孔中。 与滚珠轴承组件配合的中心体提供涡轮增压器的转子轴的旋转支撑和轴向限制。 断裂的外轴承座的外径小于沉孔的相应内径，中心体为其间的隔离环提供润滑剂，以便将滚珠轴承组件的冷挤压膜阻尼在内 沉孔