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客车滚动轴承轴箱密封改造工作已在全路铺开,这对提高轴箱的密封性能,保证旅客列车的绝对安全,发挥了积极作用。目前,轮箱密封改造用防尘挡圈都是按防尘板座原型尺寸配制,而车轴上防尘板座在轮对检修时往往都要进行加修。(84)铁辆字308号文公布的铁路客车段修规程中规定,RC_3、RC_4车轴防尘板座直径检修限度为143mm以上,RD_3、RD_4车轴防尘板座直径检修限度为
Passenger rolling bearing axle box sealing transformation has been rolled out in the whole road, which improves the sealing performance of the axle box to ensure the absolute safety of passenger trains, has played an active role. At present, the wheel box seal with dust-proof seal ring are modified according to the prototype dustproof seat size preparation, and the dust-proof axle seat on the wheel overhaul often have to repair. (84) According to the railway passenger car repair code published by CRC No. 308, the overhaul limit of RC_3 and RC_4 axle dust plate holders is 143mm or more. The inspection and maintenance limits of the diameter of RD_3 and RD_4 axle dust plate holders are