目前,带有旋转端盖的铁路滚子轴承使用美国铁路协会标准M—917—64的B级脂,每隔48个月就要换一次脂。在使用维修中发现,油脂过多会过热,从而造成轴承损坏数量的增加;同时,维修中还发现,润滑期还可延长至四年以上。有些B级脂不够稳定,这对润滑期不利。由于在所推荐的美国铁路协会M—942规格中,把模拟使用条件的机械稳定性试验作为一项要求,所以,不稳定问题可以解决。 Currently, roller bearings with a rotating end cap use Class B grease from American Railroad Association Standard M-917-64, changing grease every 48 months. In the use of maintenance found that too much oil will overheat, resulting in an increase in the number of bearing damage; the same time, maintenance and found that the lubrication period can be extended to more than four years. Some Class B lipids are not stable enough, which is not good for lubrication. As a result of the proposed American Railway Society M-942 specification, a mechanical stability test simulating conditions of use was taken as a requirement, the problem of instability could be solved.