美国马歇尔宇宙飞行中心使用了一种新的能自动润滑的滚珠轴承。其滚珠隔离圈上的滚珠承窝在周向制造得略大,然后把以二硫化钼和聚四氟乙烯固体润滑剂为主体材料所制成的垫片压进两个相邻滚珠承窝的延伸部分。垫片支承面对着隔离圈的内表面,而每 The United States Marshall Space Flight Center uses a new self-lubricating ball bearings. The ball cage on the ball cage is made slightly larger in the circumferential direction, and then a gasket made of molybdenum disulfide and polytetrafluoroethylene solid lubricant as the main material is pressed into two adjacent ball sockets Extension. Shim supports face the inner surface of the cage, and each