外圈具有双挡边,保持架为M形并采用外引导方式的滚针轴承,滚针应在窗孔中部被窗梁锁住,为防止其掉出,滚针应被窗孔两端窗梁所引导,并且窗孔两端引导面与滚针的接触点和滚针圆的连线应垂直于滚针圆心和滚针中心圆圆心的连线。要实现上述要求,保持架外径的设计应合理,窗孔中部窗梁擦针现象必须进行校核。 Outer ring with double ribs, the cage is M-shaped and outer guide needle roller bearings, needle roller window should be locked in the middle of the window beam, in order to prevent it from falling out, needle roller window should be both ends of the window Beam guidance, and both ends of the window guide surface and the needle contact point and the needle round the line should be perpendicular to the center needle roller needle and the circle center of the center line connection. To achieve the above requirements, the outer diameter of the cage design should be reasonable, window window wipe the phenomenon of the needle must be checked.